Merge pull request #67 from jetzig-framework/http.zig-and-misc-optimizations

Switch to http.zig

README.md

@@ -2,8 +2,6 @@
 
 _Jetzig_ is a web framework written in 100% pure [Zig](https://ziglang.org) :lizard: for _Linux_, _OS X_, _Windows_, and any _OS_ that can compile _Zig_ code.
 
-The framework is under active development and is currently in an alpha state.
-
 Official website: [jetzig.dev](https://www.jetzig.dev/)
 
 _Jetzig_ aims to provide a rich set of user-friendly tools for building modern web applications quickly. See the checklist below.
@@ -13,7 +11,7 @@ Join us on Discord ! [https://discord.gg/eufqssz7X6](https://discord.gg/eufqssz7
 If you are interested in _Jetzig_ you will probably find these tools interesting too:
 
 * [Zap](https://github.com/zigzap/zap)
-* [http.zig](https://github.com/karlseguin/http.zig)
+* [http.zig](https://github.com/karlseguin/http.zig) (_Jetzig_'s backend)
 * [tokamak](https://github.com/cztomsik/tokamak)
 * [zig-router](https://github.com/Cloudef/zig-router)
 * [zig-webui](https://github.com/webui-dev/zig-webui/)

build.zig

@@ -57,6 +57,7 @@ pub fn build(b: *std.Build) !void {
 
     const jetkv_dep = b.dependency("jetkv", .{ .target = target, .optimize = optimize });
     const zmd_dep = b.dependency("zmd", .{ .target = target, .optimize = optimize });
+    const httpz_dep = b.dependency("httpz", .{ .target = target, .optimize = optimize });
 
     // This is the way to make it look nice in the zig build script
     // If we would do it the other way around, we would have to do
@@ -75,6 +76,7 @@ pub fn build(b: *std.Build) !void {
     jetzig_module.addImport("zmd", zmd_dep.module("zmd"));
     jetzig_module.addImport("jetkv", jetkv_dep.module("jetkv"));
     jetzig_module.addImport("smtp", smtp_client_dep.module("smtp_client"));
+    jetzig_module.addImport("httpz", httpz_dep.module("httpz"));
 
     const main_tests = b.addTest(.{
         .root_source_file = .{ .path = "src/tests.zig" },
@@ -93,6 +95,7 @@ pub fn build(b: *std.Build) !void {
 
     main_tests.root_module.addImport("zmpl", zmpl_dep.module("zmpl"));
     main_tests.root_module.addImport("jetkv", jetkv_dep.module("jetkv"));
+    main_tests.root_module.addImport("httpz", httpz_dep.module("httpz"));
     const run_main_tests = b.addRunArtifact(main_tests);
 
     const test_step = b.step("test", "Run library tests");

build.zig.zon

@@ -7,20 +7,24 @@
             .hash = "1220482f07f2bbaef335f20d6890c15a1e14739950b784232bc69182423520e058a5",
         },
         .zmpl = .{
-            .url = "https://github.com/jetzig-framework/zmpl/archive/c14683521ca48c1de0a9b2d61dfb145e1bc4dac1.tar.gz",
+            .url = "https://github.com/jetzig-framework/zmpl/archive/ef04bf3579e176f9fa3a02effc4ffcbbb5d080d8.tar.gz",
-            .hash = "122093b741ef4aff151e916fc6005cb0c2aed747a34b77c0d4b45099ea2b561df9c7",
+            .hash = "12209bd490ef2c841d607a6260be9cc40e20dc76786cb99d0fcd72cfef4a253a840d",
         },
         .jetkv = .{
-            .url = "https://github.com/jetzig-framework/jetkv/archive/50016e13c89e86c89b7f7ae93d4f0a31d3be303b.tar.gz",
+            .url = "https://github.com/jetzig-framework/jetkv/archive/6fc375b1ece563ae6d16849bb7c0441ff2883a04.tar.gz",
-            .hash = "122090b828d2cdd4915d242cb3761fe9142b145e49a2341f8b29343839945d6ab256",
+            .hash = "122079edca9ea46ebb5ce8f05ea2c58ee957cf2d73fcfd9a0fd6a50f65879f3bf88f",
         },
         .args = .{
             .url = "https://github.com/MasterQ32/zig-args/archive/01d72b9a0128c474aeeb9019edd48605fa6d95f7.tar.gz",
             .hash = "12208a1de366740d11de525db7289345949f5fd46527db3f89eecc7bb49b012c0732",
         },
         .smtp_client = .{
-            .url = "https://github.com/bobf/smtp_client.zig/archive/86315adf5527e6add304fea3f1ff110613126283.tar.gz",
+            .url = "https://github.com/karlseguin/smtp_client.zig/archive/964152ad4e19dc1d22f6def6f659c86df60e7832.tar.gz",
-            .hash = "12203ccdd3f7145f305c6f88b18ecd407d27b36051a523f8f579f0099db6a17cd757",
+            .hash = "1220d4f1c2472769b0d689ea878f41f0a66cb07f28569a138aea2c0a648a5c90dd4e",
+        },
+        .httpz = .{
+            .url = "https://github.com/karlseguin/http.zig/archive/34f1aa8a1486478414e876f65364a501d73c8a76.tar.gz",
+            .hash = "12205404dd8bdd98c659e844385154eb28116c1be073103fc94739bc99fa912323e8",
         },
     },
 

demo/src/app/middleware/DemoMiddleware.zig

@@ -20,11 +20,11 @@ const jetzig = @import("jetzig");
 /// can also be modified.
 my_custom_value: []const u8,
 
-const Self = @This();
+const DemoMiddleware = @This();
 
 /// Initialize middleware.
-pub fn init(request: *jetzig.http.Request) !*Self {
+pub fn init(request: *jetzig.http.Request) !*DemoMiddleware {
-    var middleware = try request.allocator.create(Self);
+    var middleware = try request.allocator.create(DemoMiddleware);
     middleware.my_custom_value = "initial value";
     return middleware;
 }
@@ -32,7 +32,7 @@ pub fn init(request: *jetzig.http.Request) !*Self {
 /// Invoked immediately after the request is received but before it has started processing.
 /// Any calls to `request.render` or `request.redirect` will prevent further processing of the
 /// request, including any other middleware in the chain.
-pub fn afterRequest(self: *Self, request: *jetzig.http.Request) !void {
+pub fn afterRequest(self: *DemoMiddleware, request: *jetzig.http.Request) !void {
     try request.server.logger.DEBUG(
         "[DemoMiddleware:afterRequest] my_custom_value: {s}",
         .{self.my_custom_value},
@@ -42,7 +42,11 @@ pub fn afterRequest(self: *Self, request: *jetzig.http.Request) !void {
 
 /// Invoked immediately before the response renders to the client.
 /// The response can be modified here if needed.
-pub fn beforeResponse(self: *Self, request: *jetzig.http.Request, response: *jetzig.http.Response) !void {
+pub fn beforeResponse(
+    self: *DemoMiddleware,
+    request: *jetzig.http.Request,
+    response: *jetzig.http.Response,
+) !void {
     try request.server.logger.DEBUG(
         "[DemoMiddleware:beforeResponse] my_custom_value: {s}, response status: {s}",
         .{ self.my_custom_value, @tagName(response.status_code) },
@@ -51,7 +55,11 @@ pub fn beforeResponse(self: *Self, request: *jetzig.http.Request, response: *jet
 
 /// Invoked immediately after the response has been finalized and sent to the client.
 /// Response data can be accessed for logging, but any modifications will have no impact.
-pub fn afterResponse(self: *Self, request: *jetzig.http.Request, response: *jetzig.http.Response) !void {
+pub fn afterResponse(
+    self: *DemoMiddleware,
+    request: *jetzig.http.Request,
+    response: *jetzig.http.Response,
+) !void {
     _ = self;
     _ = response;
     try request.server.logger.DEBUG("[DemoMiddleware:afterResponse] response completed", .{});
@@ -60,6 +68,6 @@ pub fn afterResponse(self: *Self, request: *jetzig.http.Request, response: *jetz
 /// Invoked after `afterResponse` is called. Use this function to do any clean-up.
 /// Note that `request.allocator` is an arena allocator, so any allocations are automatically
 /// freed before the next request starts processing.
-pub fn deinit(self: *Self, request: *jetzig.http.Request) void {
+pub fn deinit(self: *DemoMiddleware, request: *jetzig.http.Request) void {
     request.allocator.destroy(self);
 }

demo/src/app/views/basic.zig

@@ -0,0 +1,7 @@
+const std = @import("std");
+const jetzig = @import("jetzig");
+
+pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
+    _ = data;
+    return request.render(.ok);
+}

demo/src/app/views/basic/index.zmpl

@@ -0,0 +1,3 @@
+<div>
+  <span>Content goes here</span>
+</div>

demo/src/app/views/mail.zig

@@ -10,7 +10,7 @@ pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
     // * `src/app/mailers/welcome/html.zmpl`
     // * `src/app/mailers/welcome/text.zmpl`
     // All mailer templates have access to the same template data as a view template.
-    const mail = request.mail("welcome", .{ .to = &.{"hello.dev"} });
+    const mail = request.mail("welcome", .{ .to = &.{"hello@jetzig.dev"} });
 
     // Deliver the email asynchronously via a built-in mail Job. Use `.now` to send the email
     // synchronously (i.e. before the request has returned).

demo/src/app/views/redirect.zig

@@ -16,5 +16,6 @@ pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
         }
     }
 
+    try request.response.headers.append("foobar", "hello");
     return request.render(.ok);
 }

demo/src/app/views/session.zig

@@ -4,7 +4,9 @@ const jetzig = @import("jetzig");
 pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
     var root = try data.object();
 
