Package org.redisson.api

Interface RHyperLogLog<V>

Type Parameters:

V - type of stored values

All Superinterfaces:

RExpirable, RExpirableAsync, RHyperLogLogAsync<V>, RObject, RObjectAsync

All Known Implementing Classes:

RedissonHyperLogLog

public interface RHyperLogLog<V>
extends RExpirable, RHyperLogLogAsync<V>

Probabilistic data structure that lets you maintain counts of millions of items with extreme space efficiency.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
boolean	add(V obj)	Adds element into this structure.
boolean	addAll(Collection<V> objects)	Adds all elements contained in objects collection into this structure
long	count()	Returns approximated number of unique elements added into this structure.
long	countWith(String... otherLogNames)	Returns approximated number of unique elements added into this instances and other instances defined through otherLogNames.
void	mergeWith(String... otherLogNames)	Merges multiple instances into this instance.

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RHyperLogLogAsync

addAllAsync, addAsync, countAsync, countWithAsync, mergeWithAsync

Methods inherited from interface org.redisson.api.RObject

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

Methods inherited from interface org.redisson.api.RObjectAsync

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

Method Detail

add

boolean add(V obj)

Adds element into this structure.

Parameters:

obj - - element to add

Returns:

true if object has been added or false if it was already added

addAll

boolean addAll(Collection<V> objects)

Adds all elements contained in objects collection into this structure

Parameters:

objects - - elements to add

Returns:

true if at least one object has been added or false if all were already added

count

long count()

Returns approximated number of unique elements added into this structure.

Returns:

approximated number of unique elements added into this structure

countWith

long countWith(String... otherLogNames)

Returns approximated number of unique elements added into this instances and other instances defined through otherLogNames.

Parameters:

otherLogNames - - name of instances

Returns:

mergeWith

void mergeWith(String... otherLogNames)

Merges multiple instances into this instance.

Parameters:

otherLogNames - - name of instances