webhook-architecture

Structure webhook handling in NestJS using a three-layer pattern: HTTP validation, event verification and routing, and domain logic execution. This separation isolates signature checks and routing from core business processing, ensuring secure and maintainable inbound event workflows.

Prevent duplicate webhook processing by implementing idempotency checks within the event verification layer. This validates incoming HTTP callbacks against previously processed events, ensuring external services like payment providers do not trigger duplicate domain logic execution.

Verify webhook signatures in NestJS by validating incoming HTTP requests within the first architectural layer. This security mechanism ensures that external service callbacks are authenticated before routing events to the domain logic execution layer.

Yes, this webhook architecture requires Prisma and event emitter setup alongside NestJS. Prisma manages database operations for idempotency checks, while event emitter handles internal routing to the appropriate domain logic after HTTP validation.

Route webhook event types by implementing a dedicated event verification and routing layer. After initial HTTP validation, this layer parses the event payload and uses event emitter to dispatch specific actions, like payments or subscriptions, to the correct domain logic.