利用nginx做本地缓存或CDN加速 - 陈欢博客

现在很多网站都用nginx做本机加速，降低磁盘读写，或者是nginx扮演反向代理的角色，可以减低后端服务器的压力。
在cdn中，很多厂商，比如360加速乐、阿里云cdn都是用nginx(或者Tengine)实现。

下面是一个简单的配置实例，实现用nginx加速。

用一台机器做cdn，源站ip为: 42.96.158.236 cdn服务器ip为：42.62.73.54 。因用于测试直接在cdn服务器上安装epel源，yum安装nginx，省去编译麻烦。

cdn nginx主配置文件：

									user nginx;
								
									worker_processes 1;
								
									error_log /var/log/nginx/error.log;
								
									pid /var/run/nginx.pid;
								
									events {
								
									 worker_connections 1024;
								
									}
								
									http {
								
									 include /etc/nginx/mime.types;
								
									 default_type application/octet-stream;
								
									 log_format main '$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 main;
								
									 sendfile on;
								
									 keepalive_timeout 65;
								
									### cdn head ###
								
									 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;
								
									 proxy_temp_path /home/temp_dir;
								
									 proxy_cache_path /home/cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=10g;
								
									 include /etc/nginx/conf.d/*.conf;
								
									### cdn end ###
								
									}

虚拟主机配置文件：

									upstream web {
								
									 server 42.96.158.236 max_fails=3 fail_timeout=20s;
								
									}
								
									server {
								
									 listen 80;
								
									 server_name www.rootop.org;
								
									 location ~ .*\.(gif|jpg|png|htm|html|css|js|flv|ico|swf)(.*) {
								
									 proxy_pass http://web;
								
									 proxy_redirect off;
								
									 proxy_set_header Host $host;
								
									### cdn head ###
								
									 proxy_cache cache_one;
								
									 proxy_cache_valid 200 302 1h;
								
									 proxy_cache_valid 301 1d;
								
									 proxy_cache_valid any 1m;
								
									 add_header Cache "$upstream_cache_status";
								
									### cdn end ###
								
									 expires 30d;
								
									 }
								
									location / {
								
									 proxy_pass http://web;
								
									 proxy_set_header Host $host;
								
									 proxy_set_header X-Real-IP $remote_addr;
								
									 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
								
									 }
								
									}