-    if (try request.session.get("message")) |message| {
+    const session = try request.session();
+
+    if (try session.get("message")) |message| {
         try root.put("message", message);
     } else {
         try root.put("message", data.string("No message saved yet"));
@@ -16,9 +18,10 @@ pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
 pub fn post(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
     _ = data;
     const params = try request.params();
+    var session = try request.session();
 
     if (params.get("message")) |message| {
-        try request.session.put("message", message);
+        try session.put("message", message);
     }
 
     return request.redirect("/session", .moved_permanently);

demo/src/main.zig

@@ -15,7 +15,7 @@ pub const jetzig_options = struct {
         jetzig.middleware.HtmxMiddleware,
         // Demo middleware included with new projects. Remove once you are familiar with Jetzig's
         // middleware system.
-        @import("app/middleware/DemoMiddleware.zig"),
+        // @import("app/middleware/DemoMiddleware.zig"),
     };
 
     // Maximum bytes to allow in request body.
@@ -27,6 +27,22 @@ pub const jetzig_options = struct {
     // Maximum filesize for `static/` content (applies only to apps using `jetzig.http.StaticRequest`).
     // pub const max_bytes_static_content: usize = std.math.pow(usize, 2, 18);
 
+    // Maximum length of a header name. There is no limit imposed by the HTTP specification but
+    // AWS load balancers reference 40 as a limit so we use that as a baseline:
+    // https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_HttpHeaderConditionConfig.html
+    // This can be increased if needed.
+    // pub const max_bytes_header_name: u16 = 40;
+
+    // Log message buffer size. Log messages exceeding this size spill to heap with degraded
+    // performance. Log messages should aim to fit in the message buffer.
+    // pub const log_message_buffer_len: usize = 4096;
+
+    // Maximum log pool size. When a log buffer is no longer required it is returned to a pool
+    // for recycling. When logging i/o is slow, a high volume of requests will result in this
+    // pool growing. When the pool size reaches the maximum value defined here, log events are
+    // freed instead of recycled.
+    // pub const max_log_pool_len: usize = 256;
+
     // Path relative to cwd() to serve public content from. Symlinks are not followed.
     // pub const public_content_path = "public";
 

src/jetzig.zig

@@ -78,6 +78,22 @@ pub const config = struct {
     /// Maximum filesize for `static/` content (applies only to apps using `jetzig.http.StaticRequest`).
     pub const max_bytes_static_content: usize = std.math.pow(usize, 2, 18);
 
+    /// Maximum length of a header name. There is no limit imposed by the HTTP specification but
+    /// AWS load balancers reference 40 as a limit so we use that as a baseline:
+    /// https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_HttpHeaderConditionConfig.html
+    /// This can be increased if needed.
+    pub const max_bytes_header_name: u16 = 40;
+
+    /// Log message buffer size. Log messages exceeding this size spill to heap with degraded
+    /// performance. Log messages should aim to fit in the message buffer.
+    pub const log_message_buffer_len: usize = 4096;
+
+    /// Maximum log pool size. When a log buffer is no longer required it is returned to a pool
+    /// for recycling. When logging i/o is slow, a high volume of requests will result in this
+    /// pool growing. When the pool size reaches the maximum value defined here, log events are
+    /// freed instead of recycled.
+    pub const max_log_pool_len: usize = 256;
+
     /// Path relative to cwd() to serve public content from. Symlinks are not followed.
     pub const public_content_path = "public";
 

src/jetzig/App.zig

@@ -79,6 +79,13 @@ pub fn start(self: App, routes_module: type, options: AppOptions) !void {
     defer self.allocator.free(server_options.bind);
     defer self.allocator.free(server_options.secret);
 
+    var log_thread = try std.Thread.spawn(
+        .{ .allocator = self.allocator },
+        jetzig.loggers.LogQueue.Reader.publish,
+        .{ &server_options.log_queue.reader, .{} },
+    );
+    defer log_thread.join();
+
     if (server_options.detach) {
         const argv = try std.process.argsAlloc(self.allocator);
         defer std.process.argsFree(self.allocator, argv);
@@ -105,7 +112,6 @@ pub fn start(self: App, routes_module: type, options: AppOptions) !void {
         &job_queue,
         &cache,
     );
-    defer server.deinit();
 
     var mutex = std.Thread.Mutex{};
     var worker_pool = jetzig.jobs.Pool.init(

src/jetzig/Environment.zig

@@ -63,6 +63,13 @@ pub fn getServerOptions(self: Environment) !jetzig.http.Server.ServerOptions {
     const options = try args.parseForCurrentProcess(Options, self.allocator, .print);
     defer options.deinit();
 
+    const log_queue = try self.allocator.create(jetzig.loggers.LogQueue);
+    log_queue.* = jetzig.loggers.LogQueue.init(self.allocator);
+    try log_queue.setFiles(
+        try getLogFile(.stdout, options.options),
+        try getLogFile(.stderr, options.options),
+    );
+
     if (options.options.help) {
         const writer = std.io.getStdErr().writer();
         try args.printHelp(Options, options.executable_name orelse "<app-name>", writer);
@@ -76,16 +83,14 @@ pub fn getServerOptions(self: Environment) !jetzig.http.Server.ServerOptions {
             .development_logger = jetzig.loggers.DevelopmentLogger.init(
                 self.allocator,
                 resolveLogLevel(options.options.@"log-level", environment),
-                try getLogFile(.stdout, options.options),
+                log_queue,
-                try getLogFile(.stderr, options.options),
             ),
         },
         .json => jetzig.loggers.Logger{
             .json_logger = jetzig.loggers.JsonLogger.init(
                 self.allocator,
                 resolveLogLevel(options.options.@"log-level", environment),
-                try getLogFile(.stdout, options.options),
+                log_queue,
-                try getLogFile(.stderr, options.options),
             ),
         },
     };
@@ -111,6 +116,7 @@ pub fn getServerOptions(self: Environment) !jetzig.http.Server.ServerOptions {
         .port = options.options.port,
         .detach = options.options.detach,
         .environment = environment,
+        .log_queue = log_queue,
     };
 }
 

src/jetzig/colors.zig

@@ -4,38 +4,84 @@ const builtin = @import("builtin");
 
 const types = @import("types.zig");
 
+// Must be consistent with `std.io.tty.Color` for Windows compatibility.
 const codes = .{
-    .escape = "\x1B[",
+    .escape = "\x1b[",
-    .reset = "0;0",
+    .black = "30m",
-    .black = "0;30",
+    .red = "31m",
-    .red = "0;31",
+    .green = "32m",
-    .green = "0;32",
+    .yellow = "33m",
-    .yellow = "0;33",
+    .blue = "34m",
-    .blue = "0;34",
+    .magenta = "35m",
-    .purple = "0;35",
+    .cyan = "36m",
-    .cyan = "0;36",
+    .white = "37m",
-    .white = "0;37",
+    .bright_black = "90m",
+    .bright_red = "91m",
+    .bright_green = "92m",
+    .bright_yellow = "93m",
+    .bright_blue = "94m",
+    .bright_magenta = "95m",
+    .bright_cyan = "96m",
+    .bright_white = "97m",
+    .bold = "1m",
+    .dim = "2m",
+    .reset = "0m",
 };
 
-fn wrap(comptime attribute: []const u8, comptime message: []const u8) []const u8 {
+/// Map color codes generated by `std.io.tty.Config.setColor` back to `std.io.tty.Color`. Used by
-    if (builtin.os.tag == .windows) {
+/// `jetzig.loggers.LogQueue.writeWindows` to parse escape codes so they can be passed to
-        return message;
+/// `std.io.tty.Config.setColor` (using Windows API to set console color mode).
-    } else {
+pub const codes_map = std.StaticStringMap(std.io.tty.Color).initComptime(.{
-        return codes.escape ++ attribute ++ "m" ++ message ++ codes.escape ++ codes.reset ++ "m";
+    .{ "30", .black },
+    .{ "31", .red },
+    .{ "32", .green },
+    .{ "33", .yellow },
+    .{ "34", .blue },
+    .{ "35", .magenta },
+    .{ "36", .cyan },
+    .{ "37", .white },
+    .{ "90", .bright_black },
+    .{ "91", .bright_red },
+    .{ "92", .bright_green },
+    .{ "93", .bright_yellow },
+    .{ "94", .bright_blue },
+    .{ "95", .bright_magenta },
+    .{ "96", .bright_cyan },
+    .{ "97", .bright_white },
+    .{ "1", .bold },
+    .{ "2", .dim },
+    .{ "0", .reset },
+});
+
+/// Colorize a log message. Note that we force `.escape_codes` when we are a TTY even on Windows.
+/// `jetzig.loggers.LogQueue` parses the ANSI codes and uses `std.io.tty.Config.setColor` to
+/// invoke the appropriate Windows API call to set the terminal color before writing each token.
+/// We must do it this way because Windows colors are set by API calls at the time of write, not
+/// encoded into the message string.
+pub fn colorize(color: std.io.tty.Color, buf: []u8, input: []const u8, is_colorized: bool) ![]const u8 {
+    if (!is_colorized) return input;
+
+    const config: std.io.tty.Config = .escape_codes;
+    var stream = std.io.fixedBufferStream(buf);
+    const writer = stream.writer();
+    try config.setColor(writer, color);
+    try writer.writeAll(input);
+    try config.setColor(writer, .reset);
+
+    return stream.getWritten();
 }
+
+fn wrap(comptime attribute: []const u8, comptime message: []const u8) []const u8 {
+    return codes.escape ++ attribute ++ message ++ codes.escape ++ codes.reset;
 }
 
 fn runtimeWrap(allocator: std.mem.Allocator, attribute: []const u8, message: []const u8) ![]const u8 {
-    if (builtin.os.tag == .windows) {
-        return try allocator.dupe(u8, message);
-    } else {
     return try std.mem.join(
         allocator,
         "",
-            &[_][]const u8{ codes.escape, attribute, "m", message, codes.escape, codes.reset, "m" },
+        &[_][]const u8{ codes.escape, attribute, message, codes.escape, codes.reset },
     );
 }
-}
 
 pub fn black(comptime message: []const u8) []const u8 {
     return wrap(codes.black, message);
@@ -77,12 +123,12 @@ pub fn runtimeBlue(allocator: std.mem.Allocator, message: []const u8) ![]const u
     return try runtimeWrap(allocator, codes.blue, message);
 }
 
