append #

Appends a value to a key. If the key does not exist, it is created.

append(key, value, [options], [callback]) #

Arguments	Type	Description
`key`	string	Key identifier
`value`	string	Value to append to the key
`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 #

Return an integer containing the new length of the key's value.

Usage #

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

Callback response: