pfcount

// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.pfcount(['key1', 'key2', '...'], function (err, count) {
  // callback called once the action has completed
});

// Using promises (NodeJS only)
kuzzle.memoryStorage.pfcountPromise(['key1', 'key2', '...'])
  .then(count => {
    // resolved once the action has completed
  });
String[] keys = new String[]{"key1", "key2", "..."};

kuzzle.memoryStorage.pfcount(keys, new ResponseListener<Long>() {
  @Override
  public void onSuccess(int count) {
    // callback called once the action has completed
  }

  @Override
  public void onError(JSONObject error) {
  }
});
<?php

use \Kuzzle\Kuzzle;


$kuzzle = new Kuzzle('localhost');

try {
  $count = $kuzzle->memoryStorage()->pfcount(['key1', 'key2', '...']);
}
catch (ErrorException $e) {

}

Callback response:

42

Returns the probabilistic cardinality of a HyperLogLog data structure, or of the merged HyperLogLog structures if more than 1 is provided (see pfadd).

[Redis documentation]


pfcount(keys, [options], callback)

ArgumentsTypeDescription
keysstringList of HyperLogLog key identifiers
optionsJSON ObjectOptional parameters
callbackfunctionCallback

Options

OptionTypeDescriptionDefault
queuablebooleanMark this request as (not) queuabletrue

Callback response

Resolves to an integer containing the aggregated probabilistic cardinality of HyperLogLog structures.