... and set immutable

Author: matze

CHANGELOG.md

@@ -25,7 +25,7 @@
 - Use the [two-face](https://docs.rs/two-face) crate for an extended syntax
   list.
 - Serve all CSS assets under hashed URL to avoid caching issues and set
-  cache-control header to one month.
+  cache-control header to one month and the `immutable` attribute.
 - Do not offer any interactions for burn-after-reading pastes that will end up
   with a 404 anyway.
 

src/assets.rs

@@ -34,7 +34,9 @@ impl IntoResponse for Asset {
         let headers = (
             TypedHeader(content_type_header),
             TypedHeader(
-                headers::CacheControl::new().with_max_age(Duration::from_secs(60 * 60 * 24 * 30)),
+                headers::CacheControl::new()
+                    .with_max_age(Duration::from_secs(60 * 60 * 24 * 30))
+                    .with_immutable(),
             ),
         );