Does cachelib support timed persistent cache data

[xiedeyantu]

[leozzx]

I don't know what is "timed persistent cache data", but what cachelib supports is a kind of offline snapshot. You need to stop ("shutdown") the cache and persist the whole cache state and data.

[xiedeyantu]

Generate snapshots periodically to avoid shutdown failure. All data in NVM is unavailable, which can ensure that the recently generated snapshots can be used

[leozzx]

As cache must be stopped when generating snapshots, we can't do that periodically in the background. User has to make sure there is no cache access and explicitly call shutdown API to persist the cache data.

[sathyaphoenix]

Moving to a discussion since this is not an issue to be addressed