-pub fn purple(comptime message: []const u8) []const u8 {
+pub fn magenta(comptime message: []const u8) []const u8 {
-    return wrap(codes.purple, message);
+    return wrap(codes.magenta, message);
 }
 
-pub fn runtimePurple(allocator: std.mem.Allocator, message: []const u8) ![]const u8 {
+pub fn runtimeMagenta(allocator: std.mem.Allocator, message: []const u8) ![]const u8 {
-    return try runtimeWrap(allocator, codes.purple, message);
+    return try runtimeWrap(allocator, codes.magenta, message);
 }
 
 pub fn cyan(comptime message: []const u8) []const u8 {
@@ -101,15 +147,26 @@ pub fn runtimeWhite(allocator: std.mem.Allocator, message: []const u8) ![]const
     return try runtimeWrap(allocator, codes.white, message);
 }
 
-pub fn duration(allocator: std.mem.Allocator, delta: i64) ![]const u8 {
+pub fn duration(buf: *[256]u8, delta: i64, is_colorized: bool) ![]const u8 {
-    var buf: [1024]u8 = undefined;
+    if (!is_colorized) {
-    const formatted_duration = try std.fmt.bufPrint(&buf, "{}", .{std.fmt.fmtDurationSigned(delta)});
+        return try std.fmt.bufPrint(
+            buf,
+            "{}",
+            .{std.fmt.fmtDurationSigned(delta)},
+        );
+    }
 
-    if (delta < 1000000) {
+    const color: std.io.tty.Color = if (delta < 1000000)
-        return try runtimeGreen(allocator, formatted_duration);
+        .green
-    } else if (delta < 5000000) {
+    else if (delta < 5000000)
-        return try runtimeYellow(allocator, formatted_duration);
+        .yellow
-    } else {
+    else
-        return try runtimeRed(allocator, formatted_duration);
+        .red;
-    }
+    var duration_buf: [256]u8 = undefined;
+    const formatted_duration = try std.fmt.bufPrint(
+        &duration_buf,
+        "{}",
+        .{std.fmt.fmtDurationSigned(delta)},
+    );
+    return try colorize(color, buf, formatted_duration, true);
 }

src/jetzig/http.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const builtin = @import("builtin");
 
 pub const Server = @import("http/Server.zig");
 pub const Request = @import("http/Request.zig");

src/jetzig/http/Cookies.zig

@@ -6,6 +6,7 @@ allocator: std.mem.Allocator,
 cookie_string: []const u8,
 buf: std.ArrayList(u8),
 cookies: std.StringArrayHashMap(*Cookie),
+modified: bool = false,
 
 const Self = @This();
 
@@ -38,6 +39,8 @@ pub fn get(self: *Self, key: []const u8) ?*Cookie {
 }
 
 pub fn put(self: *Self, key: []const u8, value: Cookie) !void {
+    self.modified = true;
+
     if (self.cookies.fetchSwapRemove(key)) |entry| {
         self.allocator.free(entry.key);
         self.allocator.free(entry.value.value);

src/jetzig/http/Headers.zig

@@ -1,120 +1,102 @@
 const std = @import("std");
+
+const httpz = @import("httpz");
+
 const jetzig = @import("../../jetzig.zig");
 
 allocator: std.mem.Allocator,
-headers: HeadersArray,
+httpz_headers: *httpz.key_value.KeyValue,
+new_headers: std.ArrayList(Header),
 
 const Headers = @This();
-pub const max_headers = 25;
+const Header = struct { name: []const u8, value: []const u8 };
-const HeadersArray = std.ArrayListUnmanaged(std.http.Header);
+const max_bytes_header_name = jetzig.config.get(u8, "max_bytes_header_name");
 
-pub fn init(allocator: std.mem.Allocator) Headers {
+pub fn init(allocator: std.mem.Allocator, httpz_headers: *httpz.key_value.KeyValue) Headers {
     return .{
         .allocator = allocator,
-        .headers = HeadersArray.initCapacity(allocator, max_headers) catch @panic("OOM"),
+        .httpz_headers = httpz_headers,
+        .new_headers = std.ArrayList(Header).init(allocator),
     };
 }
 
 pub fn deinit(self: *Headers) void {
-    self.headers.deinit(self.allocator);
+    self.httpz_headers.deinit(self.allocator);
+
+    for (self.new_headers.items) |header| {
+        self.allocator.free(header.name);
+        self.allocator.free(header.value);
     }
 
-/// Gets the first value for a given header identified by `name`. Names are case insensitive.
+    self.new_headers.deinit();
+}
+
+/// Get the first value for a given header identified by `name`. Names are case insensitive.
 pub fn get(self: Headers, name: []const u8) ?[]const u8 {
-    for (self.headers.items) |header| {
+    std.debug.assert(name.len <= max_bytes_header_name);
-        if (jetzig.util.equalStringsCaseInsensitive(name, header.name)) return header.value;
+
-    }
+    var buf: [max_bytes_header_name]u8 = undefined;
-    return null;
+    const lower = std.ascii.lowerString(&buf, name);
+
+    return self.httpz_headers.get(lower);
 }
 
-/// Gets the first value for a given header identified by `name`. Names are case insensitive.
+/// Get all values for a given header identified by `name`. Names are case insensitive.
 pub fn getAll(self: Headers, name: []const u8) []const []const u8 {
     var headers = std.ArrayList([]const u8).init(self.allocator);
 
-    for (self.headers.items) |header| {
+    for (self.httpz_headers.keys, 0..) |key, index| {
-        if (jetzig.util.equalStringsCaseInsensitive(name, header.name)) {
+        var buf: [max_bytes_header_name]u8 = undefined;
-            headers.append(header.value) catch @panic("OOM");
+        const lower = std.ascii.lowerString(&buf, name);
-        }
+
+        if (std.mem.eql(u8, lower, key)) headers.append(self.httpz_headers.values[index]) catch @panic("OOM");
     }
     return headers.toOwnedSlice() catch @panic("OOM");
 }
 
-// Deprecated
+/// Deprecated
 pub fn getFirstValue(self: *const Headers, name: []const u8) ?[]const u8 {
     return self.get(name);
 }
 
-/// Appends `name` and `value` to headers.
+/// Add `name` and `value` to headers.
 pub fn append(self: *Headers, name: []const u8, value: []const u8) !void {
-    if (self.headers.items.len >= 25) return error.JetzigTooManyHeaders;
+    if (self.httpz_headers.len >= self.httpz_headers.keys.len) return error.JetzigTooManyHeaders;
 
-    self.headers.appendAssumeCapacity(.{ .name = name, .value = value });
+    var buf: [max_bytes_header_name]u8 = undefined;
-}
+    const lower = std.ascii.lowerString(&buf, name);
 
-/// Removes **all** header entries matching `name`. Names are case-insensitive.
+    const header = .{
-pub fn remove(self: *Headers, name: []const u8) void {
+        .name = try self.allocator.dupe(u8, lower),
-    if (self.headers.items.len == 0) return;
+        .value = try self.allocator.dupe(u8, value),
-
-    var index: usize = self.headers.items.len;
-
-    while (index > 0) {
-        index -= 1;
-        if (jetzig.util.equalStringsCaseInsensitive(name, self.headers.items[index].name)) {
-            _ = self.headers.orderedRemove(index);
-        }
-    }
-}
-
-/// Returns an iterator which implements `next()` returning each name/value of the stored headers.
-pub fn iterator(self: Headers) Iterator {
-    return Iterator{ .headers = self.headers };
-}
-
-/// Returns an array of `std.http.Header`, can be used to set response headers directly.
-/// Caller owns memory.
-pub fn stdHeaders(self: *Headers) !std.ArrayListUnmanaged(std.http.Header) {
-    var array = try std.ArrayListUnmanaged(std.http.Header).initCapacity(self.allocator, max_headers);
-
-    var it = self.iterator();
-    while (it.next()) |header| {
-        array.appendAssumeCapacity(.{ .name = header.name, .value = header.value });
-    }
-    return array;
-}
-
-/// Iterates through stored headers yielidng a `Header` on each call to `next()`
-const Iterator = struct {
-    headers: HeadersArray,
-    index: usize = 0,
-
-    const Header = struct {
-        name: []const u8,
-        value: []const u8,
     };
 
-    /// Returns the next item in the current iteration of headers.
+    try self.new_headers.append(header);
-    pub fn next(self: *Iterator) ?Header {
+    self.httpz_headers.add(header.name, header.value);
-        if (self.headers.items.len > self.index) {
-            const std_header = self.headers.items[self.index];
-            self.index += 1;
-            return .{ .name = std_header.name, .value = std_header.value };
-        } else {
-            return null;
 }
-    }
-};
 
-test "append" {
+test "append (deprecated)" {
     const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
     defer headers.deinit();
     try headers.append("foo", "bar");
-    try std.testing.expectEqualStrings(headers.getFirstValue("foo").?, "bar");
+    try std.testing.expectEqualStrings(headers.get("foo").?, "bar");
+}
+
+test "add" {
+    const allocator = std.testing.allocator;
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
+    defer headers.deinit();
+    try headers.append("foo", "bar");
+    try std.testing.expectEqualStrings(headers.get("foo").?, "bar");
 }
 
 test "get with multiple headers (bugfix regression test)" {
     const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
     defer headers.deinit();
     try headers.append("foo", "bar");
     try headers.append("bar", "baz");
@@ -123,75 +105,32 @@ test "get with multiple headers (bugfix regression test)" {
 
 test "getAll" {
     const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
     defer headers.deinit();
     try headers.append("foo", "bar");
     try headers.append("foo", "baz");
     try headers.append("bar", "qux");
     const all = headers.getAll("foo");
     defer allocator.free(all);
-    try std.testing.expectEqualSlices([]const u8, all, &[_][]const u8{ "bar", "baz" });
+    try std.testing.expectEqualDeep(all, &[_][]const u8{ "bar", "baz" });
 }
 
