nginx静态资源缓存服务器

nginx静态资源缓存服务器

静态资源指的就是网站中固定的文本,图片这些一旦确定就不会变化的文件; 而在反向代理中缓存住这些文件的话, 可以加快用户访问网站的速度;

• nginx的ngx_http_proxy_module中的proxy_cache指令来实现缓存的加载和命中;
• nginx的ngx_http_proxy_module中的proxy_cache_path指令来定义缓存的存储位置及超时清理时限;

通过使用ngx_http_gzip_module和ngx_http_gunzip_module两个模块来加速缓存的传输, 尤其是采用https协议时, 加速效果是很明显的;

user  nginx;
worker_processes  1;
error_log  logs/error.log;
pid        logs/nginx.pid;

events {
    use epoll;
    worker_connections  1024;
}

http {
    include       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  logs/access.log  main;
    sendfile        on;
    tcp_nopush     on;
    keepalive_timeout  65;
  
    upstream webserver {
        server 192.168.123.12;
        server 192.168.123.13;
    }
    
    proxy_cache_path /var/cache/nginx/picture levels=1:1:2  keys_zone=picture:10m max_size=10g inactive=60m;

    server {
        listen       80;
        server_name  www.daemons.com;
        charset koi8-r;
        access_log  logs/host.access.log  main;
        error_log   logs/host.error.log;

        location / {
            proxy_set_header  Host  $host;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_pass    http://webserver;
        }
    
        location ~ \.(gif|jpg|jpeg|png|bmp|ico)$ {
            # ngx_http_header_module -->> add_header 添加响应头字段信息;
            add_header X-Cache $upstream_cache_status;
            proxy_cache picture;
            proxy_cache_key $host$uri$is_args$args;#以全路径md5值做做为Key
            proxy_cache_valid 200 304 12h; #对不同的HTTP状态码设置不同的缓存时间
            expires 7d; #总体缓存时间
            proxy_set_header Host  $host;
            proxy_set_header X-Forwarded-For  $remote_addr;
            proxy_pass http://webserver;
        }
    }
}