org.redisson

Class RedissonSetCache<V>

java.lang.Object

org.redisson.RedissonSetCache<V>

Type Parameters:

K - key

V - value

All Implemented Interfaces:

Iterable<V>, Collection<V>, Set<V>, RCollectionAsync<V>, RExpirable, RExpirableAsync, RObject, RObjectAsync, RSetCache<V>, RSetCacheAsync<V>

public class RedissonSetCache<V>
extends Object
implements RSetCache<V>

Set-based cache with ability to set TTL for each entry via #put(Object, Object, long, TimeUnit) method. And therefore has an complex lua-scripts inside. Uses map(value_hash, value) to tie with sorted set which contains expiration record for every value with TTL.

Current Redis implementation doesn't have set entry eviction functionality. Thus values are checked for TTL expiration during any value read operation. If entry expired then it doesn't returns and clean task runs asynchronous. Clean task deletes removes 100 expired entries at once. In addition there is EvictionScheduler. This scheduler deletes expired entries in time interval between 5 seconds to 2 hours.

If eviction is not required then it's better to use org.redisson.reactive.RedissonSet.

Author:

Nikita Koksharov

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RedissonSetCache(Codec codec, EvictionScheduler evictionScheduler, CommandAsyncExecutor commandExecutor, String name)
protected	RedissonSetCache(EvictionScheduler evictionScheduler, CommandAsyncExecutor commandExecutor, String name)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(V e)
boolean	add(V value, long ttl, TimeUnit unit)
boolean	addAll(Collection<? extends V> c)
io.netty.util.concurrent.Future<Boolean>	addAllAsync(Collection<? extends V> c)
io.netty.util.concurrent.Future<Boolean>	addAsync(V e)
io.netty.util.concurrent.Future<Boolean>	addAsync(V value, long ttl, TimeUnit unit)
void	clear()
boolean	clearExpire() Clear an expire timeout or expire date for object.
io.netty.util.concurrent.Future<Boolean>	clearExpireAsync() Clear an expire timeout or expire date for object in async mode.
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
io.netty.util.concurrent.Future<Boolean>	containsAllAsync(Collection<?> c)
io.netty.util.concurrent.Future<Boolean>	containsAsync(Object o)
boolean	delete() Deletes the object
io.netty.util.concurrent.Future<Boolean>	deleteAsync() Delete object in async mode
boolean	expire(long timeToLive, TimeUnit timeUnit) Set a timeout for object.
io.netty.util.concurrent.Future<Boolean>	expireAsync(long timeToLive, TimeUnit timeUnit) Set a timeout for object in async mode.
boolean	expireAt(Date timestamp) Set an expire date for object.
boolean	expireAt(long timestamp) Set an expire date for object.
io.netty.util.concurrent.Future<Boolean>	expireAtAsync(Date timestamp) Set an expire date for object in async mode.
io.netty.util.concurrent.Future<Boolean>	expireAtAsync(long timestamp) Set an expire date for object in async mode.
protected <V> V	get(io.netty.util.concurrent.Future<V> future)
String	getName() Returns name of object
boolean	isEmpty()
boolean	isExists() Check object existence
io.netty.util.concurrent.Future<Boolean>	isExistsAsync() Check object existence in async mode.
Iterator<V>	iterator()
void	migrate(String host, int port, int database) Transfer a object from a source Redis instance to a destination Redis instance
io.netty.util.concurrent.Future<Void>	migrateAsync(String host, int port, int database) Transfer a object from a source Redis instance to a destination Redis instance in async mode
boolean	move(int database) Move object to another database
io.netty.util.concurrent.Future<Boolean>	moveAsync(int database) Move object to another database in async mode
protected <V> io.netty.util.concurrent.Promise<V>	newPromise()
protected <V> io.netty.util.concurrent.Future<V>	newSucceededFuture(V result)
long	remainTimeToLive() Remaining time to live of Redisson object that has a timeout
io.netty.util.concurrent.Future<Long>	remainTimeToLiveAsync() Get remaining time to live of object in seconds.
boolean	remove(Object value)
boolean	removeAll(Collection<?> c)
io.netty.util.concurrent.Future<Boolean>	removeAllAsync(Collection<?> c)
io.netty.util.concurrent.Future<Boolean>	removeAsync(Object o)
void	rename(String newName) Rename current object key to newName
io.netty.util.concurrent.Future<Void>	renameAsync(String newName) Rename current object key to newName in async mode
boolean	renamenx(String newName) Rename current object key to newName only if new key is not exists
io.netty.util.concurrent.Future<Boolean>	renamenxAsync(String newName) Rename current object key to newName in async mode only if new key is not exists
boolean	retainAll(Collection<?> c)
io.netty.util.concurrent.Future<Boolean>	retainAllAsync(Collection<?> c)
int	size() Returns the number of elements in cache.
io.netty.util.concurrent.Future<Integer>	sizeAsync() Returns the number of elements in cache.
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

equals, hashCode

Methods inherited from interface org.redisson.core.RExpirable

clearExpire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.core.RObject

delete, getName, isExists, migrate, move, rename, renamenx

Methods inherited from interface org.redisson.core.RExpirableAsync

expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.core.RObjectAsync

isExistsAsync, migrateAsync, moveAsync, renameAsync, renamenxAsync

Constructor Detail

RedissonSetCache

protected RedissonSetCache(EvictionScheduler evictionScheduler,
                CommandAsyncExecutor commandExecutor,
                String name)

RedissonSetCache

protected RedissonSetCache(Codec codec,
                EvictionScheduler evictionScheduler,
                CommandAsyncExecutor commandExecutor,
                String name)

Method Detail

size

public int size()

Description copied from interface: RSetCache

Returns the number of elements in cache. This number can reflects expired elements too due to non realtime cleanup process.

