feat: Set Cache-Control header on responses

Cargo.lock

@@ -1367,7 +1367,7 @@ dependencies = [
 
 [[package]]
 name = "karnaugh"
-version = "0.1.2"
+version = "0.1.4"
 dependencies = [
  "axum",
  "clap",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "karnaugh"
-version = "0.1.2"
+version = "0.1.4"
 edition = "2024"
 
 [dependencies]
@@ -10,7 +10,7 @@ itertools = "0.14.0"
 tar = "0.4.44"
 time = "0.3.47"
 tokio = { version = "1.48.0", features = ["macros", "rt-multi-thread"] }
-tower-http = { version = "0.6.8", features = ["compression-br", "fs", "trace"] }
+tower-http = { version = "0.6.8", features = ["compression-br", "fs", "trace", "set-header"] }
 tracing = "0.1.43"
 tracing-subscriber = "0.3.22"
 typst-html = { git = "https://github.com/mkorje/typst.git", branch = "mathml" }

flake.nix

@@ -21,9 +21,9 @@
       rec {
         packages.karnaugh = pkgs.rustPlatform.buildRustPackage (final: {
           pname = "karnaugh";
-          version = "0.1.2";
+          version = "0.1.4";
           src = self;
-          cargoHash = "sha256-YRSK2Vk6I1y/PhH1ZyFAYF0E6IB55So3MTs8B5df4LM=";
+          cargoHash = "sha256-pwZOy+9cnpEskNf4HYC81UbXPJIOnUCtxEKzEVTrNyQ=";
         });
         packages.container = pkgs.dockerTools.buildImage {
           name = "karnaugh";

src/main.rs

@@ -8,7 +8,7 @@ use ::typst::syntax::VirtualPath;
 use axum::{
     Router,
     extract::{Path, State},
-    http::StatusCode,
+    http::{HeaderValue, StatusCode, header::CACHE_CONTROL},
     response::{Html, IntoResponse, Response},
     routing::get,
 };
@@ -17,6 +17,7 @@ use itertools::Itertools;
 use tower_http::{
     compression::CompressionLayer,
     services::{ServeDir, ServeFile},
+    set_header::SetResponseHeaderLayer,
     trace::TraceLayer,
 };
 use tracing::{Level, info};
@@ -97,14 +98,20 @@ async fn main() {
     let mut favicon = state.config.get_full_assets_path();
     favicon.push(PathBuf::from("favicon.svg"));
 
+    let assets_service = ServeDir::new(state.config.get_full_assets_path());
+
     let app = Router::new()
         .route("/", get(root_handler))
         .route("/{*path}", get(typst_handler))
         .route_service("/favicon.ico", ServeFile::new(favicon))
-        .nest_service("/assets", ServeDir::new(&state.config.assets_root))
+        .nest_service("/assets", assets_service)
         .with_state(state.clone())
         .layer(TraceLayer::new_for_http())
-        .layer(CompressionLayer::new());
+        .layer(CompressionLayer::new())
+        .layer(SetResponseHeaderLayer::overriding(
+            CACHE_CONTROL,
+            HeaderValue::from_static("public, max-age=86400, immutable"),
+        ));
 
     let socket = SocketAddrV4::new(Ipv4Addr::new(0, 0, 0, 0), state.config.port);
     info!("Serving Karnaugh on socket {}", socket);