SDK Javascript v5.x

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pfcount #

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) #

Arguments Type Description
keys string List of HyperLogLog 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 an integer containing the aggregated probabilistic cardinality of HyperLogLog structures.

Usage #

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// 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

Callback response:

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