incr #

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

[Redis documentation]

incr(key, [options], [callback]) #

Options #

Return Value #

Returns the MemoryStorage object to allow chaining.

Callback Response #

Returns an integer containing the updated key value.

Usage #

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

Callback response:

42