rpoplpush

Removes the last element of the list at source and pushes it back at the start of the list at destination.

[Redis documentation]


rpoplpush(source, destination, [options], [callback])

Arguments Type Description
source string Source key identifier
destination string Destination 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 the value of the removed and pushed item.

Usage

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.rpoplpush('sourceKey', 'destKey', function (err, value) {
  // callback called once the action has completed
});

// Using promises (NodeJS only)
kuzzle.memoryStorage.rpoplpushPromise('sourceKey', 'destKey')
  .then(value => {
    // resolved once the action has completed
  });

Callback response:

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"foo"