SDK
SDK Javascript v5.x
1

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]


msetnx(entries, [options], [callback]) #

Arguments Type Description
entries array List of objects each containing the key identifier to add with its associated value.
Properties: key (key identifier), value (associated value)
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 a boolean specifying if the operation was successful or not.

Usage #

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var entries = [
  {key: 'key1', value: 'foo'},
  {key: 'key2', value: 'bar'},
  {key: '...', value: '...'}
];
// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.msetnx(entries, function (err, status) {
  // callback called once the action has completed
});
// Using promises (NodeJS only)
kuzzle.memoryStorage.msetnxPromise(entries)
  .then(status => {
    // resolved once the action has completed
  });

Callback response:

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true