Is there more introduction to the relevant cache?

[rustxj]

Hi,

I want to implement the CDN simply. Is there a more detailed description of the cache, such as disk size, cache time, cache algorithm, etc.

[duy13]

    proxy_cache_valid 15m;
    proxy_cache_valid 404 1m;
    proxy_no_cache $no_cache;
    proxy_cache_bypass $no_cache;
    proxy_cache_bypass $cookie_session $http_x_update;