-test "append too many headers" {
+test "add too many headers" {
     const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
     defer headers.deinit();
-    for (0..25) |_| try headers.append("foo", "bar");
+    for (0..10) |_| try headers.append("foo", "bar");
 
     try std.testing.expectError(error.JetzigTooManyHeaders, headers.append("foo", "bar"));
 }
 
 test "case-insensitive matching" {
     const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
+    var httpz_headers = try httpz.key_value.KeyValue.init(allocator, 10);
+    var headers = Headers.init(allocator, &httpz_headers);
     defer headers.deinit();
     try headers.append("Content-Type", "bar");
-    try std.testing.expectEqualStrings(headers.getFirstValue("content-type").?, "bar");
+    try std.testing.expectEqualStrings(headers.get("content-type").?, "bar");
-}
-
-test "iterator" {
-    const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
-    defer headers.deinit();
-
-    try headers.append("foo", "bar");
-
-    var it = headers.iterator();
-    while (it.next()) |header| {
-        try std.testing.expectEqualStrings("foo", header.name);
-        try std.testing.expectEqualStrings("bar", header.value);
-        break;
-    } else {
-        try std.testing.expect(false);
-    }
-}
-
-test "remove" {
-    const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
-    defer headers.deinit();
-    try headers.append("foo", "baz");
-    try headers.append("foo", "qux");
-    try headers.append("bar", "quux");
-    headers.remove("Foo"); // Headers are case-insensitive.
-    try std.testing.expect(headers.getFirstValue("foo") == null);
-    try std.testing.expectEqualStrings(headers.getFirstValue("bar").?, "quux");
-}
-
-test "stdHeaders" {
-    const allocator = std.testing.allocator;
-    var headers = Headers.init(allocator);
-    defer headers.deinit();
-
-    try headers.append("foo", "bar");
-    try headers.append("baz", "qux");
-
-    var std_headers = try headers.stdHeaders();
-    defer std_headers.deinit(allocator);
-
-    try std.testing.expectEqualStrings("foo", std_headers.items[0].name);
-    try std.testing.expectEqualStrings("bar", std_headers.items[0].value);
-    try std.testing.expectEqualStrings("baz", std_headers.items[1].name);
-    try std.testing.expectEqualStrings("qux", std_headers.items[1].value);
 }

src/jetzig/http/Request.zig

@@ -1,5 +1,7 @@
 const std = @import("std");
 
+const httpz = @import("httpz");
+
 const jetzig = @import("../../jetzig.zig");
 
 const Request = @This();
@@ -14,14 +16,15 @@ path: jetzig.http.Path,
 method: Method,
 headers: jetzig.http.Headers,
 server: *jetzig.http.Server,
-std_http_request: std.http.Server.Request,
+httpz_request: *httpz.Request,
+httpz_response: *httpz.Response,
 response: *jetzig.http.Response,
 status_code: jetzig.http.status_codes.StatusCode = .not_found,
 response_data: *jetzig.data.Data,
 query_params: ?*jetzig.http.Query = null,
 query_body: ?*jetzig.http.Query = null,
-cookies: *jetzig.http.Cookies = undefined,
+_cookies: ?*jetzig.http.Cookies = null,
-session: *jetzig.http.Session = undefined,
+_session: ?*jetzig.http.Session = null,
 body: []const u8 = undefined,
 processed: bool = false,
 layout: ?[]const u8 = null,
@@ -90,20 +93,18 @@ pub fn init(
     allocator: std.mem.Allocator,
     server: *jetzig.http.Server,
     start_time: i128,
-    std_http_request: std.http.Server.Request,
+    httpz_request: *httpz.Request,
+    httpz_response: *httpz.Response,
     response: *jetzig.http.Response,
 ) !Request {
-    const method = switch (std_http_request.head.method) {
+    const method = switch (httpz_request.method) {
         .DELETE => Method.DELETE,
         .GET => Method.GET,
         .PATCH => Method.PATCH,
         .POST => Method.POST,
         .HEAD => Method.HEAD,
         .PUT => Method.PUT,
-        .CONNECT => Method.CONNECT,
         .OPTIONS => Method.OPTIONS,
-        .TRACE => Method.TRACE,
-        _ => return error.JetzigUnsupportedHttpMethod,
     };
 
     const response_data = try allocator.create(jetzig.data.Data);
@@ -111,13 +112,14 @@ pub fn init(
 
     return .{
         .allocator = allocator,
-        .path = jetzig.http.Path.init(std_http_request.head.target),
+        .path = jetzig.http.Path.init(httpz_request.url.raw),
         .method = method,
-        .headers = jetzig.http.Headers.init(allocator),
+        .headers = jetzig.http.Headers.init(allocator, &httpz_request.headers),
         .server = server,
         .response = response,
         .response_data = response_data,
-        .std_http_request = std_http_request,
+        .httpz_request = httpz_request,
+        .httpz_response = httpz_response,
         .start_time = start_time,
         .store = .{ .store = server.store, .allocator = allocator },
         .cache = .{ .store = server.cache, .allocator = allocator },
@@ -132,63 +134,37 @@ pub fn deinit(self: *Request) void {
     if (self.processed) self.allocator.free(self.body);
 }
 
-/// Process request, read body if present, parse headers (TODO)
+/// Process request, read body if present.
 pub fn process(self: *Request) !void {
-    var headers_it = self.std_http_request.iterateHeaders();
+    self.body = self.httpz_request.body() orelse "";
-    var cookie: ?[]const u8 = null;
-
-    while (headers_it.next()) |header| {
-        try self.headers.append(header.name, header.value);
-        if (std.mem.eql(u8, header.name, "Cookie")) cookie = header.value;
-    }
-
-    self.cookies = try self.allocator.create(jetzig.http.Cookies);
-    self.cookies.* = jetzig.http.Cookies.init(
-        self.allocator,
-        cookie orelse "",
-    );
-    try self.cookies.parse();
-
-    self.session = try self.allocator.create(jetzig.http.Session);
-    self.session.* = jetzig.http.Session.init(self.allocator, self.cookies, self.server.options.secret);
-    self.session.parse() catch |err| {
-        switch (err) {
-            error.JetzigInvalidSessionCookie => {
-                try self.server.logger.DEBUG("Invalid session cookie detected. Resetting session.", .{});
-                try self.session.reset();
-            },
-            else => return err,
-        }
-    };
-
-    const reader = try self.std_http_request.reader();
-    self.body = try reader.readAllAlloc(self.allocator, jetzig.config.get(usize, "max_bytes_request_body"));
     self.processed = true;
 }
 
-/// Set response headers, write response payload, and finalize the response.
+pub const CallbackState = struct {
-pub fn respond(self: *Request) !void {
+    arena: *std.heap.ArenaAllocator,
-    if (!self.processed) unreachable;
+    allocator: std.mem.Allocator,
+};
 
-    var cookie_it = self.cookies.headerIterator();
+pub fn responseCompleteCallback(ptr: *anyopaque) void {
-    while (try cookie_it.next()) |header| {
+    var state: *CallbackState = @ptrCast(@alignCast(ptr));
-        // FIXME: Skip setting cookies that are already present ?
+    state.arena.deinit();
-        try self.response.headers.append("Set-Cookie", header);
+    state.allocator.destroy(state.arena);
+    state.allocator.destroy(state);
 }
 
-    var std_response_headers = try self.response.headers.stdHeaders();
+/// Set response headers, write response payload, and finalize the response.
-    defer std_response_headers.deinit(self.allocator);
+pub fn respond(
+    self: *Request,
+    state: *CallbackState,
+) !void {
+    if (!self.processed) unreachable;
 
-    try self.std_http_request.respond(
+    try self.setCookieHeaders();
-        self.response.content,
+
-        .{
+    const status = jetzig.http.status_codes.get(self.response.status_code);
-            .keep_alive = false,
+    self.httpz_response.status = try status.getCodeInt();
-            .status = switch (self.response.status_code) {
+    self.httpz_response.body = self.response.content;
-                inline else => |tag| @field(std.http.Status, @tagName(tag)),
+    self.httpz_response.callback(responseCompleteCallback, @ptrCast(state));
-            },
-            .extra_headers = std_response_headers.items,
-        },
-    );
 }
 
 /// Render a response. This function can only be called once per request (repeat calls will
@@ -226,8 +202,15 @@ pub fn redirect(
 
     self.response_data.reset();
 
-    self.response.headers.remove("Location");
+    self.response.headers.append("Location", location) catch |err| {
-    self.response.headers.append("Location", location) catch @panic("OOM");
+        switch (err) {
+            error.JetzigTooManyHeaders => std.debug.print(
+                "Header limit reached. Unable to add redirect header.\n",
+                .{},
+            ),
+            else => @panic("OOM"),
+        }
+    };
 
     self.rendered_view = .{ .data = self.response_data, .status_code = status_code };
     return self.rendered_view.?;
@@ -315,7 +298,7 @@ pub fn queryParams(self: *Request) !*jetzig.data.Value {
     return self.query_params.?.data.value.?;
 }
 
-// Parses request body as params if present, otherwise delegates to `queryParams`.
+// Parse request body as params if present, otherwise delegate to `queryParams`.
 fn parseQuery(self: *Request) !*jetzig.data.Value {
     if (self.body.len == 0) return try self.queryParams();
     if (self.query_body) |parsed| return parsed.data.value.?;
@@ -332,7 +315,46 @@ fn parseQuery(self: *Request) !*jetzig.data.Value {
     return self.query_body.?.data.value.?;
 }
 
