[To rel/0.12] [IOTDB-1415] Fix OOM caused by ChunkCache #3312
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HTHou
approved these changes
Jun 4, 2021
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Description
The detailed description could be seen in JIRA
Analysis
The details could be found in Confluence
Solution
Use Caffeine Cache to replace the previous LinkedHashMap.
Caffeine is a high performance Java caching library providing a near optimal hit rate. Caffeine provides an in-memory cache using a Google Guava inspired API. The improvements draw on their experience designing Guava's cache and ConcurrentLinkedHashMap.
The Tests in their website shows that it's much more better than Guava Cache.
In our own weekly test, Caffeine Cache's performance is same as the previous wrong implementation of master.