docs: clarify image cache invalidation behavior

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xfy 2026-06-17 14:22:20 +08:00
parent dc7eb77fad
commit 2d45e0991b

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@ -26,7 +26,8 @@ DB_POOL_SIZE=20
# SSR page cache duration in seconds (default: 3600)
SSR_CACHE_SECS=3600
# Image serving cache headers
# Image serving cache headers (hardcoded defaults)
# 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.
# To invalidate a cached raw upload, change its file path.
# To refresh a processed variant, change its processing parameters.