SDK
SDK Javascript v5.x
1

zcard #

Returns the number of elements held by a sorted set.

[Redis documentation]


zcard(key, [options], callback) #

Arguments Type Description
key string Key identifier
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 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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