Package io.lettuce.core.cluster.api.sync
Interface NodeSelectionHLLCommands<K,V>
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- 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
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method 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.
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Method Detail
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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.
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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
.
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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
.
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