Flask vs Koa

Overview

Flask

Stacks19.3K

Followers16.2K

Votes60

Koa

Stacks812

Followers483

Votes12

GitHub Stars35.7K

Forks3.2K

Flask vs Koa: What are the differences?

Developers describe Flask as "a microframework for Python based on Werkzeug, Jinja 2 and good intentions". Flask is intended for getting started very quickly and was developed with best intentions in mind. 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.

Flask and Koa can be categorized as "Microframeworks (Backend)" tools.

Flask and Koa are both open source tools. It seems that Flask with 45.2K GitHub stars and 12.7K forks on GitHub has more adoption than Koa with 26.6K GitHub stars and 2.42K GitHub forks.

Netflix, reddit, and Lyft are some of the popular companies that use Flask, whereas Koa is used by Hostr, Dial Once, and Pubu. Flask has a broader approval, being mentioned in 511 company stacks & 531 developers stacks; compared to Koa, which is listed in 44 company stacks and 31 developer stacks.

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Advice on Flask, Koa

Kristan Eres

Senior Solutions Analyst

Jul 30, 2020

Needs adviceon

Django

Python

Flask

My journey to developing REST APIs started with Flask Restful, and I've found it to be enough for the needs of my project back then. Now that I've started investing more time on personal projects, I've yet to decide if I should move to use Django for writing REST APIs. I often see job posts looking for Python+Django developers, but it's usually for full-stack developers. I'm primarily interested in Data Engineering, so most of my web projects are back end.

Should I continue with what I know (Flask) or move on to Django?

391k views391k

Comments

Saurav

Application Devloper at Bny Mellon

Mar 27, 2020

Needs advice

I have just started learning Python 3 weeks ago. I want to create a REST API using python. The API will be used to save form data in an Oracle database. The front end is using AngularJS 8 with Angular Material. In python, there are so many frameworks to develop REST APIs.

I am looking for some suggestions which REST framework to choose?

Here are some features I am looking for:

Easy integration and unit testing, like in Angular. We just want to run a command.
Code packaging, like in java maven project we can build and package. I am looking for something which I can push in as an artifact and deploy whole code as a package.
Support for swagger/ OpenAPI
Support for JSON Web Token
Support for test case coverage report

Framework can have features included or can be available by extension. Also, you can suggest a framework other than the ones I have mentioned.

337k views337k

Comments

Girish

Software Engineer at FireVisor Systems

Apr 17, 2020

Needs adviceon

Python

Nameko

RabbitMQ

Which is the best Python framework for microservices?

We are using Nameko for building microservices in Python. The things we really like are dependency injection and the ease with which one can expose endpoints via RPC over RabbitMQ. We are planning to try a tool that helps us write polyglot microservices and nameko is not super compatible with it. Also, we are a bit worried about the not so good community support from nameko and looking for a python alternate to write microservices.

310k views310k

Comments

Detailed Comparison

Flask	Koa
Flask is intended for getting started very quickly and was developed with best intentions in mind.	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.
-	Provides 3 different kinds of functions as middleware; common function; async function; generator function
Statistics
GitHub Stars -	GitHub Stars 35.7K
GitHub Forks -	GitHub Forks 3.2K
Stacks 19.3K	Stacks 812
Followers 16.2K	Followers 483
Votes 60	Votes 12
Pros & Cons
Pros 10 For it flexibility 9 Flexibilty and easy to use 7 User friendly 6 Secured 5 Unopinionated Cons 10 Not JS 7 Context 5 Not fast 1 Don't has many module as in spring	Pros 6 Async/Await 5 JavaScript 1 REST API
Integrations
No integrations available	Node.js

What are some alternatives to Flask, Koa?

ExpressJS

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.

Django REST framework

It is a powerful and flexible toolkit that makes it easy to build Web APIs.

Sails.js

Sails is designed to mimic the MVC pattern of frameworks like Ruby on Rails, but with support for the requirements of modern apps: data-driven APIs with scalable, service-oriented architecture.

Sinatra

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.

Lumen

Laravel Lumen is a stunningly fast PHP micro-framework for building web applications with expressive, elegant syntax. We believe development must be an enjoyable, creative experience to be truly fulfilling. Lumen attempts to take the pain out of development by easing common tasks used in the majority of web projects, such as routing, database abstraction, queueing, and caching.

Slim

Slim is easy to use for both beginners and professionals. Slim favors cleanliness over terseness and common cases over edge cases. Its interface is simple, intuitive, and extensively documented — both online and in the code itself.

Fastify

Fastify is a web framework highly focused on speed and low overhead. It is inspired from Hapi and Express and as far as we know, it is one of the fastest web frameworks in town. Use Fastify can increase your throughput up to 100%.

Falcon

Falcon is a minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks.

hapi

hapi is a simple to use configuration-centric framework with built-in support for input validation, caching, authentication, and other essential facilities for building web applications and services.

TypeORM

It supports both Active Record and Data Mapper patterns, unlike all other JavaScript ORMs currently in existence, which means you can write high quality, loosely coupled, scalable, maintainable applications the most productive way.