SDK Java v2.x

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 #

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