proxy_cache_valid 200 1d;
proxy_cache_valid 404 15m;
# Serve stale cache on errors or if updating
- proxy_cache_use_stale error timeout updating http_500 http_503 http_504;
+ proxy_cache_use_stale error timeout updating http_404 http_500 http_503 http_504;
# If in cache as stale, serve stale and update in background
proxy_cache_background_update on;
# Enable revalidation using If-Modified-Since and If-None-Match for stale items