Use Nginx for NodeJS Application Load balancing

: This article mainly introduces how to use Nginx for NodeJS application load balancing. For more information about PHP tutorials, see. Load balancing for NodeJS applications using Nginx

Author: chszs, reprinted with note. Blog Homepage: http://blog.csdn.net/chszs

Server load balancer distributes user requests to multiple servers for processing, so as to support access to massive users. Server load balancer architecture:

For complex Web applications, using Nginx for front-end load balancing is a matter of course.

Next, we use Nginx for NodeJS application load balancing.

1. Configure Nginx

Modify nginx. conf:

....        upstream sample {      server 127.0.0.1:3000;      server 127.0.0.1:3001;      keepalive 64;    }         server {        listen 80;        ....            server_name 127.0.0.1;        ....            location / {               proxy_redirect off;               proxy_set_header X-Real-IP $remote_addr;               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;               proxy_set_header X-Forwarded-Proto $scheme;               proxy_set_header Host $http_host;               proxy_set_header X-NginX-Proxy true;               proxy_set_header Connection "";               proxy_http_version 1.1;               proxy_pass http://sample;           }        }

Each of port 3000 and Port 3001 has a Node. js server, which is doing the same job. In the upstream section, two Node. js servers are configured. In addition, we also set proxy_pass http: // sample as the HTTP request proxy.

2. build a NodeJS server

var http = require('http');var morgan       = require('morgan');var server1 = http.createServer(function (req, res) {  console.log("Request for:  " + req.url + "-- port 3000 ");  res.writeHead(200, {'Content-Type': 'text/plain'});  res.end('Hello Node.js\n');}).listen(3000, "127.0.0.1");var server2 = http.createServer(function (req, res) {  console.log("Request for:  " + req.url + "-- port 3001 ");  res.writeHead(200, {'Content-Type': 'text/plain'});  res.end('Hello Node.js\n');}).listen(3001, "127.0.0.1");server1.once('listening', function() {  console.log('Server running at http://127.0.0.1:3000/');});server2.once('listening', function() {  console.log('Server running at http://127.0.0.1:3001/');});

3. access the Nginx server

Now we can access http: // 127.0.0.1

The following output is displayed:

  Server running at http://127.0.0.1:3000/  Server running at http://127.0.0.1:3001/  Request for:  /-- port 3001   Request for:  /favicon.ico-- port 3000   Request for:  /favicon.ico-- port 3001   Request for:  /-- port 3000   Request for:  /favicon.ico-- port 3001   Request for:  /favicon.ico-- port 3000   Request for:  /-- port 3001   Request for:  /favicon.ico-- port 3000   Request for:  /favicon.ico-- port 3001   Request for:  /-- port 3000   Request for:  /favicon.ico-- port 3001   Request for:  /favicon.ico-- port 3000 

The above describes how to use Nginx for NodeJS application load balancing, including some content, and hope to be helpful to friends who are interested in PHP tutorials.