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Dynamo | DB | Question 19
When working with Global Secondary Indexes (GSIs), under what circumstances can a GSI become "backlogged" or lag behind the base table in terms of data synchronization ?
(A)
When the RCU and WCU of the GSI are set higher than the base table.
(B)
When a large number of write operations target items that don't qualify for the GSI, causing the GSI to frequently check and skip these writes
(C)
When the base table receives a high rate of write operations that cause the GSI to be updated, and the GSI can't keep up due to its provisioned WCU settings.
(D)
GSIs always remain synchronized with the base table in real-time, irrespective of the provisioned capacity settings.
Answer
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