node.js – 使用NGINX对多个节点服务器进行负载均衡请求流量

You should run multiple Node servers on one box, 1 per core and split request traffic between them. This provides excellent CPU-affinity and will scale throughput nearly linearly with core count.

知道了,所以让我们说我们的盒子有2个核心以简化.

我需要一个完整的例子,一个Hello World应用程序使用NGINX在两个Node服务器之间进行负载平衡.

这应包括任何NGINX配置.

var http = require('http');
var port = parseInt(process.argv[2]);

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello World\n');
}).listen(port);

console.log('Server running at http://localhost:' + port + '/');

nginx配置

upstream app  {
  server localhost:8001;
  server localhost:8002;
}

server {
  location / {
    proxy_pass  http://app;
  }
}

启动您的应用

node app.js 8001
node app.js 8002

HttpUpstreamModule documentation

附加阅读材料

> cluster module – 仍然是实验性的,但你不需要nginx
> forever module – 万一您的应用程序崩溃
> nginx and websockets – 如何在新的nginx版本中代理websockets