backtype.storm.utils

Class TimeCacheMap<K,V>

java.lang.Object

backtype.storm.utils.TimeCacheMap<K,V>

Deprecated.

@Deprecated
public class TimeCacheMap<K,V>
extends Object

Expires keys that have not been updated in the configured number of seconds. The algorithm used will take between expirationSecs and expirationSecs * (1 + 1 / (numBuckets-1)) to actually expire the message. get, put, remove, containsKey, and size take O(numBuckets) time to run. The advantage of this design is that the expiration thread only locks the object for O(1) time, meaning the object is essentially always available for gets/puts.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	TimeCacheMap.ExpiredCallback<K,V> Deprecated.

Constructor Summary

Constructors

Constructor and Description
TimeCacheMap(int expirationSecs) Deprecated.
TimeCacheMap(int expirationSecs, int numBuckets) Deprecated.
TimeCacheMap(int expirationSecs, int numBuckets, TimeCacheMap.ExpiredCallback<K,V> callback) Deprecated.
TimeCacheMap(int expirationSecs, TimeCacheMap.ExpiredCallback<K,V> callback) Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
void	cleanup() Deprecated.
boolean	containsKey(K key) Deprecated.
V	get(K key) Deprecated.
void	put(K key, V value) Deprecated.
Object	remove(K key) Deprecated.
int	size() Deprecated.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeCacheMap

public TimeCacheMap(int expirationSecs,
            int numBuckets,
            TimeCacheMap.ExpiredCallback<K,V> callback)

Deprecated.

TimeCacheMap

public TimeCacheMap(int expirationSecs,
            TimeCacheMap.ExpiredCallback<K,V> callback)

Deprecated.

TimeCacheMap

public TimeCacheMap(int expirationSecs)

Deprecated.

TimeCacheMap

public TimeCacheMap(int expirationSecs,
            int numBuckets)

Deprecated.

Method Detail

containsKey

public boolean containsKey(K key)

Deprecated.

get

public V get(K key)

Deprecated.

put

public void put(K key,
       V value)

Deprecated.

remove

public Object remove(K key)

Deprecated.

size

public int size()

Deprecated.

cleanup

public void cleanup()

Deprecated.