DELIVERYExactly-once
Idempotent message processing with deduplication at the platform level. No duplicate side effects, no lost messages.
RECOVERYDead-letter queues
Messages that fail after all retries land in a DLQ for inspection, replay, or manual resolution. Nothing disappears.
PARALLELConsumer groups
Partition messages across consumers for parallel processing. Rebalance automatically as consumers scale.
FAN-OUTTopic broadcasting
Publish once, deliver to every subscriber. Each consumer group gets its own cursor and processes independently.