SDK
SDK Java v2.x
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decr #

Decrements the number stored at key by 1. If the key does not exist, it is set to 0 before performing the operation.

[Redis documentation] (opens new window)


decr(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

Return Value #

Returns the MemoryStorage object to allow chaining.


Callback Response #

Returns an integer containing the updated key value.

Usage #

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kuzzle.memoryStorage.decr("key", new ResponseListener<Long>() {
  @Override
  public void onSuccess(int value) {
    // callback called once the action has completed
  }
  @Override
  public void onError(JSONObject error) {
  }
});

Callback response:

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