Aspects


vs


Express

Express is a minimal and flexible Node.js web application framework, providing a robust set of features for building web applications

Koa

Koa is a new web framework designed by the team behind Express, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs

Others

Quality Example
Req.header authorization

"I should also say that i have the token at ctx.request.get authorization koa based i think it s something like req.header authorization with express in all routes"

from question "Passport-jwt authenticate not working well with node-jwt-simple"

Less hacky

"Koa middleware is much simpler and less hacky than express middleware due to the way middleware flows in a stack-like manner"

from question "Which will be better for API creation - RESTify or KOA.js"

More low level

"Koa doesn t provide this kind of thing out of the box - it s designed to be a little more low level than express"

from question "Expressjs to Koajs - routing and templates?"

Faster

"It shows that koa is faster then other framework but as this question is about express and restify express is faster than restify"

from question "Why should I use Restify?"

Better

"See this blog when you have 10000 request koa performs better than express"

from question "Which will be better for API creation - RESTify or KOA.js"

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