SDK
SDK Javascript v5.x
1

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]


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

Callback response:

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-1