rpushx

Appends the specified value at the end of a list, only if the key already exists and if it holds a list.

[Redis documentation]


rpushx(key, value, [options], [callback])

Arguments Type Description
key string Key identifier
value string Value to add at the end of the list
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 number of items in the list.

Usage

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.rpushx('key', 'foo', function (err, count) {
  // callback called once the action has completed
});

// Using promises (NodeJS only)
kuzzle.memoryStorage.rpushxPromise('key', 'foo')
  .then(count => {
    // resolved once the action has completed
  });

Callback response:

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