-/// Creates a new Job. Receives a job name which must resolve to `src/app/jobs/<name>.zig`
+/// Parse `Cookie` header into separate cookies.
+pub fn cookies(self: *Request) !*jetzig.http.Cookies {
+    if (self._cookies) |capture| return capture;
+
+    const cookie = self.httpz_request.headers.get("cookie");
+
+    const local_cookies = try self.allocator.create(jetzig.http.Cookies);
+    local_cookies.* = jetzig.http.Cookies.init(
+        self.allocator,
+        cookie orelse "",
+    );
+    try local_cookies.parse();
+
+    self._cookies = local_cookies;
+
+    return local_cookies;
+}
+
+/// Parse cookies, decrypt Jetzig cookie (`jetzig.http.Session.cookie_name`) and return a mutable
+/// `jetzig.http.Session`.
+pub fn session(self: *Request) !*jetzig.http.Session {
+    if (self._session) |capture| return capture;
+
+    const local_session = try self.allocator.create(jetzig.http.Session);
+    local_session.* = jetzig.http.Session.init(self.allocator, try self.cookies(), self.server.options.secret);
+    local_session.parse() catch |err| {
+        switch (err) {
+            error.JetzigInvalidSessionCookie => {
+                try self.server.logger.DEBUG("Invalid session cookie detected. Resetting session.", .{});
+                try local_session.reset();
+            },
+            else => return err,
+        }
+    };
+
+    self._session = local_session;
+    return local_session;
+}
+
+/// Create a new Job. Receives a job name which must resolve to `src/app/jobs/<name>.zig`
 /// Call `Job.put(...)` to set job params.
 /// Call `Job.background()` to run the job outside of the request/response flow.
 /// e.g.:
@@ -415,6 +437,14 @@ const RequestMail = struct {
     }
 };
 
+/// Create a new email from the mailer named `name` (`app/mailers/<name>.zig`). Pass delivery
+/// params to override defaults defined my mailer (`to`, `from`, `subject`, etc.).
+/// Must call `deliver` on the returned `RequestMail` to send the email.
+/// Example:
+/// ```zig
+/// const mail = request.mail("welcome", .{ .to = &.{"hello@jetzig.dev"} });
+/// try mail.deliver(.background, .{});
+/// ```
 pub fn mail(self: *Request, name: []const u8, mail_params: jetzig.mail.MailParams) RequestMail {
     return .{
         .request = self,
@@ -435,35 +465,23 @@ fn extensionFormat(self: *const Request) ?jetzig.http.Request.Format {
 }
 
 pub fn acceptHeaderFormat(self: *const Request) ?jetzig.http.Request.Format {
-    const acceptHeader = self.getHeader("Accept");
+    if (self.httpz_request.headers.get("accept")) |value| {
-
+        if (std.mem.eql(u8, value, "text/html")) return .HTML;
-    if (acceptHeader) |item| {
+        if (std.mem.eql(u8, value, "application/json")) return .JSON;
-        if (std.mem.eql(u8, item, "text/html")) return .HTML;
-        if (std.mem.eql(u8, item, "application/json")) return .JSON;
     }
 
     return null;
 }
 
 pub fn contentTypeHeaderFormat(self: *const Request) ?jetzig.http.Request.Format {
-    const acceptHeader = self.getHeader("content-type");
+    if (self.httpz_request.headers.get("content-type")) |value| {
-
+        if (std.mem.eql(u8, value, "text/html")) return .HTML;
-    if (acceptHeader) |item| {
+        if (std.mem.eql(u8, value, "application/json")) return .JSON;
-        if (std.mem.eql(u8, item, "text/html")) return .HTML;
-        if (std.mem.eql(u8, item, "application/json")) return .JSON;
     }
 
     return null;
 }
 
-pub fn hash(self: *Request) ![]const u8 {
-    return try std.fmt.allocPrint(
-        self.allocator,
-        "{s}-{s}-{s}",
-        .{ @tagName(self.method), self.path, @tagName(self.requestFormat()) },
-    );
-}
-
 pub fn fmtMethod(self: *const Request, colorized: bool) []const u8 {
     if (!colorized) return @tagName(self.method);
 
@@ -508,6 +526,17 @@ pub fn setResponse(
     };
 }
 
+fn setCookieHeaders(self: *Request) !void {
+    const local_cookies = self._cookies orelse return;
+    if (!local_cookies.modified) return;
+
+    var cookie_it = local_cookies.headerIterator();
+    while (try cookie_it.next()) |header| {
+        // FIXME: Skip setting cookies that are already present ?
+        try self.response.headers.append("Set-Cookie", header);
+    }
+}
+
 // Determine if a given route matches the current request.
 pub fn match(self: *Request, route: jetzig.views.Route) !bool {
     return switch (self.method) {

src/jetzig/http/Response.zig

@@ -1,27 +1,28 @@
 const std = @import("std");
+
+const httpz = @import("httpz");
+
 const jetzig = @import("../../jetzig.zig");
 const http = @import("../http.zig");
 
 const Self = @This();
 
 allocator: std.mem.Allocator,
-headers: *jetzig.http.Headers,
+headers: jetzig.http.Headers,
 content: []const u8,
 status_code: http.status_codes.StatusCode,
 content_type: []const u8,
 
 pub fn init(
     allocator: std.mem.Allocator,
+    httpz_response: *httpz.Response,
 ) !Self {
-    const headers = try allocator.create(jetzig.http.Headers);
-    headers.* = jetzig.http.Headers.init(allocator);
-
     return .{
         .allocator = allocator,
         .status_code = .no_content,
         .content_type = "application/octet-stream",
         .content = "",
-        .headers = headers,
+        .headers = jetzig.http.Headers.init(allocator, &httpz_response.headers),
     };
 }
 

src/jetzig/http/Server.zig

@@ -1,8 +1,10 @@
 const std = @import("std");
+const builtin = @import("builtin");
 
 const jetzig = @import("../../jetzig.zig");
 const zmpl = @import("zmpl");
 const zmd = @import("zmd");
+const httpz = @import("httpz");
 
 pub const ServerOptions = struct {
     logger: jetzig.loggers.Logger,
@@ -11,6 +13,7 @@ pub const ServerOptions = struct {
     secret: []const u8,
     detach: bool,
     environment: jetzig.Environment.EnvironmentName,
+    log_queue: *jetzig.loggers.LogQueue,
 };
 
 allocator: std.mem.Allocator,
@@ -59,64 +62,86 @@ pub fn deinit(self: *Server) void {
     self.allocator.free(self.options.bind);
 }
 
-pub fn listen(self: *Server) !void {
+const Dispatcher = struct {
-    const address = try std.net.Address.parseIp(self.options.bind, self.options.port);
+    server: *Server,
-    self.std_net_server = try address.listen(.{ .reuse_port = true });
 
-    self.initialized = true;
+    pub fn handle(self: Dispatcher, request: *httpz.Request, response: *httpz.Response) void {
+        self.server.processNextRequest(request, response) catch |err| {
+            self.server.errorHandlerFn(request, response, err);
+        };
+    }
+};
+
+pub fn listen(self: *Server) !void {
+    var httpz_server = try httpz.ServerCtx(Dispatcher, Dispatcher).init(
+        self.allocator,
+        .{
+            .port = self.options.port,
+            .address = self.options.bind,
+            .thread_pool = .{ .count = @intCast(try std.Thread.getCpuCount()) },
+        },
+        Dispatcher{ .server = self },
+    );
+    defer httpz_server.deinit();
 
     try self.logger.INFO("Listening on http://{s}:{} [{s}]", .{
         self.options.bind,
         self.options.port,
         @tagName(self.options.environment),
     });
-    try self.processRequests();
+
+    self.initialized = true;
+
+    return try httpz_server.listen();
 }
 
-fn processRequests(self: *Server) !void {
+pub fn errorHandlerFn(self: *Server, request: *httpz.Request, response: *httpz.Response, err: anyerror) void {
-    // TODO: Keepalive
+    if (isBadHttpError(err)) return;
-    while (true) {
-        var arena = std.heap.ArenaAllocator.init(self.allocator);
-        errdefer arena.deinit();
-        const allocator = arena.allocator();
 
-        const connection = try self.std_net_server.accept();
+    self.logger.ERROR("Encountered error: {s} {s}", .{ @errorName(err), request.url.raw }) catch {};
-
+    response.body = "500 Internal Server Error";
-        var buf: [jetzig.config.get(usize, "http_buffer_size")]u8 = undefined;
-        var std_http_server = std.http.Server.init(connection, &buf);
-        errdefer std_http_server.connection.stream.close();
-
-        self.processNextRequest(allocator, &std_http_server) catch |err| {
-            if (isBadHttpError(err)) {
-                std_http_server.connection.stream.close();
-                continue;
-            } else return err;
-        };
-
-        std_http_server.connection.stream.close();
-        arena.deinit();
-    }
 }
 
-fn processNextRequest(self: *Server, allocator: std.mem.Allocator, std_http_server: *std.http.Server) !void {
+fn processNextRequest(
+    self: *Server,
+    httpz_request: *httpz.Request,
+    httpz_response: *httpz.Response,
+) !void {
     const start_time = std.time.nanoTimestamp();
 
-    const std_http_request = try std_http_server.receiveHead();
+    const state = try self.allocator.create(jetzig.http.Request.CallbackState);
-    if (std_http_server.state == .receiving_head) return error.JetzigParseHeadError;
+    const arena = try self.allocator.create(std.heap.ArenaAllocator);
+    arena.* = std.heap.ArenaAllocator.init(self.allocator);
+    state.* = .{
+        .arena = arena,
+        .allocator = self.allocator,
+    };
 
