org.apache.paimon.io.cache

类 CacheManager

java.lang.Object

org.apache.paimon.io.cache.CacheManager

public class CacheManager
extends Object

Cache manager to cache bytes to paged MemorySegments.

字段概要

字段

限定符和类型	字段和说明
static int	REFRESH_COUNT Refreshing the cache comes with some costs, so not every time we visit the CacheManager, but every 10 visits, refresh the LRU strategy.

构造器概要

构造器

构造器和说明
CacheManager(MemorySize maxMemorySize)

方法概要

限定符和类型	方法和说明
org.apache.paimon.shade.caffeine2.com.github.benmanes.caffeine.cache.Cache<org.apache.paimon.io.cache.CacheManager.CacheKey,org.apache.paimon.io.cache.CacheManager.CacheValue>	cache()
int	fileReadCount()
MemorySegment	getPage(RandomAccessFile file, long readOffset, int readLength, java.util.function.BiConsumer<Long,Integer> cleanCallback)
void	invalidPage(RandomAccessFile file, long readOffset, int readLength)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

REFRESH_COUNT

public static final int REFRESH_COUNT

Refreshing the cache comes with some costs, so not every time we visit the CacheManager, but every 10 visits, refresh the LRU strategy.

另请参阅:

常量字段值

构造器详细资料

CacheManager

public CacheManager(MemorySize maxMemorySize)

方法详细资料

cache

@VisibleForTesting
public org.apache.paimon.shade.caffeine2.com.github.benmanes.caffeine.cache.Cache<org.apache.paimon.io.cache.CacheManager.CacheKey,org.apache.paimon.io.cache.CacheManager.CacheValue> cache()

getPage

public MemorySegment getPage(RandomAccessFile file,
                             long readOffset,
                             int readLength,
                             java.util.function.BiConsumer<Long,Integer> cleanCallback)

invalidPage

public void invalidPage(RandomAccessFile file,
                        long readOffset,
                        int readLength)

fileReadCount

public int fileReadCount()