nginx的文件cache服务配置记录（proxy_cache）

根据业务部门需求，申请一台文件的cache服务器。如下记录在单台机器上部署Nginx缓存服务过程：

nginx缓存配置（缓存配置的参数这里就不做过多解释了，在前面的文档中已说明过，这里只做简单记录）

[[email protected] ~]# cat /data/nginx/conf/nginx.conf|grep -v "^$"|grep -v "#"
user  www;
worker_processes  8;

events {
    worker_connections  65535;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    charset utf-8;

    log_format  main  ‘$http_x_forwarded_for $remote_addr $remote_user [$time_local] "$request" ‘
                      ‘$status $body_bytes_sent "$http_referer" ‘
                      ‘"$http_user_agent" "$http_cookie" $host $request_time‘;
    sendfile       on;
    tcp_nopush     on;
    tcp_nodelay    on;
    keepalive_timeout  65;

    proxy_temp_path /data/nginx/proxy_temp;
    proxy_cache_path /data/nginx/proxy_cache levels=1:2 keys_zone=cache_one:500m inactive=1d max_size=30g;

    client_header_timeout 600s;
    client_body_timeout 600s;

    client_max_body_size 50m;
    client_body_buffer_size 256k;           

    gzip  on;
    gzip_min_length  1k;
    gzip_buffers     4 16k;
    gzip_http_version 1.1;
    gzip_comp_level 9;
    gzip_types       text/plain application/x-javascript text/css application/xml text/javascript application/x-httpd-php;
    gzip_vary on;

    include vhosts/*.conf;
}

注意：缓存目录/proxy_cache和/proxy_temp一定要在同一个分区下，并且权限一定要和nginx程序权限一致(即要有写入权限，否则不能生产缓存文件)！
[[email protected] ~]# mkdir /data/nginx/proxy_cache
[[email protected] ~]# mkdir /data/nginx/proxy_temp
[[email protected] ~]# chown -R www.www /data/nginx/proxy_cache
[[email protected] ~]# chown -R www.www /data/nginx/proxy_temp   

[[email protected] ~]# cat /data/nginx/conf/vhosts/img.conf
server {
     listen       80;
     server_name  img.wang.com;

     access_log  /data/nginx/logs/img-access.log main;
     error_log  /data/nginx/logs/img-error.log;

     location / {
         index index.html index.htm;
         root /data/img/;
         proxy_cache cache_one ;
         proxy_cache_valid 200 304 12h ;
         proxy_cache_valid 301 302 1m ;
         proxy_cache_valid any 1m ;
         proxy_cache_key $host$uri$is_args$args;
        }

    location ~ /purge(/.*) {
      allow all ;
      proxy_cache_purge cache_one $host$1$is_args$args ;
      error_page 405 =200 /purge$1;
    }
}

[[email protected] ~]# /data/nginx/sbin/nginx -t
nginx: the configuration file /data/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /data/nginx/conf/nginx.conf test is successful
[[email protected] ~]# /data/nginx/sbin/nginx 

[[email protected] ~]# ll -d /data/img
drwxr-xr-x 3 www www 4096 Aug 21 10:06 /data/img
[[email protected] ~]# ll /data/img
total 8
drwxr-xr-x 2 www www 4096 Aug 21 10:30 image
-rwxr-xr-x 1 www www   31 Aug 16 15:44 index.html
[[email protected] ~]# ll /data/img/image/
total 20
-rwxr-xr-x 1 www www 19270 Aug 15 19:50 wang.png

[[email protected] ~]# cat /data/img/index.html
缓存服务器！！！！！

访问

查看缓存文件

[[email protected] ~]# ll /data/nginx/proxy_cache/
total 12
drwx------ 3 www www 4096 Aug 21 10:20 0
drwx------ 3 www www 4096 Aug 21 10:14 e
drwx------ 3 www www 4096 Aug 21 10:15 f
[[email protected] ~]# ll /data/nginx/proxy_cache/e
total 4
drwx------ 2 www www 4096 Aug 21 10:29 e3            

上面缓存文件的结构是由levels=1:2决定的，即第一层目录是一个字母命名，第二层目录是两个字母表示

清理缓存