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...

HTTP2 HTTP2 Secure (HTTPS) Plain or insecure HTTP2 HTTP2 Fastify supports HTTP2 over either HTTPS (h2) or plaintext (h2c). Currently, none of the HTTP2-specific APIs are av...

HTTP2 HTTP2 Secure (HTTPS) Plain or insecure HTTP2 HTTP2 Fastify supports HTTP2 over either HTTPS (h2) or plaintext (h2c). Currently, none of the HTTP2-specific APIs are av...

Testing Testing with http injection Example: Testing with a running server Example: How to inspect tap tests Testing Testing is one of the most important parts of developi...

Testing Testing with http injection Example: Testing with a running server Example: How to inspect tap tests Testing Testing is one of the most important parts of developi...

Testing Testing with http injection Example: Testing with a running server Example: How to inspect tap tests Testing Testing is one of the most important parts of developi...

V3 Migration Guide Breaking changes Changed middleware support ( #2014 ) Changed logging serialization ( #2017 ) Changed schema substitution ( #2023 ) Changed schema validati...

V3 Migration Guide Breaking changes Changed middleware support ( #2014 ) Changed logging serialization ( #2017 ) Changed schema substitution ( #2023 ) Changed schema validati...

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...

Validation and Serialization Validation Adding a shared schema Retrieving a copy of shared schemas Ajv Plugins Schema Compiler Using other validation libraries Validation messa...