StevenLuMT commented on PR #3522:
URL: https://github.com/apache/bookkeeper/pull/3522#issuecomment-1281433499
There are currently 3 schemes for masterKeyCache:
1. Create a 1 hour guava cache
Applicable scenarios: simple to implement;
Disadvantages: the granularity of the lock is large, and the data
structure will be locked when cleaning
2. Use the structure ConcurrentLongHashMap, the key is ledgerId, and the
value is masterKey;
Applicable scenarios: do not set masterKey or masterKey settings
are mostly the same;
Disadvantage: there will be room to enlarge if the same masterKey
is set for ledgerId
3. Use the structure ConcurrentOpenHashMap, the key is masterKey, the value
is ledgerId,
Applicable scenarios: do not set masterKey or masterKey settings are
mostly the same
Disadvantages: the masterKey settings are different, which increases
the time-consuming of get/remove
or else I send a email talking ablout it ?
help me have a look at it @eolivelli @dlg99 @hangc0276 @merlimat
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