Bekreftelser (acks) forteller RabbitMQ at en melding har blitt behandlet, slik at den kan fjernes fra køen. De er essensielle for pålitelig levering — for å sikre at meldinger ikke går tapt hvis en consumer faller ut.
Hvordan bekreftelser fungerer
When a consumer receives and processes a message, it ACKNOWLEDGES it:
→ ACK → "I've processed this message" → RabbitMQ removes it from the queue
→ if a consumer DIES before acking (crash, disconnect) → RabbitMQ REQUEUES the message
→ redelivered to another consumer (NOT lost)
→ acks ensure messages are processed reliably (not lost if a consumer fails)
