Hi,

I am trying to cache files "forever". Unfortunately in about 2-6 hours the cache starts to return MISS again. This is the setting:

---

proxy_cache_path /var/cache/nginx-cache levels=1:2 keys_zone=mycache:10m max_size=20g inactive=10y;

proxy_cache_valid 10y;

"Expires" header returned by the upstream is set to the year 2027 and "Cache-Control" to max-age=315360000 (i.e. 10 years).

---

I suppose, if was the expiry time the reason, it would have return EXPIRED, but not MISS.

The cache fills up to ~5 GB (from allowed 20 GB), so the space should not be the problem.

I have tried to remove all cached files and restart nginx, but it did not help.

For testing I use plain curl GET requests (without ETag, Vary, etc. headers) - always the same.

Thank you for any hint,
Jan Molic
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