fastify
Fast and low overhead web framework, for Node.js
Fastify leads with a number: 76,000 requests per second
The Node.js framework's own claim, depending on code complexity, is throughput that can pass seventy six thousand requests per second. The rest of the pitch is about spending as little overhead as possible to get it.
The opening argument
Why care about framework speed at all? The README's answer is blunt: an efficient server means lower infrastructure cost, better responsiveness under load, and happy users. Fastify, a fast and low overhead web framework for Node.js, positions itself as highly focused on the best developer experience with the least overhead, built on a plugin architecture it describes as powerful, with Hapi and Express as acknowledged ancestors. It is JavaScript under the MIT license, with the framework described as developer friendly throughout its own documentation.
From zero to a running app
Running npm init pulls down and runs Fastify Create, which uses the generate functionality of Fastify CLI to scaffold a project. One detail in the quick start saves container users an hour: the listen method binds to localhost by default, so a containerized app may need to bind to all interfaces, and the README attaches a security warning to exactly that move.
What you get past hello world
The framework is extensible through hooks, plugins, and decorators. JSON Schema is the recommended tool for validating routes and serializing outputs. Logging runs through Pino rather than something homegrown. The recurring theme is developer friendliness at low overhead, and a repo near 37,000 stars suggests the theme landed with an audience that keeps coming back for the plugin architecture.
Editorial conclusion
No framework pitch survives contact with your real workload, but the design priorities here are stated plainly enough that you can check them against your own bottlenecks.
Community notes