Package org.apache.jackrabbit.oak.segment.remote.persistentcache

Class PersistentRedisCache

java.lang.Object

org.apache.jackrabbit.oak.segment.spi.persistence.persistentcache.AbstractPersistentCache

org.apache.jackrabbit.oak.segment.remote.persistentcache.PersistentRedisCache

All Implemented Interfaces:

Closeable, AutoCloseable, PersistentCache

public class PersistentRedisCache
extends AbstractPersistentCache

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_REDIS_CACHE_EXPIRE_SECONDS
static final String	NAME

Fields inherited from class org.apache.jackrabbit.oak.segment.spi.persistence.persistentcache.AbstractPersistentCache

cacheSize, executor, nextCache, segmentCacheStats, THREADS, writesPending

Constructor Summary

Constructors

Constructor	Description
PersistentRedisCache(String redisHost, int redisPort, int redisExpireSeconds, int redisSocketTimeout, int redisConnectionTimeout, int redisMinConnections, int redisMaxConnections, int redisMaxTotalConnections, int redisDBIndex, IOMonitor redisCacheIOMonitor)

Method Summary

Modifier and Type	Method	Description
void	cleanUp()	Purges the cache entries according to the implementation policy (e.g.
boolean	containsSegment(long msb, long lsb)	Check if the segment exists in the cache.
protected Buffer	readSegmentInternal(long msb, long lsb)	Reads the segment from the cache.
void	writeSegment(long msb, long lsb, Buffer buffer)	Writes the segment to the cache.

Methods inherited from class org.apache.jackrabbit.oak.segment.spi.persistence.persistentcache.AbstractPersistentCache

close, getCacheStats, getWritesPending, linkWith, readSegment, recordCacheLoadTimeInternal

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_REDIS_CACHE_EXPIRE_SECONDS

public static final int DEFAULT_REDIS_CACHE_EXPIRE_SECONDS

See Also:

• Constant Field Values

NAME

public static final String NAME

See Also:

• Constant Field Values

Constructor Details

PersistentRedisCache

public PersistentRedisCache(String redisHost,
 int redisPort,
 int redisExpireSeconds,
 int redisSocketTimeout,
 int redisConnectionTimeout,
 int redisMinConnections,
 int redisMaxConnections,
 int redisMaxTotalConnections,
 int redisDBIndex,
 IOMonitor redisCacheIOMonitor)

Method Details

readSegmentInternal

protected Buffer readSegmentInternal(long msb,
 long lsb)

Description copied from class: AbstractPersistentCache

Reads the segment from the cache. If segment is not found, this method does not query next cache that was set with AbstractPersistentCache.linkWith(AbstractPersistentCache)

Specified by:

readSegmentInternal in class AbstractPersistentCache

Parameters:

msb - the most significant bits of the identifier of the segment

lsb - the least significant bits of the identifier of the segment

Returns:

byte buffer containing the segment data or null if the segment doesn't exist

containsSegment

public boolean containsSegment(long msb,
 long lsb)

Description copied from interface: PersistentCache

Check if the segment exists in the cache.

Parameters:

msb - the most significant bits of the identifier of the segment

lsb - the least significant bits of the identifier of the segment

Returns:

true if the segment exists

writeSegment

public void writeSegment(long msb,
 long lsb,
 Buffer buffer)

Description copied from interface: PersistentCache

Writes the segment to the cache.

Parameters:

msb - the most significant bits of the identifier of the segment

lsb - the least significant bits of the identifier of the segment

buffer - the byte buffer containing the segment data

cleanUp

public void cleanUp()

Description copied from interface: PersistentCache

Purges the cache entries according to the implementation policy (e.g. maximum cache size, maximum number of entries, etc.)