org.redisson.api

Interface RRingBuffer<V>

Type Parameters:

V - value type

All Superinterfaces:

Collection<V>, Iterable<V>, Queue<V>, RCollectionAsync<V>, RExpirable, RExpirableAsync, RObject, RObjectAsync, RQueue<V>, RQueueAsync<V>, RRingBufferAsync<V>

All Known Implementing Classes:

RedissonRingBuffer

public interface RRingBuffer<V>
extends RQueue<V>, RRingBufferAsync<V>

RingBuffer based queue evicts elements from the head if queue capacity became full.

The head element removed if new element added and queue is full.

Must be initialized with capacity size trySetCapacity(int) before usage.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method and Description
int	capacity() Returns capacity of this queue
int	remainingCapacity() Returns remaining capacity of this queue
void	setCapacity(int capacity) Sets capacity of the queue and overrides current value.
boolean	trySetCapacity(int capacity) Sets capacity of the queue only if it wasn't set before.

Methods inherited from interface org.redisson.api.RQueue

addListener, poll, pollLastAndOfferFirstTo, readAll

Methods inherited from interface java.util.Queue

add, element, offer, peek, poll, remove

Methods inherited from interface java.util.Collection

addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, parallelStream, remove, removeAll, removeIf, retainAll, size, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObject

copy, delete, dump, getCodec, getIdleTime, getName, isExists, migrate, move, removeListener, rename, renamenx, restore, restore, restoreAndReplace, restoreAndReplace, sizeInMemory, touch, unlink

Methods inherited from interface org.redisson.api.RRingBufferAsync

capacityAsync, remainingCapacityAsync, setCapacityAsync, trySetCapacityAsync

Methods inherited from interface org.redisson.api.RQueueAsync

addListenerAsync, offerAsync, peekAsync, pollAsync, pollAsync, pollLastAndOfferFirstToAsync, readAllAsync

Methods inherited from interface org.redisson.api.RCollectionAsync

addAllAsync, addAsync, containsAllAsync, containsAsync, removeAllAsync, removeAsync, retainAllAsync, sizeAsync

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

Method Detail

trySetCapacity

boolean trySetCapacity(int capacity)

Sets capacity of the queue only if it wasn't set before.

Parameters:

capacity - - queue capacity

Returns:

true if capacity set successfully false if capacity already set

setCapacity

void setCapacity(int capacity)

Sets capacity of the queue and overrides current value. Trims queue if previous capacity value was greater than new.

Parameters:

capacity - - queue capacity

remainingCapacity

int remainingCapacity()

Returns remaining capacity of this queue

Returns:

remaining capacity

capacity

int capacity()

Returns capacity of this queue

Returns:

queue capacity