NestJS Platforms: Express vs. Fastify

Learn and practice using Fastify in NestJS and understand the differences from Express.

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NestJS platforms

NestJS uses Express as the underlying platform by default but can also work with other NodeJS HTTP frameworks. This is because NestJS implements a framework adapter that abstracts away the platform-specific details in middleware and request handling.

The out-of-the-box alternative framework is Fastify. Fastify is known for its exceptional speed and low overhead, making it a great choice for high-performance applications. On the other hand, Express has a robust ecosystem and is widely adopted, making it suitable for a wide range of use cases.

Use Fastify in NestJS

To use Fastify, we need to install the following package:

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