Nginx 反向代理并缓存及缓存清除

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
worker_connections  1024;
}

http {
log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"'
'$upstream_addr $upstream_status $request_time $upstream_response_time';

access_log  /var/log/nginx/access.log main;
error_log   /var/log/nginx/error.log;

server_tokens off;
include       mime.types;
default_type  application/octet-stream;
sendfile        on;
tcp_nopush      on;
client_max_body_size 10m;
client_body_buffer_size 128k;

proxy_connect_timeout 300;
proxy_send_timeout 300;
proxy_read_timeout 300;
proxy_buffer_size 64k;
proxy_buffers 4 512k;
proxy_busy_buffers_size 512k;
proxy_temp_file_write_size 512k;
proxy_temp_path   /data/nginx/proxy_temp;
proxy_cache_path  /data/nginx/proxy_cache levels=1:2 keys_zone=cache_one:2000m inactive=3d max_size=500g;

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;

gzip  on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;

upstream go {
server www.cnblogs.com:80 weight=4;
#server 42.121.252.58:80 weight=4;
}

server {

listen    192.168.55.133:80;
#server_name  www.cnblogs.com;
access_log  /var/log/nginx/go.access.log main;
error_log   /var/log/nginx/go.error.log error;

location / {
proxy_cache cache_one;
#proxy_cache_valid  200 304 301 302 2h;
#proxy_cache_valid any 2h;
#expires 1d;
add_header X-Cache $upstream_cache_status;
proxy_pass  http://go; proxy_cache_key    $uri$is_args$args;
}

location ~ /purge(/.*) {
allow              127.0.0.1;
allow              192.168.55.0/24;
deny               all;
proxy_cache_purge  cache_one $1$is_args$args;
}

}
}