org.rocksdb

类 ClockCache

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.Cache

org.rocksdb.ClockCache

所有已实现的接口:

java.lang.AutoCloseable

public class ClockCache
extends Cache

Similar to LRUCache, but based on the CLOCK algorithm with better concurrent performance in some cases

字段概要

从类继承的字段 org.rocksdb.RocksObject

nativeHandle_

从类继承的字段 org.rocksdb.AbstractImmutableNativeReference

owningHandle_

构造器概要

构造器

构造器和说明
ClockCache(long capacity) Create a new cache with a fixed size capacity.
ClockCache(long capacity, int numShardBits) Create a new cache with a fixed size capacity.
ClockCache(long capacity, int numShardBits, boolean strictCapacityLimit) Create a new cache with a fixed size capacity.

方法概要

限定符和类型	方法和说明
protected void	disposeInternal(long handle)

从类继承的方法 org.rocksdb.Cache

getPinnedUsage, getUsage

从类继承的方法 org.rocksdb.RocksObject

disposeInternal, getNativeHandle

从类继承的方法 org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

从类继承的方法 java.lang.Object

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

构造器详细资料

ClockCache

public ClockCache(long capacity)

Create a new cache with a fixed size capacity.

参数:

capacity - The fixed size capacity of the cache

ClockCache

public ClockCache(long capacity,
                  int numShardBits)

Create a new cache with a fixed size capacity. The cache is sharded to 2^numShardBits shards, by hash of the key. The total capacity is divided and evenly assigned to each shard. numShardBits = -1 means it is automatically determined: every shard will be at least 512KB and number of shard bits will not exceed 6.

参数:

capacity - The fixed size capacity of the cache

numShardBits - The cache is sharded to 2^numShardBits shards, by hash of the key

ClockCache

public ClockCache(long capacity,
                  int numShardBits,
                  boolean strictCapacityLimit)

Create a new cache with a fixed size capacity. The cache is sharded to 2^numShardBits shards, by hash of the key. The total capacity is divided and evenly assigned to each shard. If strictCapacityLimit is set, insert to the cache will fail when cache is full. numShardBits = -1 means it is automatically determined: every shard will be at least 512KB and number of shard bits will not exceed 6.

参数:

capacity - The fixed size capacity of the cache

numShardBits - The cache is sharded to 2^numShardBits shards, by hash of the key

strictCapacityLimit - insert to the cache will fail when cache is full

方法详细资料

disposeInternal

protected final void disposeInternal(long handle)

指定者:

disposeInternal 在类中 RocksObject