Idempotent Consumer

This example shows how to handle at-least-once delivery safely by making consumers idempotent.

It shows:

• event id as an idempotency key
• skip-if-processed pattern
• publisher with intentional duplicates
• production notes for database-backed idempotency

Full example on GitHub:
https://github.com/bitspacerlabs/rabbit-relay/tree/main/examples/17-idempotent-consumer