io.lettuce.core.cluster.api.sync

Interface NodeSelectionHLLCommands<K,V>

Type Parameters:

K - Key type.

V - Value type.

All Known Subinterfaces:

NodeSelectionCommands<K,V>

public interface NodeSelectionHLLCommands<K,V>

Synchronous executed commands on a node selection for HyperLogLog (PF* commands).

Since:

3.0

Author:

Mark Paluch

Generated class:

by io.lettuce.apigenerator.CreateSyncNodeSelectionClusterApi

Method Summary

Modifier and Type	Method and Description
Executions<Long>	pfadd(K key, V... values) Adds the specified elements to the specified HyperLogLog.
Executions<Long>	pfcount(K... keys) Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s).
Executions<String>	pfmerge(K destkey, K... sourcekeys) Merge N different HyperLogLogs into a single one.

Method Detail

pfadd

Executions<Long> pfadd(K key,
                       V... values)

Adds the specified elements to the specified HyperLogLog.

Parameters:

key - the key.

values - the values.

Returns:

Long integer-reply specifically: 1 if at least 1 HyperLogLog internal register was altered. 0 otherwise.

pfmerge

Executions<String> pfmerge(K destkey,
                           K... sourcekeys)

Merge N different HyperLogLogs into a single one.

Parameters:

destkey - the destination key.

sourcekeys - the source key.

Returns:

String simple-string-reply The command just returns OK.

pfcount

Executions<Long> pfcount(K... keys)

Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s).

Parameters:

keys - the keys.

Returns:

Long integer-reply specifically: The approximated number of unique elements observed via PFADD.