Merge pull request #278380 from DeeUnderscore/fix/nginx-etag

nginx: change etags for statically compressed files served from store

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/packages/nginx.section.md b/doc/packages/nginx.section.md
index 0704b534e5f7..41241304ceff 100644
--- a/doc/packages/nginx.section.md
+++ b/doc/packages/nginx.section.md
@@ -8,4 +8,4 @@ HTTP has a couple of different mechanisms for caching to prevent clients from ha
 
 Fortunately, HTTP supports an alternative (and more effective) caching mechanism: the [`ETag`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag) response header. The value of the `ETag` header specifies some identifier for the particular content that the server is sending (e.g., a hash). When a client makes a second request for the same resource, it sends that value back in an `If-None-Match` header. If the ETag value is unchanged, then the server does not need to resend the content.
 
-As of NixOS 19.09, the nginx package in Nixpkgs is patched such that when nginx serves a file out of `/nix/store`, the hash in the store path is used as the `ETag` header in the HTTP response, thus providing proper caching functionality. This happens automatically; you do not need to do modify any configuration to get this behavior.
+As of NixOS 19.09, the nginx package in Nixpkgs is patched such that when nginx serves a file out of `/nix/store`, the hash in the store path is used as the `ETag` header in the HTTP response, thus providing proper caching functionality. With NixOS 24.05 and later, the `ETag` additionally includes the response content length, to ensure files served with static compression do not share `ETag`s with their uncompressed version. This `ETag` functionality is enabled automatically; you do not need to do modify any configuration to get this behavior.