feat: add leaseCache to change gc policy #172
Merged
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Change GC policy
This patch changes GC policy from LRU to LFU/LRU: cleans the blob by LFU first then LRU.
Change:
leaseCache
: the cache of lease, help record the used count and time.leaseCache
.The
leaseCache
is not thread-safe, we make sure the safe by thegcSingleflight
and the thread-safe ofcontent.db.Update
.Ref: #141
Test result of leaseCache: