Here’s the Deal

Derby vs Koa

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When comparing Derby vs Koa, the Slant community recommends Derby for most people. In the question“What are the best full-stack Node.js frameworks?” Derby is ranked 7th while Koa is ranked 8th. The most important reason people chose Derby is:

Derby enables the client and server to sync models across the board in real-time.

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Common Questions

What are the best full-stack Node.js frameworks?

Pros

Pro
Real time communication between server and client

Derby enables the client and server to sync models across the board in real-time.

Pro
Views are rendered on the server

Derby renders it's client-side views on the server. This means that there's no "delay" in serving the content to the browser when the user requests it. It's also very helpful for SEO purposes.

Pro
Same code can be run on the client and server

The same code can be run on both the server and the client, because Derby is a full-stack JavaScript-everywhere platform.

Pro
Generator support from ground up

Using generators (a bleeding edge feature, even for Node.js) would clean up your code from the mess caused by all those callbacks; making your code more manageable.

Pro
Extremely lightweight

Koa is very lightweight with just 550 lines of code.

Pro
async/await keywords are supported and has transcended beyond generator functions

Generators functions are of course a huge plus, but at the time Koa team has transcended generations functions and shifted towards async/await style programming. It has made the Koa best framework available in the market.

Pro
Development team has a proven track record

Koa is developed by the team behind a widely used node.js framework (express.js).

Pro
Built for ES6

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Cons

Con
Small community

Derby seems to have a small community of followers, at least compared to other Node full-stack frameworks. So it could be difficult for a beginner to find examples or help if they get stuck somewhere in their development.