Welcome, Fastify v5
summary
Fastify v5 ships in September and targets Node 20+ while removing nine deprecations and adding Node diagnostic_channel for APM integration, claims near zero overhead in production and an ecosystem of 300+ plugins with 70 million downloads so far in 2024. Built-in pieces include the Pino logger, Fast JSON stringify for much faster serialization, inject-based testing without opening ports, autoloaded plugins, encapsulated plugin contexts, and a recommended graceful-shutdown pattern using close-with-grace.
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chapters (26)
- 0:00Introduction
- 1:09What is Fastify
- 3:20Fastify in 2024
- 4:51Open governance
- 5:53Core principles
- 7:40Adoption and benchmarks
- 8:43Starting with Fastify and basic setup
- 10:08Factory pattern
- 10:49Pino logger
- 11:54Type safety
- 12:57Error handling
- 13:39Testing with inject
- 14:21JSON serialization
- 15:25Fastify on AWS Lambda
- 16:07Graceful shutdown
- 17:08Fastify's architecture and dependencies
- 18:11Plugin system
- 19:37Creating plugins
- 20:42Breaking encapsulation
- 21:24Recommended application structure
- 21:44Hooks vs middleware
- 23:10Fastify v5 changes
- 24:36Diagnostic channels
- 25:16Platformatic tools
- 26:42Platformatic features
- 27:04Closing








