毕业论文翻译_Nodejs 框架比较.docxVIP

Node.js Framework Comparison: Express vs. Koa vs. HapiJonathan GlockJonathan works as a full stack engineer using JavaScript such as Node, JQuery, Angular, Backbone, and Mongodb. He also is using the Microsoft stack (ASP.NET, C#, EF, and SQL).1 IntroductionExpress.js is the most popular Node.js web application framework used today. It seems to be the base dependency in most Node.js web applications, even some popular frameworks like Sails.js are built off of Express. However there are more options available that have the same sinatra-like feel to them. The next two most popular frameworks are Koa and Hapi respectively.This is not going to persuade you to use one framework over the other, its merely going to help you get a better understanding of what each framework can do and where one might trump the other.2 Framework backgroundsAll three of the frameworks we will be looking at have a lot in common. All can create a server with just a few lines of code and all make creating a REST API very simple. Lets look at how these frameworks began.2.1 ExpressThe initial commit for Express was made on June 26, 2009 by TJ Holowaychuk and 660 commits later version 0.0.1 was released on January 2, 2010. The two main contributors at that time were TJ and Ciaron Jessup. At the time of the first release the framework was described as per the readme.md on githubInsanely fast (and small) server-side JavaScript web development framework built on?node.js?and?V8 JavaScript engine.Fast forward almost 5 years and 4,925 commits, now 4.10.1 is the latest version maintained by StrongLoop as TJ is now concentrating in the Go-Lang community.2.2 KoaThe initial commit for Koa was just over a year ago on August 17, 2013 by none other than TJ Holowaychuk. He describes it as Expressive middleware for node.js using generators via?co?to make writing web applications and REST APIs more enjoyable to write. Koa is advertised as having a small footprint of ~400 SLOC. It is now on version 0.13.0 with 585 c