proxy_cache skynet;
slice 1m;
proxy_http_version 1.1; # upgrade if necessary because 1.0 does not support byte-range requests
proxy_set_header Range $slice_range; # pass slice range to proxy
proxy_cache_key $subdomain$uri$slice_range; # include both the $subdomain and $slice_range in the cache key
proxy_cache_min_uses 3; # cache responses after 3 requests of the same file
proxy_cache_valid 200 206 24h; # cache 200 and 206 responses for 24 hours
proxy_cache_bypass $cookie_nocache $arg_nocache; # add cache bypass option
add_header X-Proxy-Cache $upstream_cache_status; # add response header to indicate cache hits and misses