proxy_cache是Nginx自带的内置缓存模块,配置一下就可以用了,看下面的配置
vi /usr/local/Nginx/conf/Nginx.conf
user zhangy users; worker_processes 10; error_log /var/vlogs/Nginx_error.log crit; pid /var/vlogs/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 gb2312; server_names_hash_bucket_size 128; client_header_buffer_size 32k; large_client_header_buffers 4 32k; client_max_body_size 8m; sendfile on; tcp_nopush on; keepalive_timeout 60; tcp_nodelay on; fastcgi_connect_timeout 300; fastcgi_send_timeout 300; fastcgi_read_timeout 300; fastcgi_buffer_size 64k; fastcgi_buffers 4 64k; fastcgi_busy_buffers_size 128k; fastcgi_temp_file_write_size 128k; //============ 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; proxy_temp_path /usr/local/Nginx/proxy_temp; /*levels设置目录层次 keys_zone设置缓存名字和共享内存大小 inactive在指定时间内没人访问则被删除在这里是1天 max_size最大缓存空间*/ proxy_cache_path /usr/local/Nginx/proxy_cache levels=1:2 keys_zone=content:20m inactive=1d max_size=100m; //============等号中间要加的,关键只要加上proxy_cache_path gzip on; gzip_min_length 1k; gzip_buffers 4 16k; gzip_http_version 1.0; gzip_comp_level 2; gzip_types text/plain application/x-javascript text/css application/xml; gzip_vary on; upstream myselfxtajmd { server 127.0.0.1:10002; server 127.0.0.1:10001 weight=5; } server { listen 10000; server_name localhost; index index.html index.htm index.PHP; 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/test.log access; location / { proxy_cache content; //根keys_zone后的内容对应 proxy_cache_valid 200 304 301 302 10d; //哪些状态缓存多长时间 proxy_cache_valid any 1d; //其他的缓存多长时间 proxy_cache_key $host$uri$is_args$args; //通过key来hash,定义KEY的值 proxy_pass http://myselfxtajmd; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } //动态的放过 location ~ .*\.(PHP|jsp|cgi)?$ { proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; proxy_pass http://myselfxtajmd; } } }
上面只是配置的部分内容,反向代理的那部分没有放进去了,参考linux下nginx反向代理,实现负载均衡,当我们浏览http://localhost:10000/222.jpg时,在代理端就把图片缓存了,不用到代理终端去缓存了,可以节省资源。缓存的内容放在你设置的proxy_cache_path路径下面,看下图
第一层目录只有一个字符,是由levels=1:2设置,总共二层目录,子目录名字由二个字符组成。突然发现,我在我的系统里面,配置过varnish,squid,apache和mod_cache,Nginx和proxy_cache,他们都是可以对文件进行缓存,不知道他们哪一个对文件的缓存效果最好呢?有空比较一下,对了这4种缓存,这个博客里面都有的,有兴趣的朋友,可以看一下