Specified by:

size in interface Collection<V>

Specified by:

size in interface Set<V>

Specified by:

size in interface RSetCache<V>

sizeAsync

public io.netty.util.concurrent.Future<Integer> sizeAsync()

Description copied from interface: RSetCacheAsync

Returns the number of elements in cache. This number can reflects expired elements too due to non realtime cleanup process.

Specified by:

sizeAsync in interface RCollectionAsync<V>

Specified by:

sizeAsync in interface RSetCacheAsync<V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<V>

Specified by:

isEmpty in interface Set<V>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<V>

Specified by:

contains in interface Set<V>

containsAsync

public io.netty.util.concurrent.Future<Boolean> containsAsync(Object o)

Specified by:

containsAsync in interface RCollectionAsync<V>

iterator

public Iterator<V> iterator()

Specified by:

iterator in interface Iterable<V>

Specified by:

iterator in interface Collection<V>

Specified by:

iterator in interface Set<V>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<V>

Specified by:

toArray in interface Set<V>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<V>

Specified by:

toArray in interface Set<V>

add

public boolean add(V e)

Specified by:

add in interface Collection<V>

Specified by:

add in interface Set<V>

add

public boolean add(V value,
          long ttl,
          TimeUnit unit)

Specified by:

add in interface RSetCache<V>

addAsync

public io.netty.util.concurrent.Future<Boolean> addAsync(V value,
                                                long ttl,
                                                TimeUnit unit)

Specified by:

addAsync in interface RSetCacheAsync<V>

addAsync

public io.netty.util.concurrent.Future<Boolean> addAsync(V e)

Specified by:

addAsync in interface RCollectionAsync<V>

removeAsync

public io.netty.util.concurrent.Future<Boolean> removeAsync(Object o)

Specified by:

removeAsync in interface RCollectionAsync<V>

remove

public boolean remove(Object value)

Specified by:

remove in interface Collection<V>

Specified by:

remove in interface Set<V>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<V>

Specified by:

containsAll in interface Set<V>

containsAllAsync

public io.netty.util.concurrent.Future<Boolean> containsAllAsync(Collection<?> c)

Specified by:

containsAllAsync in interface RCollectionAsync<V>

addAll

public boolean addAll(Collection<? extends V> c)

Specified by:

addAll in interface Collection<V>

Specified by:

addAll in interface Set<V>

addAllAsync

public io.netty.util.concurrent.Future<Boolean> addAllAsync(Collection<? extends V> c)

Specified by:

addAllAsync in interface RCollectionAsync<V>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<V>

Specified by:

retainAll in interface Set<V>

retainAllAsync

public io.netty.util.concurrent.Future<Boolean> retainAllAsync(Collection<?> c)

Specified by:

retainAllAsync in interface RCollectionAsync<V>

removeAllAsync

public io.netty.util.concurrent.Future<Boolean> removeAllAsync(Collection<?> c)

Specified by:

removeAllAsync in interface RCollectionAsync<V>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<V>

Specified by:

removeAll in interface Set<V>

clear

public void clear()

Specified by:

clear in interface Collection<V>

Specified by:

clear in interface Set<V>

deleteAsync

public io.netty.util.concurrent.Future<Boolean> deleteAsync()

Description copied from interface: RObjectAsync

Delete object in async mode

Specified by:

deleteAsync in interface RObjectAsync

Returns:

true if object was deleted false if not

expireAsync

public io.netty.util.concurrent.Future<Boolean> expireAsync(long timeToLive,
                                                   TimeUnit timeUnit)

Description copied from interface: RExpirableAsync

Set a timeout for object in async mode. After the timeout has expired, the key will automatically be deleted.

Specified by:

expireAsync in interface RExpirableAsync

Parameters:

timeToLive - - timeout before object will be deleted

timeUnit - - timeout time unit

Returns:

true if the timeout was set and false if not

expireAtAsync

public io.netty.util.concurrent.Future<Boolean> expireAtAsync(long timestamp)

Description copied from interface: RExpirableAsync

Set an expire date for object in async mode. When expire date comes the key will automatically be deleted.

Specified by:

expireAtAsync in interface RExpirableAsync

Parameters:

timestamp - - expire date in seconds (Unix timestamp)

Returns:

true if the timeout was set and false if not

clearExpireAsync

public io.netty.util.concurrent.Future<Boolean> clearExpireAsync()

Description copied from interface: RExpirableAsync

Clear an expire timeout or expire date for object in async mode. Object will not be deleted.

