Checks if the specified keys exist in the database.

[Redis documentation]

exists(keys, [options], callback)

Arguments Type Description
keys array List of keys to check for existence
options JSON Object Optional parameters
callback function Callback


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

Callback Response

Returns an integer containing the number of existing keys amongst the provided list.


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String[] keys = {"key1", "key2", "..."};

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

  public void onError(JSONObject error) {

Callback response:

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