-    var response = try jetzig.http.Response.init(allocator);
+    // Regular arena deinit occurs in jetzig.http.Request.responseCompletCallback
-    var request = try jetzig.http.Request.init(allocator, self, start_time, std_http_request, &response);
+    errdefer state.arena.deinit();
+
+    const allocator = state.arena.allocator();
+
+    var response = try jetzig.http.Response.init(allocator, httpz_response);
+    var request = try jetzig.http.Request.init(
+        allocator,
+        self,
+        start_time,
+        httpz_request,
+        httpz_response,
+        &response,
+    );
 
     try request.process();
 
     var middleware_data = try jetzig.http.middleware.afterRequest(&request);
 
     try self.renderResponse(&request);
-    try request.response.headers.append("content-type", response.content_type);
+    try request.response.headers.append("Content-Type", response.content_type);
 
     try jetzig.http.middleware.beforeResponse(&middleware_data, &request);
 
-    try request.respond();
+    try request.respond(state);
 
     try jetzig.http.middleware.afterResponse(&middleware_data, &request);
     jetzig.http.middleware.deinit(&middleware_data, &request);
@@ -168,7 +193,17 @@ fn renderHTML(
             };
             return request.setResponse(rendered, .{});
         } else {
-            return request.setResponse(try self.renderNotFound(request), .{});
+            // Try rendering without a template to see if we get a redirect.
+            const rendered = self.renderView(matched_route, request, null) catch |err| {
+                if (isUnhandledError(err)) return err;
+                const rendered_error = try self.renderInternalServerError(request, err);
+                return request.setResponse(rendered_error, .{});
+            };
+
+            return if (request.redirected)
+                request.setResponse(rendered, .{})
+            else
+                request.setResponse(try self.renderNotFound(request), .{});
         }
     } else {
         if (try self.renderMarkdown(request)) |rendered| {

src/jetzig/http/Session.zig

@@ -28,6 +28,7 @@ pub fn init(
     };
 }
 
+/// Parse session cookie.
 pub fn parse(self: *Self) !void {
     if (self.cookies.get(cookie_name)) |cookie| {
         try self.parseSessionCookie(cookie.value);
@@ -36,6 +37,7 @@ pub fn parse(self: *Self) !void {
     }
 }
 
+/// Reset session to an empty state.
 pub fn reset(self: *Self) !void {
     self.data.reset();
     _ = try self.data.object();
@@ -43,12 +45,14 @@ pub fn reset(self: *Self) !void {
     try self.save();
 }
 
+/// Free allocated memory.
 pub fn deinit(self: *Self) void {
     if (self.state != .parsed) return;
 
     self.data.deinit();
 }
 
+/// Get a value from the session.
 pub fn get(self: *Self, key: []const u8) !?*jetzig.data.Value {
     if (self.state != .parsed) return error.UnparsedSessionCookie;
 
@@ -58,6 +62,7 @@ pub fn get(self: *Self, key: []const u8) !?*jetzig.data.Value {
     };
 }
 
+/// Put a value into the session.
 pub fn put(self: *Self, key: []const u8, value: *jetzig.data.Value) !void {
     if (self.state != .parsed) return error.UnparsedSessionCookie;
 

src/jetzig/http/status_codes.zig

@@ -178,6 +178,12 @@ pub const TaggedStatusCode = union(StatusCode) {
         };
     }
 
+    pub fn getCodeInt(self: Self) !u16 {
+        return switch (self) {
+            inline else => |capture| try std.fmt.parseInt(u16, capture.code, 10),
+        };
+    }
+
     pub fn getMessage(self: Self) []const u8 {
         return switch (self) {
             inline else => |capture| capture.message,

src/jetzig/loggers.zig

@@ -6,10 +6,18 @@ const Self = @This();
 
 pub const DevelopmentLogger = @import("loggers/DevelopmentLogger.zig");
 pub const JsonLogger = @import("loggers/JsonLogger.zig");
+pub const LogQueue = @import("loggers/LogQueue.zig");
 
 pub const LogLevel = enum(u4) { TRACE, DEBUG, INFO, WARN, ERROR, FATAL };
 pub const LogFormat = enum { development, json };
 
+/// Infer a log target (stdout or stderr) from a given log level.
+pub inline fn logTarget(comptime level: LogLevel) LogQueue.Target {
+    return switch (level) {
+        .TRACE, .DEBUG, .INFO => .stdout,
+        .WARN, .ERROR, .FATAL => .stderr,
+    };
+}
 pub const Logger = union(enum) {
     development_logger: DevelopmentLogger,
     json_logger: JsonLogger,

src/jetzig/loggers/DevelopmentLogger.zig

@@ -8,28 +8,23 @@ const Timestamp = jetzig.types.Timestamp;
 const LogLevel = jetzig.loggers.LogLevel;
 
 allocator: std.mem.Allocator,
-stdout: std.fs.File,
-stderr: std.fs.File,
 stdout_colorized: bool,
 stderr_colorized: bool,
 level: LogLevel,
-mutex: std.Thread.Mutex,
+log_queue: *jetzig.loggers.LogQueue,
 
 /// Initialize a new Development Logger.
 pub fn init(
     allocator: std.mem.Allocator,
     level: LogLevel,
-    stdout: std.fs.File,
+    log_queue: *jetzig.loggers.LogQueue,
-    stderr: std.fs.File,
 ) DevelopmentLogger {
     return .{
         .allocator = allocator,
         .level = level,
-        .stdout = stdout,
+        .log_queue = log_queue,
-        .stderr = stderr,
+        .stdout_colorized = log_queue.stdout_is_tty,
-        .stdout_colorized = stdout.isTty(),
+        .stderr_colorized = log_queue.stderr_is_tty,
-        .stderr_colorized = stderr.isTty(),
-        .mutex = std.Thread.Mutex{},
     };
 }
 
@@ -45,40 +40,28 @@ pub fn log(
     const output = try std.fmt.allocPrint(self.allocator, message, args);
     defer self.allocator.free(output);
 
-    const timestamp = Timestamp.init(std.time.timestamp(), self.allocator);
+    const timestamp = Timestamp.init(std.time.timestamp());
-    const iso8601 = try timestamp.iso8601();
+    var timestamp_buf: [256]u8 = undefined;
-    defer self.allocator.free(iso8601);
+    const iso8601 = try timestamp.iso8601(&timestamp_buf);
 
-    const colorized = switch (level) {
+    const target = jetzig.loggers.logTarget(level);
-        .TRACE, .DEBUG, .INFO => self.stdout_colorized,
+    const formatted_level = colorizedLogLevel(level);
-        .WARN, .ERROR, .FATAL => self.stderr_colorized,
-    };
-    const file = switch (level) {
-        .TRACE, .DEBUG, .INFO => self.stdout,
-        .WARN, .ERROR, .FATAL => self.stderr,
-    };
-    const writer = file.writer();
-    const level_formatted = if (colorized) colorizedLogLevel(level) else @tagName(level);
 
-    @constCast(self).mutex.lock();
+    try self.log_queue.print(
-    defer @constCast(self).mutex.unlock();
+        "{s: >5} [{s}] {s}\n",
-
+        .{ formatted_level, iso8601, output },
-    try writer.print("{s: >5} [{s}] {s}\n", .{ level_formatted, iso8601, output });
+        target,
-
+    );
-    if (!file.isTty()) try file.sync();
 }
 
 /// Log a one-liner including response status code, path, method, duration, etc.
 pub fn logRequest(self: DevelopmentLogger, request: *const jetzig.http.Request) !void {
-    const formatted_duration = if (self.stdout_colorized)
+    var duration_buf: [256]u8 = undefined;
-        try jetzig.colors.duration(self.allocator, jetzig.util.duration(request.start_time))
+    const formatted_duration = try jetzig.colors.duration(
-    else
+        &duration_buf,
-        try std.fmt.allocPrint(
+        jetzig.util.duration(request.start_time),
-            self.allocator,
+        self.stdout_colorized,
-            "{}",
-            .{std.fmt.fmtDurationSigned(jetzig.util.duration(request.start_time))},
     );
-    defer self.allocator.free(formatted_duration);
 
     const status: jetzig.http.status_codes.TaggedStatusCode = switch (request.response.status_code) {
         inline else => |status_code| @unionInit(
@@ -93,17 +76,23 @@ pub fn logRequest(self: DevelopmentLogger, request: *const jetzig.http.Request)
     else
         status.getFormatted(.{});
 
-    const message = try std.fmt.allocPrint(self.allocator, "[{s}/{s}/{s}] {s}", .{
+    const timestamp = Timestamp.init(std.time.timestamp());
+    var timestamp_buf: [256]u8 = undefined;
+    const iso8601 = try timestamp.iso8601(&timestamp_buf);
+
+    const formatted_level = if (self.stdout_colorized) colorizedLogLevel(.INFO) else @tagName(.INFO);
+
+    try self.log_queue.print("{s: >5} [{s}] [{s}/{s}/{s}] {s}\n", .{
+        formatted_level,
+        iso8601,
         formatted_duration,
         request.fmtMethod(self.stdout_colorized),
         formatted_status,
         request.path.path,
-    });
+    }, .stdout);
-    defer self.allocator.free(message);
-    try self.log(.INFO, "{s}", .{message});
 }
 
-fn colorizedLogLevel(comptime level: LogLevel) []const u8 {
+inline fn colorizedLogLevel(comptime level: LogLevel) []const u8 {
     return switch (level) {
         .TRACE => jetzig.colors.white(@tagName(level)),
         .DEBUG => jetzig.colors.cyan(@tagName(level)),

src/jetzig/loggers/JsonLogger.zig

@@ -11,6 +11,7 @@ const LogMessage = struct {
     timestamp: []const u8,
     message: []const u8,
 };
+
 const RequestLogMessage = struct {
     level: []const u8,
     timestamp: []const u8,
@@ -21,24 +22,19 @@ const RequestLogMessage = struct {
 };
 
 allocator: std.mem.Allocator,
-stdout: std.fs.File,
+log_queue: *jetzig.loggers.LogQueue,
-stderr: std.fs.File,
 level: LogLevel,
-mutex: std.Thread.Mutex,
 
