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https://issues.apache.org/jira/browse/IOTDB-178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xiangdong Huang closed IOTDB-178.
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Resolution: Fixed
> Cache hit Rate statistics
> --------------------------
>
> Key: IOTDB-178
> URL: https://issues.apache.org/jira/browse/IOTDB-178
> Project: Apache IoTDB
> Issue Type: New Feature
> Reporter: xiangdong Huang
> Priority: Major
>
> As there are several cache structures in IoTDB for supporting fast querying,
> it is good if we can get the cache hit rate.
> The data can help us improving the query process of IoTDB.
>
> Currently, the caches are (According to [~Lei Rui] 's analysis):
> * TsFileMetaDataCache
> * DeviceMetadtaCache
> * FileReaderManager.closedFileReaderMap
> * ChunkLoader.chunkCache
>
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