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ExpressJS vs Koa: What are the differences?
Developers describe ExpressJS as "Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple". Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications. On the other hand, Koa is detailed as "Next generation web framework for node.js". Koa aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware.
ExpressJS and Koa can be categorized as "Microframeworks (Backend)" tools.
Some of the features offered by ExpressJS are:
- Robust routing
- HTTP helpers (redirection, caching, etc)
- View system supporting 14+ template engines
On the other hand, Koa provides the following key features:
- Provides 3 different kinds of functions as middleware
- common function
- async function
ExpressJS and Koa are both open source tools. It seems that ExpressJS with 44.6K GitHub stars and 7.48K forks on GitHub has more adoption than Koa with 26.6K GitHub stars and 2.42K GitHub forks.
According to the StackShare community, ExpressJS has a broader approval, being mentioned in 854 company stacks & 788 developers stacks; compared to Koa, which is listed in 44 company stacks and 31 developer stacks.
Pros of ExpressJS
- Simple378
- Node.js333
- Javascript242
- High performance192
- Robust routing150
- Middlewares71
- Open source70
- Great community57
- Hybrid web applications37
- Well documented13
- Rapid development9
- Sinatra inspired9
- Isomorphic js.. superfast and easy7
- Socket connection6
- Light weight5
- Npm4
- Resource available for learning4
- Event loop3
- Callbacks3
- Data stream2
Pros of Koa
- Async/Await6
- JavaScript5
- REST API1
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Cons of ExpressJS
- Not python27
- Overrated17
- No multithreading14
- Javascript9
- Not fast5
- Easily Insecure for Novices2
Cons of Koa
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What is ExpressJS?
What is Koa?
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