msetnx #

Sets the provided keys to their respective values, only if they do not exist. If a key exists, then the whole operation is aborted and no key is set.

[Redis documentation]

Arguments #

msetnx(entries, [options]);

object[]

object

entries #

The entries argument is an array of objects. Each object is a key-value pair, defined with the following properties:

string

*

options #

The options arguments can contain the following option properties:

boolean (true)

Resolve #

Resolves to a boolean telling whether the keys have been set or not.

Usage #

const entries = [
  { key: 'hello', value: 'world' },
  { key: 'foo', value: 'bar' }
];
try {
  await kuzzle.ms.set('foo', 'bar');
  // Prints: false
  // (the entire operation aborted)
  console.log(await kuzzle.ms.msetnx(entries));
  await kuzzle.ms.del('foo');
  // Prints: true
  console.log(await kuzzle.ms.msetnx(entries));
} catch (error) {
  console.error(error.message);
}