I have been trying to find a good and standard way of invalidating nginx fastcgi cache. Some time ago we had the fastcgi_cache_bypass filter which was not completely implemented and didn't work (and has been removed from the wiki since). Now the only option seems to be fastcgi_no_cache.

Is there a way to cache that fresh response from the backend when fastcgi_no_cache is 1?

Like this:

1. Nginx receives a request with fastcgi_no_cache 1
2. Nginx skips cache and returns a fresh response from the backend
3. Nginx stores that response in the cache
4. All of the subsequent requests when fastcgi_no_cache 0 (with the same cache_key) return that latest cached response.

Kaspars