Middlewares Restrict middleware execution to a certain path(s) Express middleware compatibility Middlewares Fastify out of the box provides an asynchronous middleware engine ...

Plugins Plugin Options Route Prefixing option Error handling Create a plugin Handle the scope Plugins Fastify allows the user to extend its functionalities with plugins. A...

Type-Providers Type Providers Providers Json Schema to Ts TypeBox Zod Scoped Type-Provider Type Definition of FastifyInstance + TypeProvider Type-Providers Type Provider...

Middleware Middleware Restrict middleware execution to certain paths Alternatives Middleware Middleware Starting with Fastify v3.0.0, middleware is not supported out of the ...

Middleware Middleware Restrict middleware execution to certain paths Alternatives Middleware Middleware Starting with Fastify v3.0.0, middleware is not supported out of the ...

Getting Started Install Your first server Note Your first plugin Loading order of your plugins Validate your data Serialize your data Parsing request payloads Extend your s...

Getting Started Install Your first server Note Your first plugin Loading order of your plugins Validate your data Serialize your data Parsing request payloads Extend your s...

Getting Started Install Your first server Note Your first plugin Loading order of your plugins Validate your data Serialize your data Extend your server Test your server R...

Logging Log Redaction Logging Logging is disabled by default, and you can enable it by passing { logger: true } or { logger: { level: 'info' } } when you create a fastify in...

Logging Log Redaction Logging Logging is disabled by default, and you can enable it by passing { logger: true } or { logger: { level: 'info' } } when you create a fastify ins...