# 在http头部显示命中方式
location ~* ^.*\.(js|ico|gif|jpg|jpeg|png)$ {
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 180;
proxy_send_timeout 180;
proxy_read_timeout 180;
proxy_buffer_size 128k;
proxy_buffers 4 128k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
proxy_cache cache;
proxy_cache_valid 200 304 1h;
proxy_cache_valid 404 1m;
proxy_cache_key $host$uri$is_args$args;
add_header Nginx-Cache "$upstream_cache_status";
proxy_pass http://backend;
}
log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" "$request_body" '
'"$http_user_agent" "$http_x_forwarded_for"'
'cache_status:$upstream_cache_status upstream:$upstream_addr '
'response_time: $request_time response_time: $request_time host: $host';
#日志缓存命中率:
MISS : 未命中,请求被传送到后台处理
HIT: 缓存命中
EXPIRED: 缓存已经过期,请求被传送到后台处理
UPDATING: 正在更新缓存,将使用旧的应答
STALE: 后端得到过期的应答