Package org.springframework.data.redis.cache

Class BatchStrategies

java.lang.Object

org.springframework.data.redis.cache.BatchStrategies

public abstract class BatchStrategies
extends Object

Collection of predefined BatchStrategy implementations using the Redis KEYS or SCAN command.

Since:

2.6

Author:

Mark Paluch, Christoph Strobl, John Blum

Method Summary

Modifier and Type	Method	Description
static BatchStrategy	keys()	A BatchStrategy using a single KEYS and DEL command to remove all matching keys.
static BatchStrategy	scan(int batchSize)	A BatchStrategy using a SCAN cursors and potentially multiple DEL commands to remove all matching keys.

Methods inherited from class java.lang.Object

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

Method Details

keys

public static BatchStrategy keys()

A BatchStrategy using a single KEYS and DEL command to remove all matching keys. KEYS scans the entire keyspace of the Redis database and can block the Redis worker thread for a long time on large keyspaces.

KEYS is supported for standalone and clustered (sharded) Redis operation modes.

Returns:

batching strategy using KEYS.

scan

public static BatchStrategy scan(int batchSize)

A BatchStrategy using a SCAN cursors and potentially multiple DEL commands to remove all matching keys. This strategy allows a configurable batch size to optimize for scan batching.

Note that using the SCAN strategy might be not supported on all drivers and Redis operation modes.

Returns:

batching strategy using SCAN.