Fastify

Workflow

1. Confirm service SLOs, trust boundaries, and integration contracts.
2. Design plugin/module boundaries and encapsulation strategy.
3. Define request/response schemas and error contracts.
4. Wire lifecycle hooks for auth, validation, and observability.
5. Harden runtime limits, security headers, and backpressure behavior.
6. Validate performance and failure handling under load.
7. Ship with operational dashboards and alert coverage.

Preflight (Ask / Check First)

• Node.js and Fastify versions.
• Deployment runtime (container, serverless, VM).
• Authn/authz model and session/token strategy.
• Latency and throughput targets.
• Existing incidents (timeouts, memory pressure, error spikes).