请参考官方：

http://wiki.nginx.org/HttpRewriteModule#Synopsis

关于缓存大小权限

error log 有如下日志：an upstream response is buffered to a temporary file，

注意：当临时文件提示没有权限写时，发发送给客户端只接收到的这部分数据。

        fastcgi_buffer_size         512k;
        fastcgi_buffers             6 512k;
        fastcgi_busy_buffers_size   512k;
        fastcgi_temp_file_write_size        512k;

默认的vhost

        listen 80 default_server;
        server_name  _;

增加Nginx请求缓存

location =/test_oss/cgi_interface/get_rs_proxy_by_domain.php {
                add_header X-Location cae_data_cache;
                add_header X-Cached $upstream_cache_status;

                fastcgi_cache fcgi_cache;
                fastcgi_cache_key "$request_method$uri$is_args$arg_domain$arg_city";
                fastcgi_cache_valid 200 3m;
                fastcgi_cache_min_uses 1;
                fastcgi_cache_use_stale error timeout invalid_header http_500;
                fastcgi_temp_path /tmp/ngx_fcgi_tmp;

                include fastcgi.conf;
                fastcgi_pass unix:/dev/shm/cae_webdev.socket;
        }

默认均匹配

       location / {
                include fastcgi.conf;
                fastcgi_pass unix:/dev/shm/cae_webdev.socket;
        }

TCP相关

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_requests 64;
        keepalive_timeout  10;

PHP HHVM容错配置

        location ~ \.php$ {
                include fastcgi.conf;
                fastcgi_pass 127.0.0.1:9090;
                #for 500/502 error change it to php-fpm
                error_page 500 502 = @fallback_fpm;
        }

        location @fallback_fpm {
                include fastcgi.conf;
                fastcgi_pass unix:/dev/shm/cweb_php.socket;
        }

重定向配置

        if (!-e $request_filename) {
                 rewrite ^(.*)$ /index.php?$1 last;
        }
        try_files $uri /index.php$is_args$args;

• 注意尽量不要用if
• rewrite不改变当前$uri的值，也就是多个rewrite时，$uri的值始终只有初始一个
• try_files会修改全局变量$uri的值
• location是有顺序的，rewrite的优先级可以认为比location高