A customer has a use case for a ksqlDB persistent query. You need to make sure that duplicate messages are not processed and messages are not skipped. Which property should you use?

The correct answer is A. processing.guarantee=exactly_once. processing.guarantee=exactly_once ensures that messages are processed exactly once by ksqlDB, preventing both duplicates and message loss.

Ensuring Data Reliability and Durability

Question

Options

Aprocessing.guarantee=exactly_once
Bksql.streams auto offset.reset=earliest
Cksql.streams auto.offset.reset=latest
Dksql.fail.on.production.error=false

How the community answered

(39 responses)

A
85% (33)
B
3% (1)
C
5% (2)
D
8% (3)

Explanation

processing.guarantee=exactly_once ensures that messages are processed exactly once by ksqlDB, preventing both duplicates and message loss.

Topics

#ksqlDB#exactly-once#processing guarantees#deduplication

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