Specified by:

clearExpireAsync in interface RExpirableAsync

Returns:

true if the timeout was cleared and false if not

expire

public boolean expire(long timeToLive,
             TimeUnit timeUnit)

Description copied from interface: RExpirable

Set a timeout for object. After the timeout has expired, the key will automatically be deleted.

Specified by:

expire in interface RExpirable

Parameters:

timeToLive - - timeout before object will be deleted

timeUnit - - timeout time unit

Returns:

true if the timeout was set and false if not

expireAt

public boolean expireAt(long timestamp)

Description copied from interface: RExpirable

Set an expire date for object. When expire date comes the key will automatically be deleted.

Specified by:

expireAt in interface RExpirable

Parameters:

timestamp - - expire date in milliseconds (Unix timestamp)

Returns:

true if the timeout was set and false if not

expireAt

public boolean expireAt(Date timestamp)

Description copied from interface: RExpirable

Set an expire date for object. When expire date comes the key will automatically be deleted.

Specified by:

expireAt in interface RExpirable

Parameters:

timestamp - - expire date

Returns:

true if the timeout was set and false if not

expireAtAsync

public io.netty.util.concurrent.Future<Boolean> expireAtAsync(Date timestamp)

Description copied from interface: RExpirableAsync

Set an expire date for object in async mode. When expire date comes the key will automatically be deleted.

Specified by:

expireAtAsync in interface RExpirableAsync

Parameters:

timestamp - - expire date

Returns:

true if the timeout was set and false if not

clearExpire

public boolean clearExpire()

Description copied from interface: RExpirable

Clear an expire timeout or expire date for object.

Specified by:

clearExpire in interface RExpirable

Returns:

true if timeout was removed false if object does not exist or does not have an associated timeout

remainTimeToLive

public long remainTimeToLive()

Description copied from interface: RExpirable

Remaining time to live of Redisson object that has a timeout

Specified by:

remainTimeToLive in interface RExpirable

Returns:

time in milliseconds -2 if the key does not exist. -1 if the key exists but has no associated expire.

remainTimeToLiveAsync

public io.netty.util.concurrent.Future<Long> remainTimeToLiveAsync()

Description copied from interface: RExpirableAsync

Get remaining time to live of object in seconds.

Specified by:

remainTimeToLiveAsync in interface RExpirableAsync

Returns:

-1 if object does not exist or time in seconds

get

protected <V> V get(io.netty.util.concurrent.Future<V> future)

newPromise

protected <V> io.netty.util.concurrent.Promise<V> newPromise()

newSucceededFuture

protected <V> io.netty.util.concurrent.Future<V> newSucceededFuture(V result)

getName

public String getName()

Description copied from interface: RObject

Returns name of object

Specified by:

getName in interface RObject

Returns:

name

rename

public void rename(String newName)

Description copied from interface: RObject

Rename current object key to newName

Specified by:

rename in interface RObject

renameAsync

public io.netty.util.concurrent.Future<Void> renameAsync(String newName)

Description copied from interface: RObjectAsync

Rename current object key to newName in async mode

Specified by:

renameAsync in interface RObjectAsync

Returns:

migrate

public void migrate(String host,
           int port,
           int database)

Description copied from interface: RObject

Transfer a object from a source Redis instance to a destination Redis instance

Specified by:

migrate in interface RObject

Parameters:

host - - destination host

port - - destination port

database - - destination database

migrateAsync

public io.netty.util.concurrent.Future<Void> migrateAsync(String host,
                                                 int port,
                                                 int database)

Description copied from interface: RObjectAsync

Transfer a object from a source Redis instance to a destination Redis instance in async mode

Specified by:

migrateAsync in interface RObjectAsync

Parameters:

host - - destination host

port - - destination port

database - - destination database

Returns:

move

public boolean move(int database)

Description copied from interface: RObject

Move object to another database

Specified by:

move in interface RObject

Returns:

true if key was moved else false

moveAsync

public io.netty.util.concurrent.Future<Boolean> moveAsync(int database)

Description copied from interface: RObjectAsync

Move object to another database in async mode

Specified by:

moveAsync in interface RObjectAsync

Returns:

true if key was moved false if not

renamenx

public boolean renamenx(String newName)

Description copied from interface: RObject

Rename current object key to newName only if new key is not exists

Specified by:

renamenx in interface RObject

Returns:

renamenxAsync

public io.netty.util.concurrent.Future<Boolean> renamenxAsync(String newName)

Description copied from interface: RObjectAsync

Rename current object key to newName in async mode only if new key is not exists

Specified by:

renamenxAsync in interface RObjectAsync

Returns:

delete

public boolean delete()

Description copied from interface: RObject

Deletes the object

Specified by:

delete in interface RObject

isExists

public boolean isExists()

Description copied from interface: RObject

Check object existence

Specified by:

isExists in interface RObject

Returns:

true if object exists and false otherwise

isExistsAsync

public io.netty.util.concurrent.Future<Boolean> isExistsAsync()

Description copied from interface: RObjectAsync

Check object existence in async mode.

Specified by:

isExistsAsync in interface RObjectAsync

Returns:

true if object exists and false otherwise