ChunkCache (IoTDB Server 0.13.2 API)

```
public class ChunkCache
extends Object
```
This class is used to cache Chunk of ChunkMetaData in IoTDB. The caching strategy is LRU.

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`double`	`calculateChunkHitRatio()`
`void`	`clear()` clear LRUCache.
`Chunk`	`get(ChunkMetadata chunkMetaData)`
`Chunk`	`get(ChunkMetadata chunkMetaData, boolean debug)`
`double`	`getAverageLoadPenalty()`
`long`	`getAverageSize()`
`long`	`getEvictionCount()`
`static ChunkCache`	`getInstance()`
`long`	`getMaxMemory()`
`boolean`	`isEmpty()`
`void`	`remove(ChunkMetadata chunkMetaData)`

public static ChunkCache getInstance()

public Chunk get(ChunkMetadata chunkMetaData)
          throws IOException

public Chunk get(ChunkMetadata chunkMetaData,
                 boolean debug)
          throws IOException

public double calculateChunkHitRatio()

public void remove(ChunkMetadata chunkMetaData)

类 ChunkCache