Package org.apache.druid.client.cache

Class MemcachedCache

java.lang.Object

org.apache.druid.client.cache.MemcachedCache

All Implemented Interfaces:

Closeable, AutoCloseable, Cache

public class MemcachedCache
extends Object
implements Cache

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.client.cache.Cache

Cache.NamedKey

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_PREFIX_LENGTH

Method Summary

Modifier and Type	Method	Description
void	close()
void	close(String namespace)
static MemcachedCache	create(MemcachedCacheConfig config)
static net.spy.memcached.ConnectionFactory	createConnectionFactory(MemcachedCacheConfig config, LZ4Transcoder transcoder, net.spy.memcached.ops.OperationQueueFactory opQueueFactory, net.spy.memcached.metrics.MetricCollector metricCollector)
void	doMonitor(ServiceEmitter emitter)	Custom metrics not covered by CacheStats may be emitted by this method.
byte[]	get(Cache.NamedKey key)
Map<Cache.NamedKey,byte[]>	getBulk(Iterable<Cache.NamedKey> keys)	Resulting map should not contain any null values (i.e.
CacheStats	getStats()
boolean	isLocal()
void	put(Cache.NamedKey key, byte[] value)

Methods inherited from class java.lang.Object

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

Field Details

MAX_PREFIX_LENGTH

public static final int MAX_PREFIX_LENGTH

See Also:

• Constant Field Values

Method Details

create

public static MemcachedCache create(MemcachedCacheConfig config)

createConnectionFactory

public static net.spy.memcached.ConnectionFactory createConnectionFactory(MemcachedCacheConfig config,
 LZ4Transcoder transcoder,
 net.spy.memcached.ops.OperationQueueFactory opQueueFactory,
 net.spy.memcached.metrics.MetricCollector metricCollector)
                                                                   throws KeyManagementException,
KeyStoreException,
NoSuchAlgorithmException

Throws:

KeyManagementException

KeyStoreException

NoSuchAlgorithmException

getStats

public CacheStats getStats()

Specified by:

getStats in interface Cache

get

public byte[] get(Cache.NamedKey key)

Specified by:

get in interface Cache

put

public void put(Cache.NamedKey key,
 byte[] value)

Specified by:

put in interface Cache

getBulk

public Map<Cache.NamedKey,byte[]> getBulk(Iterable<Cache.NamedKey> keys)

Description copied from interface: Cache

Resulting map should not contain any null values (i.e. cache misses should not be included)

Specified by:

getBulk in interface Cache

Returns:

close

public void close(String namespace)

Specified by:

close in interface Cache

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

isLocal

public boolean isLocal()

Specified by:

isLocal in interface Cache

doMonitor

public void doMonitor(ServiceEmitter emitter)

Description copied from interface: Cache

Custom metrics not covered by CacheStats may be emitted by this method.

Specified by:

doMonitor in interface Cache

Parameters:

emitter - The service emitter to emit on.