Delivery guarantees
At-most-once, at-least-once and exactly-once trade complexity for correctness.
What you will be able to do
- At-least-once needs idempotent consumers.
- Idempotent producers reduce duplicates.
- Transactions enable exactly-once.
In plain English
At-most-once, at-least-once and exactly-once trade complexity for correctness.
- At-least-once needs idempotent consumers.
- Idempotent producers reduce duplicates.
- Transactions enable exactly-once.
at-most-once: commit before processing
at-least-once: process then commit
exactly-once: transactional producer + consumerYour turn
EasyExplain it back
Answer from memory: Which guarantee needs idempotent processing?
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Knowledge checkQuestion 1
Which guarantee needs idempotent processing?
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