pfmerge #

Merges multiple HyperLogLog data structures into an unique HyperLogLog structure stored at key, approximating the cardinality of the union of the source structures.

[Redis documentation]

pfmerge(key, sources, [options], callback) #

Arguments	Type	Description
`key`	string	Destination key identifier
`sources`	string	List of HyperLogLog source key identifiers
`options`	JSON Object	Optional parameters
`callback`	function	Callback

Options #

Option	Type	Description	Default
`queuable`	boolean	Make this request queuable or not	`true`

Callback Response #

Returns null if successful.

Usage #

String[] keys = new String[]{"key1", "key2", "..."};
kuzzle.memoryStorage.pfmerge('key', keys, new ResponseListener<Void>() {
  @Override
  public void onSuccess(Void v) {
    // callback called once the action has completed
  }
  @Override
  public void onError(JSONObject error) {
  }
});