vtex-io-events-and-workers

To handle asynchronous background processing in VTEX IO, move heavy or delayed work out of request-response routes by declaring events and workers in service.json, which improves route latency and reliability.

The best way to ensure idempotent event handlers in VTEX IO apps is to design retry-safe processing logic with explicit input contracts and durable state storage, tolerating duplicate event deliveries without side effects.

To declare events and workers in service.json for VTEX IO integrations, explicitly define the event handlers and background workers configuration to wire the runtime behavior for delayed or batched tasks within IO services.

Yes, you can use VTEX IO workers for delayed or batched background tasks by configuring them within service.json to execute event-driven integrations asynchronously, moving expensive operations out of synchronous routes.

VTEX IO event handlers fail on duplicate deliveries if they lack idempotency. You must implement retry-safe processing with explicit input contracts and durable state storage to safely tolerate duplicate background worker events.