Multiple ChoiceBeginner 45s
Causal consistency
A social app shows a comment before the post it replies to for some users. Which consistency model was likely violated?
Options
- 1Linearizability, which requires each operation to appear atomic and in real-time order across all replicas
- 2Causal consistency: causally related operations must be seen in order by all observers
- 3Snapshot isolation, which gives each transaction one consistent snapshot but no ordering of related ops
- 4Strict serializability, which combines total real-time order with atomicity across all shared objects
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