Package net.spy.memcached

Class KetamaConnectionFactory

java.lang.Object

net.spy.memcached.compat.SpyObject

net.spy.memcached.DefaultConnectionFactory

net.spy.memcached.KetamaConnectionFactory

All Implemented Interfaces:

ConnectionFactory

public class KetamaConnectionFactory
extends DefaultConnectionFactory

ConnectionFactory instance that sets up a ketama compatible connection.

This implementation piggy-backs on the functionality of the DefaultConnectionFactory in terms of connections and queue handling. Where it differs is that it uses both the KetamaNodeLocator and the HashAlgorithm.KETAMA_HASH to provide consistent node hashing.

See Also:

• RJ's blog post

Field Summary

Fields inherited from class net.spy.memcached.DefaultConnectionFactory

DEFAULT_AUTH_WAIT_TIME, DEFAULT_CLIENT_MODE, DEFAULT_FAILURE_MODE, DEFAULT_HASH, DEFAULT_MAX_RECONNECT_DELAY, DEFAULT_MAX_TIMEOUTEXCEPTION_THRESHOLD, DEFAULT_METRIC_TYPE, DEFAULT_OP_QUEUE_LEN, DEFAULT_OP_QUEUE_MAX_BLOCK_TIME, DEFAULT_OPERATION_TIMEOUT, DEFAULT_READ_BUFFER_SIZE, opQueueLen

Constructor Summary

Constructors

Constructor	Description
KetamaConnectionFactory()	Create a KetamaConnectionFactory with the default parameters.
KetamaConnectionFactory(int qLen, int bufSize, long opQueueMaxBlockTime)
KetamaConnectionFactory(int qLen, int bufSize, long opQueueMaxBlockTime, HashAlgorithm hash, KetamaNodeKeyFormatter.Format nodeKeyFormat, Map<InetSocketAddress,Integer> weights)	Create a KetamaConnectionFactory with the maximum operation queue length, the given read buffer size, the maximum time to block waiting operations, a specific hash algorithm, a set ring key format, and a given set of weights.
KetamaConnectionFactory(ClientMode clientMode, int qLen, int bufSize, long opQueueMaxBlockTime)	Create a KetamaConnectionFactory with the given maximum operation queue length, and the given read buffer size.

Method Summary

Modifier and Type	Method	Description
NodeLocator	createLocator(List<MemcachedNode> nodes)	Create a NodeLocator instance for the given list of nodes.
KetamaNodeKeyFormatter.Format	getKetamaNodeKeyFormat()
Map<InetSocketAddress,Integer>	getWeights()

Methods inherited from class net.spy.memcached.DefaultConnectionFactory

createConnection, createMemcachedNode, createOperationQueue, createReadOperationQueue, createWriteOperationQueue, enableMetrics, getAuthDescriptor, getAuthWaitTime, getClientMode, getDefaultTranscoder, getDynamicModePollingInterval, getFailureMode, getHashAlg, getHostnameForTlsVerification, getInitialObservers, getKeepAlive, getListenerExecutorService, getMaxReconnectDelay, getMetricCollector, getName, getOperationFactory, getOperationTimeout, getOpQueueLen, getOpQueueMaxBlockTime, getReadBufSize, getSSLContext, getTimeoutExceptionThreshold, isDaemon, isDefaultExecutorService, setClientMode, shouldOptimize, skipTlsHostnameVerification, toString, useNagleAlgorithm

Methods inherited from class net.spy.memcached.compat.SpyObject

getLogger

Methods inherited from class java.lang.Object

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

Constructor Details

KetamaConnectionFactory

public KetamaConnectionFactory(ClientMode clientMode,
 int qLen,
 int bufSize,
 long opQueueMaxBlockTime)

Create a KetamaConnectionFactory with the given maximum operation queue length, and the given read buffer size.

Parameters:

opQueueMaxBlockTime - the maximum time to block waiting for op queue operations to complete, in milliseconds

KetamaConnectionFactory

public KetamaConnectionFactory(int qLen,
 int bufSize,
 long opQueueMaxBlockTime)

KetamaConnectionFactory

public KetamaConnectionFactory(int qLen,
 int bufSize,
 long opQueueMaxBlockTime,
 HashAlgorithm hash,
 KetamaNodeKeyFormatter.Format nodeKeyFormat,
 Map<InetSocketAddress,Integer> weights)

Create a KetamaConnectionFactory with the maximum operation queue length, the given read buffer size, the maximum time to block waiting operations, a specific hash algorithm, a set ring key format, and a given set of weights.

KetamaConnectionFactory

public KetamaConnectionFactory()

Create a KetamaConnectionFactory with the default parameters.

Method Details

createLocator

public NodeLocator createLocator(List<MemcachedNode> nodes)

Description copied from interface: ConnectionFactory

Create a NodeLocator instance for the given list of nodes.

Specified by:

createLocator in interface ConnectionFactory

Overrides:

createLocator in class DefaultConnectionFactory

getKetamaNodeKeyFormat

public KetamaNodeKeyFormatter.Format getKetamaNodeKeyFormat()

Returns:

the ketamaNodeKeyFormat

getWeights

public Map<InetSocketAddress,Integer> getWeights()

Returns:

the ketama node weights