pm 是一个轻量级的Node.js多进程管理器，基于之前的node-cluster重构而来，在淘宝内部的生产系统中得到了广泛的应用.
- 基于 master + worker 模式，master负责进程管理，worker 处理业务逻辑，有效利用现代服务器的多CPU;
- 同一 master 可管理多种类型的worker, 并且支持在不同类型的 worker 之间进行轻量的消息传递;
- 同一类型的 worker ，对于TCP请求，采用抢占式的方式进行负载均衡；
- 平滑退出和 不退出前提下的 worker 进程重载 (reload).
- Visit the wiki page to get more infomation about
pm. - Also, we supply demo scripts in the code directory demo.
$ npm install pm$ siege -b -c100 -t 60S http://172.0.0.2:33749/- QPS (only one child, http server, response req.url) (node0.6.17):
| CASE | Closed | KeepAlive |
|---|---|---|
| pm2.0 | 5600 | 10553 |
| pm1.0 | 5231 | 10388 |
| node | 5481 | 10126 |
- in
master.js, run as master:
var app = require('pm').createMaster({
'pidfile' : '/tmp/demo.pid',
});
app.register('group1', __dirname + '/http.js', {
'listen' : [8080, 8081]
});
app.on('giveup', function (name, num, pause) {
// YOU SHOULD ALERT HERE!
});
app.dispatch();- in
http.js, run as worker:
var http = require('http').createServer(function (req, res) {
res.end('hello world');
});
require('pm').createWorker().ready(function (socket, port) {
http.emit('connection', socket);
});Thanks goes to the people who have contributed code to this module, see the GitHub Contributors page.
Below is the output from git-summary
project: pm
commits: 91
files : 27
authors:
86 aleafs 94.5%
4 wanglang 4.4%
1 fengmk2 1.1%
pm is published under MIT license.
See license text in LICENSE file.