 /// Initialize a new JSON Logger.
 pub fn init(
     allocator: std.mem.Allocator,
     level: LogLevel,
-    stdout: std.fs.File,
+    log_queue: *jetzig.loggers.LogQueue,
-    stderr: std.fs.File,
 ) JsonLogger {
     return .{
         .allocator = allocator,
         .level = level,
-        .stdout = stdout,
+        .log_queue = log_queue,
-        .stderr = stderr,
-        .mutex = std.Thread.Mutex{},
     };
 }
 
@@ -54,24 +50,16 @@ pub fn log(
     const output = try std.fmt.allocPrint(self.allocator, message, args);
     defer self.allocator.free(output);
 
-    const timestamp = Timestamp.init(std.time.timestamp(), self.allocator);
+    const timestamp = Timestamp.init(std.time.timestamp());
-    const iso8601 = try timestamp.iso8601();
+    var timestamp_buf: [256]u8 = undefined;
-    defer self.allocator.free(iso8601);
+    const iso8601 = try timestamp.iso8601(&timestamp_buf);
 
-    const file = self.getFile(level);
-    const writer = file.writer();
     const log_message = LogMessage{ .level = @tagName(level), .timestamp = iso8601, .message = output };
 
     const json = try std.json.stringifyAlloc(self.allocator, log_message, .{ .whitespace = .minified });
     defer self.allocator.free(json);
 
-    @constCast(self).mutex.lock();
+    try self.log_queue.print("{s}\n", .{json}, jetzig.loggers.logTarget(level));
-    defer @constCast(self).mutex.unlock();
-
-    try writer.writeAll(json);
-    try writer.writeByte('\n');
-
-    if (!file.isTty()) try file.sync(); // Make configurable ?
 }
 
 /// Log a one-liner including response status code, path, method, duration, etc.
@@ -80,9 +68,9 @@ pub fn logRequest(self: *const JsonLogger, request: *const jetzig.http.Request)
 
     const duration = jetzig.util.duration(request.start_time);
 
-    const timestamp = Timestamp.init(std.time.timestamp(), self.allocator);
+    const timestamp = Timestamp.init(std.time.timestamp());
-    const iso8601 = try timestamp.iso8601();
+    var timestamp_buf: [256]u8 = undefined;
-    defer self.allocator.free(iso8601);
+    const iso8601 = try timestamp.iso8601(&timestamp_buf);
 
     const status = switch (request.response.status_code) {
         inline else => |status_code| @unionInit(
@@ -91,6 +79,7 @@ pub fn logRequest(self: *const JsonLogger, request: *const jetzig.http.Request)
             .{},
         ),
     };
+
     const message = RequestLogMessage{
         .level = @tagName(level),
         .timestamp = iso8601,
@@ -99,19 +88,17 @@ pub fn logRequest(self: *const JsonLogger, request: *const jetzig.http.Request)
         .path = request.path.path,
         .duration = duration,
     };
-    const json = try std.json.stringifyAlloc(self.allocator, message, .{ .whitespace = .minified });
-    defer self.allocator.free(json);
 
-    const file = self.getFile(level);
+    var buf: [4096]u8 = undefined;
-    const writer = file.writer();
+    var stream = std.io.fixedBufferStream(&buf);
+    std.json.stringify(message, .{ .whitespace = .minified }, stream.writer()) catch |err| {
+        switch (err) {
+            error.NoSpaceLeft => {}, // TODO: Spill to heap
+            else => return err,
+        }
+    };
 
-    @constCast(self).mutex.lock();
+    try self.log_queue.print("{s}\n", .{stream.getWritten()}, .stdout);
-    defer @constCast(self).mutex.unlock();
-
-    try writer.writeAll(json);
-    try writer.writeByte('\n');
-
-    if (!file.isTty()) try file.sync(); // Make configurable ?
 }
 
