nginx的作用

https://www.cnblogs.com/dongye95/p/11059024.html

1 反向代理

server {  
        listen       80;                                                         
        server_name  localhost;                                               
        client_max_body_size 1024M;

        location / {
            proxy_pass http://localhost:8080;
            proxy_set_header Host $host:$server_port;
        }
}

这样当访问localhost的时候，就相当于访问localhost:8080了

 

2  负载均衡

upstream test {
        server localhost:8080;
        server localhost:8081;
}
server {
　　listen       81;                                                         
　　server_name  localhost;                                               
　　client_max_body_size 1024M;

　　location / {
　　　　proxy_pass http://test;
　　　　proxy_set_header Host $host:$server_port;
　　}
}

3 HTTP服务器

  静态资源服务器

  动静分离

upstream test{  
       server localhost:8080;  
       server localhost:8081;  
    }   

    server {  
        listen       80;  
        server_name  localhost;  

        location / {  
            root   e:\wwwroot;  
            index  index.html;  
        }  

        # 所有静态请求都由nginx处理，存放目录为html  
        location ~ \.(gif|jpg|jpeg|png|bmp|swf|css|js)$ {  
            root    e:\wwwroot;  
        }  

        # 所有动态请求都转发给tomcat处理  
        location ~ \.(jsp|do)$ {  
            proxy_pass  http://test;  
        }  

        error_page   500 502 503 504  /50x.html;  
        location = /50x.html {  
            root   e:\wwwroot;  
        }  
    }

正向代理

resolver 114.114.114.114 8.8.8.8;
    server {

        resolver_timeout 5s;

        listen 81;

        access_log  e:\wwwroot\proxy.access.log;
        error_log   e:\wwwroot\proxy.error.log;

        location / {
            proxy_pass http://$host$request_uri;
        }
    }