Integrations

Full working integration examples live in the Fastify CQRS example app.

The important part is not Fastify itself. The important part is the model:

• decorators describe intent
• initializers wire runtime behavior
• integrations stay declarative at the module/controller level
• the actual implementation still uses the full native API of the underlying technology

This means you can build almost any integration you want in a declarative way while still using the native underlying framework or library directly.

The only real downside is that you write a bit more manual integration code yourself. That tradeoff is usually worth it because you avoid adding framework-specific packages just to get one integration style.

Integration examples

• Fastify integration(silimar for any another HTTP framework)
• Config
• Kysely Query Builder with explicit read/write rights per module
• Cache
• Retry
• Timeout
• Scheduler, Cron
• Event Emitter
• Queue / BullMQ
• RabbitMQ