未加星标

How to gracefully shutdown Nodejs server

字体大小 | |
[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二04 | 时间 2016 | 作者 红领巾 ] 0人收藏点击收藏

In this post we will be discussing about gracefully shutting down Nodejs server. When you shutdown a server there are exchange of protocol messages between two endpoints known as shutdown sequence. Shutdown sequence are of two types graceful and abortive.

Graceful shutdown are the one where any data that has been queued, prior to sending signal of shutdown, will be processed. Whereas in abortive shutdown any unsent data will be lost.

When abortive shutdown happens your application terminates imeediately before completion of any queued requets thus giving an horrible user experience. In the graceful shutdown server stops accepting new connections, it stops fulfilling new requests and complets the queued requests before shutting down.

In Node.js we can use generic signal called SIGTERM or SIGINT which is actually used for program termination. Using this generic signal we are actually asking the program to terminate and clean up the resources utilized by the program.

Code :

var http = require('http');


var app = http.createServer(function (req,res) {

console.log('Starting Server...');

res.writeHead(200, {'Content-Type': 'text/plain'});

setTimeout(function () {res.end('OK\n');}, 5000);

console.log('Written To Server');

});


// e.g. kill

process.on('SIGTERM', function() {

console.log('Closing Gracefully');

app.close();

process.exit();

});


//e.g. Ctrl + C

process.on('SIGINT', function() {

console.log('Closing Gracefully');

app.close();

process.exit();

});


app.listen(5000);
How to gracefully shutdown Nodejs server

Please Like and Share the Blog, if you find it interesting and helpful.

本文前端(javascript)相关术语:javascript是什么意思 javascript下载 javascript权威指南 javascript基础教程 javascript 正则表达式 javascript设计模式 javascript高级程序设计 精通javascript javascript教程

主题: Node.jsHead
分页:12
转载请注明
本文标题:How to gracefully shutdown Nodejs server
本站链接:http://www.codesec.net/view/483900.html
分享请点击:


1.凡CodeSecTeam转载的文章,均出自其它媒体或其他官网介绍,目的在于传递更多的信息,并不代表本站赞同其观点和其真实性负责;
2.转载的文章仅代表原创作者观点,与本站无关。其原创性以及文中陈述文字和内容未经本站证实,本站对该文以及其中全部或者部分内容、文字的真实性、完整性、及时性,不作出任何保证或承若;
3.如本站转载稿涉及版权等问题,请作者及时联系本站,我们会及时处理。
登录后可拥有收藏文章、关注作者等权限...
技术大类 技术大类 | 前端(javascript) | 评论(0) | 阅读(32)