Can nginx proxy_cache replace fastcgi_cache?

adrelanos asked:

If nginx is already used with proxy_cache, is there still any need to use fastcgi_cache?

In other words.. When using nginx proxy_cache, there is no more need for fastcgi_cache?

My answer:

The caching mechanism is the same. The difference is that you must use proxy_cache directives if you are proxy_passing to a backend app, and you must use fastcgi_cache when you fastcgi_pass to a backend app.

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