org.apache.paimon.io.cache

Class CacheManager

java.lang.Object

org.apache.paimon.io.cache.CacheManager

public class CacheManager
extends Object

Cache manager to cache bytes to paged MemorySegments.

Field Summary

Fields

Modifier and Type	Field and Description
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.

Constructor Summary

Constructors

Constructor and Description
CacheManager(MemorySize maxMemorySize)

Method Summary

Modifier and Type	Method and Description
org.apache.paimon.shade.caffeine2.com.github.benmanes.caffeine.cache.Cache<CacheKey,?>	cache()
int	fileReadCount()
MemorySegment	getPage(CacheKey key, CacheReader reader, CacheCallback callback)
void	invalidPage(CacheKey key)

Methods inherited from class java.lang.Object

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

Field Detail

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.

See Also:

Constant Field Values

Constructor Detail

CacheManager

public CacheManager(MemorySize maxMemorySize)

Method Detail

cache

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

getPage

public MemorySegment getPage(CacheKey key,
                             CacheReader reader,
                             CacheCallback callback)

invalidPage

public void invalidPage(CacheKey key)

fileReadCount

public int fileReadCount()