- Tag
- 每小时一个Tag, 可以用于细粒度的数据增量读取
- 保留3个月的增量数据(24*90=2160个Tag)
- Snapshot
- 以checkpointInterval=5min为例
- 12个snapshot可以cover住两个tag之间的interval
- 防止一些意外, minSnapshotRetainNum = 14?
- 拍脑定3h要36个snapshot, maxSnapShotRetationNum = 48 ?
-
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