hsetnx

Sets a field and its value in a hash, only if the field does not already exist.

[Redis documentation]

Arguments

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hsetnx(key, [options]);

Arguments Type Description
key
string
Key
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

Usage

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try {
  // Prints: true
  console.log(await kuzzle.ms.hsetnx('hashfoo', 'foo', 'bar'));

  // Prints: false
  console.log(await kuzzle.ms.hsetnx('hashfoo', 'foo', 'qux'));

  // Prints: bar
  console.log(await kuzzle.ms.hget('hashfoo', 'foo'));

} catch (error) {
  console.error(error.message);
}