1. Nginx application

Nginx is a very good HTTP service software

Supports responses up to 50,000 concurrent connections
Possess powerful static resource processing capabilities
run smoothly
Very low consumption of system resources such as memory and CPU

At present, many large websites use the Nginx server as the reverse proxy and load balancer of the back-end website program to improve the load concurrency of the entire site.

1.1 Nginx load balancing implementation principle

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The main parameters of Nginx configuration reverse proxy

upstream service pool name { }
- Configure a pool of backend servers to serve response data
proxy_pass http://service pool name
- Configure server processing that forwards access requests to the backend server pool

1.2 Nginx Dynamic and Static Separation Realization Principle

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The principle of dynamic and static separation:
the server receives requests from the client, both static resources and dynamic resources, both static resources and dynamic resources, static resources are served by Nginx, and dynamic resources are forwarded to the backend by Nginx

Nginx static processing advantages:

The efficiency of Nginx in handling static pages is much higher than that of Tomcat

If Tomcat requests 1000 times, Nginx requests 6000 times

The throughput per second of Tomcat is 0.6M, and the throughput per second of Nginx is 3.6M

The ability of Nginx to handle static resources is 6 times that of Tomcat

2. Nginx+Tomcat load balancing, dynamic and static separation (seven-layer instance)

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Nginx server: 192.168.174.75
Tomcat server 1: 192.168.174.76:8080
Tomcat server 2: 192.168.174.74:8080 192.168.174.74:8081

Configure Tomcat server 1:
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vim index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP test3 page</title>
</head>
<body>
<% out.println("JSP动态页面 3");%>
</body>
</html>
~

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Configure Tomcat server 2:
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP test1 page</title>
</head>
<body>
<% out.println("JSP动态页面 1");%>
</body>
</html>

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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP test2 page</title>
</head>
<body>
<% out.println("JSP动态页面 2");%>
</body>
</html>

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Configure Nginx server:

vim nginx.repo

[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=0
enabled=1

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#定义后端服务器组的名称和节点配置
upstream backend_server {
    
    
         server 192.168.174.74:8080 weight=1;
         server 192.168.174.74:8081 weight=1;
         server 192.168.174.76:8080 weight=1;
}


#使用location匹配用户发来的.jsp动态页面请求给后端服务器组
    location ~* .*\.jsp$ {
    
    
             proxy_pass http://backend_server;
             #在转发报文里添加头部记录真实的客户端地址
             proxy_set_header HOST $host;
             proxy_set_header X-REAL-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     }

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Test the static page effect:
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Nginx+Tomcat load balancing, dynamic and static separation

Article directory

1. Nginx application

1.1 Nginx load balancing implementation principle

1.2 Nginx Dynamic and Static Separation Realization Principle

2. Nginx+Tomcat load balancing, dynamic and static separation (seven-layer instance)

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