 fn getFile(self: JsonLogger, level: LogLevel) std.fs.File {

src/jetzig/loggers/LogQueue.zig

@@ -0,0 +1,370 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+const jetzig = @import("../../jetzig.zig");
+
+const buffer_size = jetzig.config.get(usize, "log_message_buffer_len");
+const max_pool_len = jetzig.config.get(usize, "max_log_pool_len");
+
+const List = std.DoublyLinkedList(Event);
+const Buffer = [buffer_size]u8;
+
+allocator: std.mem.Allocator,
+node_allocator: std.heap.MemoryPool(List.Node),
+buffer_allocator: std.heap.MemoryPool(Buffer),
+list: List,
+read_write_mutex: std.Thread.Mutex,
+condition: std.Thread.Condition,
+condition_mutex: std.Thread.Mutex,
+writer: Writer = undefined,
+reader: Reader = undefined,
+node_pool: std.ArrayList(*List.Node),
+buffer_pool: std.ArrayList(*Buffer),
+position: usize,
+stdout_is_tty: bool = undefined,
+stderr_is_tty: bool = undefined,
+stdout_colorize: bool = undefined,
+stderr_colorize: bool = undefined,
+state: enum { pending, ready } = .pending,
+
+const LogQueue = @This();
+
+pub const Target = enum { stdout, stderr };
+
+const Event = struct {
+    message: *Buffer,
+    len: usize,
+    target: Target,
+    ptr: ?[]const u8,
+};
+
+/// Create a new `LogQueue`.
+pub fn init(allocator: std.mem.Allocator) LogQueue {
+    return .{
+        .allocator = allocator,
+        .node_allocator = initPool(allocator, List.Node),
+        .buffer_allocator = initPool(allocator, Buffer),
+        .list = List{},
+        .condition = std.Thread.Condition{},
+        .condition_mutex = std.Thread.Mutex{},
+        .read_write_mutex = std.Thread.Mutex{},
+        .node_pool = std.ArrayList(*List.Node).init(allocator),
+        .buffer_pool = std.ArrayList(*Buffer).init(allocator),
+        .position = 0,
+    };
+}
+
+/// Free allocated resources and return to `pending` state.
+pub fn deinit(self: *LogQueue) void {
+    self.node_pool.deinit();
+    self.buffer_pool.deinit();
+
+    self.buffer_allocator.deinit();
+    self.node_allocator.deinit();
+
+    self.state = .pending;
+}
+
+/// Set the stdout and stderr outputs. Must be called before `print`.
+pub fn setFiles(self: *LogQueue, stdout_file: std.fs.File, stderr_file: std.fs.File) !void {
+    self.writer = Writer{
+        .queue = self,
+        .mutex = std.Thread.Mutex{},
+    };
+    self.reader = Reader{
+        .stdout_file = stdout_file,
+        .stderr_file = stderr_file,
+        .queue = self,
+    };
+    self.stdout_is_tty = stdout_file.isTty();
+    self.stderr_is_tty = stderr_file.isTty();
+
+    self.stdout_colorize = std.io.tty.detectConfig(stdout_file) != .no_color;
+    self.stderr_colorize = std.io.tty.detectConfig(stderr_file) != .no_color;
+
+    self.state = .ready;
+}
+
+pub fn print(self: *LogQueue, comptime message: []const u8, args: anytype, target: Target) !void {
+    std.debug.assert(self.state == .ready);
+
+    try self.writer.print(message, args, target);
+}
+
+/// Writer for `LogQueue`. Receives log events and publishes to the queue.
+pub const Writer = struct {
+    queue: *LogQueue,
+    position: usize = 0,
+    mutex: std.Thread.Mutex,
+
+    /// Print a log event. Messages longer than `jetzig.config.get(usize, "log_message_buffer_len")`
+    /// spill to heap with degraded performance. Adjust buffer length or limit long entries to
+    /// ensure fast logging performance.
+    /// `target` must be `.stdout` or `.stderr`.
+    pub fn print(
+        self: *Writer,
+        comptime message: []const u8,
+        args: anytype,
+        target: Target,
+    ) !void {
+        self.mutex.lock();
+        defer self.mutex.unlock();
+
+        const buf = try self.getBuffer();
+        self.position += 1;
+        var ptr: ?[]const u8 = null;
+
+        const result = std.fmt.bufPrint(buf, message, args) catch |err| switch (err) {
+            error.NoSpaceLeft => blk: {
+                ptr = try std.fmt.allocPrint(self.queue.allocator, message, args);
+                self.position -= 1;
+                break :blk null;
+            },
+        };
+
+        try self.queue.append(.{
+            .message = buf,
+            .target = target,
+            .len = if (ptr) |capture| capture.len else result.?.len,
+            .ptr = ptr,
+        });
+    }
+
+    fn getBuffer(self: *Writer) !*Buffer {
+        const buffer = if (self.position >= self.queue.buffer_pool.items.len)
+            try self.queue.buffer_allocator.create()
+        else
+            self.queue.buffer_pool.items[self.position];
+
+        return buffer;
+    }
+};
+
+/// Reader for `LogQueue`. Reads log events from the queue and writes them to the designated
+/// target (stdout or stderr).
+pub const Reader = struct {
+    stdout_file: std.fs.File,
+    stderr_file: std.fs.File,
+    queue: *LogQueue,
+
+    /// Publish log events from the queue. Invoke from a dedicated thread. Sleeps when log queue
+    /// is empty, wakes up when a new event is published.
+    pub fn publish(self: *Reader, options: struct { oneshot: bool = false }) !void {
+        std.debug.assert(self.queue.state == .ready);
+
+        const stdout_writer = self.stdout_file.writer();
+        const stderr_writer = self.stderr_file.writer();
+
+        while (true) {
+            self.queue.condition_mutex.lock();
+            defer self.queue.condition_mutex.unlock();
+
+            if (!options.oneshot) self.queue.condition.wait(&self.queue.condition_mutex);
+
+            var stdout_written = false;
+            var stderr_written = false;
+            var file: std.fs.File = undefined;
+            var colorize = false;
+
+            while (try self.queue.popFirst()) |event| {
+                self.queue.writer.mutex.lock();
+                defer self.queue.writer.mutex.unlock();
+
+                const writer = switch (event.target) {
+                    .stdout => blk: {
+                        stdout_written = true;
+                        if (builtin.os.tag == .windows) {
+                            file = self.stdout_file;
+                            colorize = self.queue.stdout_colorize;
+                        }
+                        break :blk stdout_writer;
+                    },
+                    .stderr => blk: {
+                        stderr_written = true;
+                        if (builtin.os.tag == .windows) {
+                            file = self.stderr_file;
+                            colorize = self.queue.stderr_colorize;
+                        }
+                        break :blk stderr_writer;
+                    },
+                };
+
+                if (event.ptr) |ptr| {
+                    // Log message spilled to heap
+                    defer self.queue.allocator.free(ptr);
+                    try writer.writeAll(ptr);
+                    continue;
+                }
+
+                if (builtin.os.tag == .windows and colorize) {
+                    try writeWindows(file, writer, event);
+                } else {
+                    try writer.writeAll(event.message[0..event.len]);
+                }
+
+                self.queue.writer.position -= 1;
+
+                if (self.queue.writer.position < self.queue.buffer_pool.items.len) {
+                    self.queue.buffer_pool.items[self.queue.writer.position] = event.message;
+                } else {
+                    if (self.queue.buffer_pool.items.len >= max_pool_len) {
+                        self.queue.buffer_allocator.destroy(@alignCast(event.message));
+                        self.queue.writer.position += 1;
+                    } else {
+                        try self.queue.buffer_pool.append(event.message);
+                    }
+                }
+            }
+
+            if (stdout_written and !self.queue.stdout_is_tty) try self.stdout_file.sync();
+            if (stderr_written and !self.queue.stderr_is_tty) try self.stderr_file.sync();
+
+            if (options.oneshot) break;
+        }
+    }
+};
+
+// Append a log event to the queue. Signal the publish loop thread to wake up. Recycle nodes if
+// available in the pool, otherwise create a new one.
+fn append(self: *LogQueue, event: Event) !void {
+    self.read_write_mutex.lock();
+    defer self.read_write_mutex.unlock();
+
+    const node = if (self.position >= self.node_pool.items.len)
+        try self.node_allocator.create()
+    else
+        self.node_pool.items[self.position];
+
+    self.position += 1;
+
+    node.* = .{ .data = event };
+    self.list.append(node);
+
+    self.condition.signal();
+}
+
+// Pop a log event from the queue. Return node to the pool for re-use.
+fn popFirst(self: *LogQueue) !?Event {
+    self.read_write_mutex.lock();
+    defer self.read_write_mutex.unlock();
+
+    if (self.list.popFirst()) |node| {
+        const value = node.data;
+        self.position -= 1;
+        if (self.position < self.node_pool.items.len) {
+            self.node_pool.items[self.position] = node;
+        } else {
+            if (self.node_pool.items.len >= max_pool_len) {
+                self.node_allocator.destroy(node);
+                self.position += 1;
+            } else {
+                try self.node_pool.append(node);
+            }
+        }
+        return value;
+    } else {
+        return null;
+    }
+}
+
+fn initPool(allocator: std.mem.Allocator, T: type) std.heap.MemoryPool(T) {
+    return std.heap.MemoryPool(T).initPreheated(allocator, max_pool_len) catch @panic("OOM");
+}
+
+fn writeWindows(file: std.fs.File, writer: anytype, event: Event) !void {
+    var info: std.os.windows.CONSOLE_SCREEN_BUFFER_INFO = undefined;
+    const config: std.io.tty.Config = if (std.os.windows.kernel32.GetConsoleScreenBufferInfo(
+        file.handle,
+        &info,
+    ) != std.os.windows.TRUE)
+        .no_color
+    else
+        .{ .windows_api = .{
+            .handle = file.handle,
+            .reset_attributes = info.wAttributes,
+        } };
+
+    var it = std.mem.tokenizeSequence(u8, event.message[0..event.len], "\x1b[");
+    while (it.next()) |token| {
+        if (std.mem.indexOfScalar(u8, token, 'm')) |index| {
+            if (index > 0 and index + 1 < token.len) {
+                if (jetzig.colors.codes_map.get(token[0..index])) |color| {
+                    try config.setColor(writer, color);
+                    try writer.writeAll(token[index + 1 ..]);
+                    continue;
+                }
+            }
+        }
+        // Fallback
+        try writer.writeAll(token);
+    }
+}
+
+test "print to stdout and stderr" {
+    var log_queue = LogQueue.init(std.testing.allocator);
+    defer log_queue.deinit();
+
+    var tmp_dir = std.testing.tmpDir(.{});
+    defer tmp_dir.cleanup();
+
+    const stdout = try tmp_dir.dir.createFile("stdout.log", .{ .read = true });
+    defer stdout.close();
+
+    const stderr = try tmp_dir.dir.createFile("stderr.log", .{ .read = true });
+    defer stderr.close();
+
+    try log_queue.setFiles(stdout, stderr);
+    try log_queue.print("foo {s}\n", .{"bar"}, .stdout);
+    try log_queue.print("baz {s}\n", .{"qux"}, .stderr);
+    try log_queue.print("quux {s}\n", .{"corge"}, .stdout);
+    try log_queue.print("grault {s}\n", .{"garply"}, .stderr);
+    try log_queue.print("waldo {s}\n", .{"fred"}, .stderr);
+    try log_queue.print("plugh {s}\n", .{"zyzzy"}, .stdout);
+
+    try log_queue.reader.publish(.{ .oneshot = true });
+
+    try stdout.seekTo(0);
+    var buf: [1024]u8 = undefined;
+    var len = try stdout.readAll(&buf);
+
+    try std.testing.expectEqualStrings(
+        \\foo bar
+        \\quux corge
+        \\plugh zyzzy
+        \\
+    , buf[0..len]);
+
+    try stderr.seekTo(0);
+    len = try stderr.readAll(&buf);
+    try std.testing.expectEqualStrings(
+        \\baz qux
+        \\grault garply
+        \\waldo fred
+        \\
+    , buf[0..len]);
+}
+
+test "long messages" {
+    var log_queue = LogQueue.init(std.testing.allocator);
+    defer log_queue.deinit();
+
+    var tmp_dir = std.testing.tmpDir(.{});
+    defer tmp_dir.cleanup();
+
+    const stdout = try tmp_dir.dir.createFile("stdout.log", .{ .read = true });
+    defer stdout.close();
+
+    const stderr = try tmp_dir.dir.createFile("stderr.log", .{ .read = true });
+    defer stderr.close();
+
+    try log_queue.setFiles(stdout, stderr);
+    try log_queue.print("foo" ** buffer_size, .{}, .stdout);
+
+    try log_queue.reader.publish(.{ .oneshot = true });
+
+    try stdout.seekTo(0);
+    var buf: [buffer_size * 3]u8 = undefined;
+    const len = try stdout.readAll(&buf);
+
+    try std.testing.expectEqualStrings("foo" ** buffer_size, buf[0..len]);
+}

src/jetzig/middleware/HtmxMiddleware.zig

@@ -15,7 +15,7 @@ pub fn init(request: *jetzig.http.Request) !*Self {
 /// content rendered directly by the view function.
 pub fn afterRequest(self: *Self, request: *jetzig.http.Request) !void {
     _ = self;
-    if (request.getHeader("HX-Target")) |target| {
+    if (request.headers.get("HX-Target")) |target| {
         try request.server.logger.DEBUG(
             "[middleware-htmx] htmx request detected, disabling layout. (#{s})",
             .{target},
@@ -29,10 +29,9 @@ pub fn afterRequest(self: *Self, request: *jetzig.http.Request) !void {
 pub fn beforeResponse(self: *Self, request: *jetzig.http.Request, response: *jetzig.http.Response) !void {
     _ = self;
     if (response.status_code != .moved_permanently and response.status_code != .found) return;
-    if (request.headers.getFirstValue("HX-Request") == null) return;
+    if (request.headers.get("HX-Request") == null) return;
 
-    if (response.headers.getFirstValue("Location")) |location| {
+    if (response.headers.get("Location")) |location| {
-        response.headers.remove("Location");
         response.status_code = .ok;
         request.response_data.reset();
         try response.headers.append("HX-Redirect", location);

src/jetzig/types/Timestamp.zig

@@ -3,7 +3,6 @@ const std = @import("std");
 const Self = @This();
 
 timestamp: i64,
-allocator: std.mem.Allocator,
 
 const constants = struct {
     pub const seconds_in_day: i64 = 60 * 60 * 24;
@@ -12,18 +11,18 @@ const constants = struct {
     pub const epoch_year: i64 = 1970;
 };
 
-pub fn init(timestamp: i64, allocator: std.mem.Allocator) Self {
+pub fn init(timestamp: i64) Self {
-    return .{ .allocator = allocator, .timestamp = timestamp };
+    return .{ .timestamp = timestamp };
 }
 
-pub fn iso8601(self: *const Self) ![]const u8 {
+pub fn iso8601(self: *const Self, buf: *[256]u8) ![]const u8 {
     const u32_year: u32 = @intCast(self.year());
     const u32_month: u32 = @intCast(self.month());
     const u32_day_of_month: u32 = @intCast(self.dayOfMonth());
     const u32_hour: u32 = @intCast(self.hour());
     const u32_minute: u32 = @intCast(self.minute());
     const u32_second: u32 = @intCast(self.second());
-    return try std.fmt.allocPrint(self.allocator, "{d:0>4}-{d:0>2}-{d:0>2} {d:0>2}:{d:0>2}:{d:0>2}", .{
+    return try std.fmt.bufPrint(buf, "{d:0>4}-{d:0>2}-{d:0>2}T{d:0>2}:{d:0>2}:{d:0>2}", .{
         u32_year,
         u32_month,
         u32_day_of_month,

src/tests.zig

@@ -6,4 +6,5 @@ test {
     _ = @import("jetzig/http/Path.zig");
     _ = @import("jetzig/jobs/Job.zig");
     _ = @import("jetzig/mail/Mail.zig");
+    _ = @import("jetzig/loggers/LogQueue.zig");
 }