nginx优化配置说明

nginx 是一个高性能的http和反向代理 服务器，也是一个imap/pop3/smtp代理服务器

user ben woyoudever;#工作进程使用的用户和组worker_processes  10;#打开的工作进程数，应该是cpu的个数worker_rlimit_nofile 10240;#指定一个进程最多打开的文件数最好与ulimit -n 保持一致#error_log  logs/error.log;#error_log  logs/error.log  notice;#error_log  logs/error.log  info;#错误日志以及错误等级 [debug|info|notice|warn|error|crit]pid        logs/nginx.pid;#nginx主进程的pid数events {    #use [kqueue|rtsig|epoll|poll|select]    use epoll;#使用epoll网络 I/O模型    worker_connections  65535;#单个进程的最大连接数}http {    include       mime.types;#文件扩展名和文件类型映射表    default_type  application/octet-stream;#默认文件格式     charset  gb2312,utf-8;#默认编码    server_names_hash_bucket_size 128;#服务器名称的hash表大小    #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;    client_header_buffer_size 4K;#客户端头的缓冲区大小     open_file_cache max=10240 inactive=20s;#打开文件的缓冲    open_file_cache_valid 30s;#多久时间检查一下缓存的有效信息    open_file_cache_min_uses1;#最少使用次数    sendfile        on;#开启高效网络传输    tcp_nopush     on;        #防止网络阻塞    tcp_nodelay     on;    #keepalive_timeout  0;    keepalive_timeout  65;#keepalive超时时间    gzip  on;#是否开启压缩模块，要用到cpu    zip_min_length  1k;#最小压缩文件大小    gzip_buffers     4 16k;        #压缩缓冲区    gzip_http_version 1.0;#压缩版本    gzip_comp_level 2;    gzip_types       text/plain application/x-javascript text/css application/xml;#压缩的类型    gzip_vary on;    client_max_body_size 8m;        #上传文件大小限制    fastcgi_connect_timeout 300;#fastcgi连接超时时间    fastcgi_send_timeout 300;#发送超时时间    fastcgi_read_timeout 300;#读取超时时间    fastcgi_buffer_size 64k;#缓冲区大小     fastcgi_buffers 4 64k;#设置多大的缓冲区缓冲    fastcgi_busy_buffers_size 128k;    fastcgi_temp_file_write_size 128k;    fastcgi_cache TEST;#开启fastcgi缓存    fastcgi_cache_valid 200 302 1h;#200 302应答一个小是    fastcgi_cache_valid 301 1d;    fastcgi_cache_valid any 1m;    fastcgi_cache_min_uses 1;    upstream backend_server {#后端负载    #server   192.168.10.22:80 weight=1  max_fails=2 fail_timeout=30s;    server   192.168.10.27:80 weight=1  max_fails=2 fail_timeout=30s;    #server   192.168.10.20:80 weight=1  max_fails=2 fail_timeout=30s;    }    server {        listen       808;        server_name  localhost;#绑定的域名        #charset koi8-r;        #access_log  logs/host.access.log  main;        location / {            root   html;            index  index.html index.htm;        }        #error_page  404              /404.html;        # redirect server error pages to the static page /50x.html        #        error_page   500 502 503 504  /50x.html;        location = /50x.html {            root   html;        }        # proxy the PHP scripts to Apache listening on 127.0.0.1:80        #        #location ~ \.php$ {        #    proxy_pass   http://127.0.0.1;        #}        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000        #        #location ~ \.php$ {        #    root           html;        #    fastcgi_pass   127.0.0.1:9000;        #    fastcgi_index  index.php;        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;        #    include        fastcgi_params;        #}        # deny access to .htaccess files, if Apache's document root        # concurs with nginx's one        #        #location ~ /\.ht {        #    deny  all;        #}#查看nginx状态要添加 --with-http_stub_status_module模块location /nginxstatus{sub_status on;access_log on;}    }    # another virtual host using mix of IP-, name-, and port-based configuration    #    #server {    #    listen       8000;    #    listen       somename:8080;    #    server_name  somename  alias  another.alias;    #    location / {    #        root   html;    #        index  index.html index.htm;    #    }    #}    # HTTPS server    #    #server {    #    listen       443;    #    server_name  localhost;    #    ssl                  on;    #    ssl_certificate      cert.pem;    #    ssl_certificate_key  cert.key;    #    ssl_session_timeout  5m;    #    ssl_protocols  SSLv2 SSLv3 TLSv1;    #    ssl_ciphers  HIGH:!aNULL:!MD5;    #    ssl_prefer_server_ciphers   on;    #    location / {    #        root   html;    #        index  index.html index.htm;    #    }    #}}