docs: document image cache-control defaults

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xfy 2026-06-17 14:19:42 +08:00
parent abdfd2e3f9
commit dc7eb77fad

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@ -25,3 +25,8 @@ DB_POOL_SIZE=20
# SSR page cache duration in seconds (default: 3600)
SSR_CACHE_SECS=3600
# Image serving cache headers
# Uploaded image assets are served with Cache-Control: public, max-age=31536000, immutable.
# Processed variants (?w=, ?format=, etc.) are cached for 24 hours.
# To force browsers to refresh, change the URL or restart the server.