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preemptive-cache-age - Amazon Timestream
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preemptive-cache-age

Parameter Details
Default3 days
Allowed ValuesDuration
CategoryMemory Management / Caching

Detailed Explanation:

Controls the age threshold for preemptive cache warming after compaction. When new compacted files newer than this age are created, they are preemptively loaded into the Parquet memory cache.

Recommendation: Keep at 3 days (default). Reduce if cache memory pressure is an issue; increase if queries frequently access data older than 3 days.