Falcon vs Fastify: What are the differences?

Developers describe Falcon as "High-performance Python framework for building cloud APIs and web app backends". 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. On the other hand, Fastify is detailed as "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%.

Falcon and Fastify can be primarily classified as "Microframeworks (Backend)" tools.

Some of the features offered by Falcon are:

• Intuitive routing via URI templates and resource classes
• Easy access to headers and bodies through request and response classes
• Idiomatic HTTP error responses via a handy exception base class

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

• 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.

Falcon and Fastify are both open source tools. Fastify with 11.2K GitHub stars and 690 forks on GitHub appears to be more popular than Falcon with 6.8K GitHub stars and 707 GitHub forks.

HENNGE, Fivestars, and Vokal are some of the popular companies that use Falcon, whereas Fastify is used by OTOBANK, Distopik, and Detroit Technical English. Falcon has a broader approval, being mentioned in 7 company stacks & 7 developers stacks; compared to Fastify, which is listed in 5 company stacks and 7 developer stacks.