zcard #

Returns the number of elements held by a sorted set.

[Redis documentation]

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zcard(key, [options], callback) #

Arguments	Type	Description
key	string	Key identifier
options	JSON Object	Optional parameters
callback	function	Callback

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Options #

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

---

Callback Response #

Returns an integer containing the number of elements in a sorted set.

Usage #

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.zcard('key', function (err, count) {
  // callback called once the action has completed
});
// Using promises (NodeJS only)
kuzzle.memoryStorage.zcardPromise('key')
  .then(count => {
    // resolved once the action has completed
  });

Callback response:

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