Nignx 缓存配置文件

proxy_cache.conf

user nginx nginx;
worker_processes 8;
error_log /var/log/nginx/error.log crit;
pid /var/run/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 65535;
events	{
    use epoll;
    worker_connections 65535;
}
http	{
    include mime.types;
    default_type application/octet-stream;
    charset utf-8;
    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 300m;
    sendfile on;
    tcp_nopush on;
    keepalive_timeout 60;
    tcp_nodelay on;
    client_body_buffer_size 512k;
    proxy_connect_timeout 5;
    proxy_read_timeout 60;
    proxy_send_timeout 5;
    proxy_buffer_size 16k;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size 128k;
    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;
    proxy_temp_path /var/lib/nginx/proxy_temp;
    proxy_cache_path /var/lib/nginx/proxy_cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=3g;
    upstream backend_server {
      server 192.168.17.151:8080 weight=1	max_fails=2	fail_timeout=30s;
    # server 192.168.17.152:8080 weight=1	max_fails=2	fail_timeout=30s;
	}
    server	{
        listen 80;
        server_name web01.ysten.com 192.168.17.150;
        index index.html index.htm;
	root /var/www;
	location /	{	
	#如果后端的服务器返回502、504、执行超时等错误，自动将请求转发到upstream负载均衡池中的另一台服务器，实现故障转移。
	proxy_next_upstream http_502 http_504 error timeout invalid_header;
	proxy_cache cache_one;
	#对不同的HTTP状态码设置不同的缓存时间
	proxy_cache_valid 200 304 12h;
	#以域名、URI、参数组合成Web缓存的Key值，Nginx根据Key值哈希，存储缓存内容到二级缓存目录内
	proxy_cache_key $host$uri$is_args$args;
	proxy_set_header Host $host;
	proxy_set_header X-Forwarded-For $remote_addr;
	proxy_pass http://backend_server;
    	expires 1d;
	}
	location ~ /purge(/.*)	{
		#设置只允许指定的IP或IP段输入正确的密码才可以清除URL缓存。(Nginx限制目录访问，可以用apache的htpasswd命令生成密钥文件，如：htpasswd -c /usr/local/nginx/conf/htpasswd adm_cache ，提示输入密码即可。)
		auth_basic "Please Insert User And Password";
		auth_basic_user_file /etc/nginx/conf/htpasswd;
		allow 127.0.0.1;
		allow 192.168.17.0/24;
		deny all;
		proxy_cache_purge cache_one $host$1$is_args$args;
	}
	location ~ .*\.(php|jsp|cgi)?$	{
		proxy_set_header Host $host;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_pass http://backend_server;
	}
    }
	log_format access '$remote_addr – $remote_user[$time_local] "$request" '
			'$status $body_bytes_sent "$http_referer" '
			'"$http_user_agent" $http_x_forwarded_for';
	access_log /var/log/nginx/access.log access;
	#$upstream_cache_status表示资源缓存的状态，有HIT MISS EXPIRED三种状态
	add_header X-Cache $upstream_cache_status;
}