Fastify
Fastify

97
141
+ 1
48
Koa
Koa

366
301
+ 1
11
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Fastify vs Koa: What are the differences?

What is Fastify? Fast and low overhead web framework, for Node.js. 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%.

What is Koa? 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.

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

Some of the features offered by Fastify are:

  • 100% asynchronous: all the core is implemented with asynchronous code, in this way not even a millisecond is wasted.
  • Highly performant: as far as we know, Fastify is one of the fastest web frameworks in town, depending on the code complexity we can serve up to 20000 request per second.
  • Extendible: Fastify is fully extensible via its hooks, plugins and decorators.

On the other hand, Koa provides the following key features:

  • Provides 3 different kinds of functions as middleware
  • common function
  • async function

Fastify and Koa are both open source tools. Koa with 26.4K GitHub stars and 2.4K forks on GitHub appears to be more popular than Fastify with 11K GitHub stars and 674 GitHub forks.

Hostr, Dial Once, and Pubu are some of the popular companies that use Koa, whereas Fastify is used by OTOBANK, Distopik, and Detroit Technical English. Koa has a broader approval, being mentioned in 43 company stacks & 30 developers stacks; compared to Fastify, which is listed in 5 company stacks and 7 developer stacks.

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What is 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%.

What is Koa?

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.
What companies use Fastify?
What companies use Koa?

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What tools integrate with Fastify?
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What are some alternatives to Fastify and Koa?
Restify
A Node.js web service framework optimized for building semantically correct RESTful web services ready for production use at scale. it optimizes for introspection and performance.
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.
Go
Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.
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.
NestJS
Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript (preserves compatibility with pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming). Under the hood, Nest makes use of Express, but also, provides compatibility with a wide range of other libraries, like e.g. Fastify, allowing for easy use of the myriad third-party plugins which are available.
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