Fastify Has a Free Web Framework — 2x Faster Than Express With Schema Validation

Express Is Simple. Fastify Is Fast. Express handles ~15K requests/second. Fastify handles ~30K. For high-traffic APIs, that 2x matters. Why Fastify import Fastify from " fastify " const app = Fastify ({ logger : true }) app . get ( " /users/:id " , { schema : { params : { type : " object " , properties : { id : { type : " string " } } }, response : { 200 : { type : " object " , properties : { id : { type : " string " }, name : { type : " string " }, email : { type : " string " } } } } } }, async ( request ) => { return db . getUser ( request . params . id ) }) app . listen ({ port : 3000 }) Schemas validate input AND serialize output. Free performance boost. Fastify vs Express Feature Fastify Express Speed ~30K req/s ~15K req/s Validation Built-in (JSON Schema) Manual Logging Built-in (Pino) Manual TypeScript First-class @types needed Plugin system Encapsulated Global middleware Hooks Full lifecycle Limited Plugin System fastify . register ( require ( " @fastify/cors " )) fastify . reg