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System Design Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
System Design
What does it mean for a consumer operation to be 'idempotent'?
A
It runs faster than a non-idempotent operation
B
Running it twice (or more) has the same effect as running it exactly once
C
It never fails
D
It only works with pub/sub, not point-to-point queues
Check Answer