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+---
+synopsis: "HTTP binary caches now support transparent compression for metadata"
+prs: []
+---
+
+HTTP binary cache stores can now compress `.narinfo`, `.ls`, and build log files before uploading them,
+reducing bandwidth usage and storage requirements. The compression is applied transparently using the
+`Content-Encoding` header, allowing compatible clients to automatically decompress the files.
+
+Three new configuration options control this behavior:
+- `narinfo-compression`: Compression method for `.narinfo` files
+- `ls-compression`: Compression method for `.ls` files
+- `log-compression`: Compression method for build logs in `log/` directory
+
+Example usage:
+```
+nix copy --to 'http://cache.example.com?narinfo-compression=gzip&ls-compression=gzip' /nix/store/...
+nix store copy-log --to 'http://cache.example.com?log-compression=br' /nix/store/...
+```