Javascript 7.x

rpushx

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

[Redis documentation]

Arguments

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rpushx(key, value, [options]);

Arguments Type Description
key
string
List key
value
string
Value to append
options
object
Optional query arguments

options

The options arguments can contain the following option properties:

Property Type (default) Description
queuable
boolean (true)
If true, queues the request during downtime, until connected to Kuzzle again

Resolve

Resolves to the updated list length.

Usage

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try {
  // Prints: 0
  // ("listfoo" does not exist: the operation fails)
  console.log(await kuzzle.ms.rpushx('listfoo', 'qux'));
  await kuzzle.ms.rpush('listfoo', ['foo', 'bar', 'baz']);
  // Prints: 4
  console.log(await kuzzle.ms.rpushx('listfoo', 'qux'));
} catch (error) {
  console.error(error.message);
}