exists #

Checks if the specified keys exist in the database.

Arguments #

exists(keys, [options]);

Arguments	Type	Description
`keys`	string[]	Keys to check for existence
`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 number of existing keys.

Usage #

try {
  // Prints: 0
  console.log(await kuzzle.ms.exists(['foo']));
  await kuzzle.ms.set('foo', 'bar');
  // Prints: 1
  console.log(await kuzzle.ms.exists(['foo']));
  console.log('Success');
} catch (error) {
  console.error(error.message);
}

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