zscan #

Iterates incrementally over members contained in a sorted set, using a cursor.

An iteration starts when the cursor is set to 0.
To get the next page of results, simply re-send the request with the updated cursor position provided in the result set.

The scan ends when the cursor returned by the server is 0.

[Redis documentation]

Arguments #

zscan(key, cursor, [options]);

Arguments	Type	Description
`key`	string	Sorted set key
`cursor`	integer	Cursor offset
`options`	object	Optional query arguments

options #

The options arguments can contain the following option properties:

Property	Type (default)	Description
`count`	integer (10)	Return an approximate number of items per result set
`match`	string (*)	Return only keys matching the provided pattern
`queuable`	boolean (true)	If `true`, queues the request during downtime, until connected to Kuzzle again
`timeout`	number (`-1`)	Time (in ms) during which a request will still be waited to be resolved. Set it `-1` if you want to wait indefinitely
`triggerEvents`	boolean (`false`)	If set to `true`, will trigger events even if using Embeded SDK. You should always ensure that your events/pipes does not create an infinite loop. Available since Kuzzle 2.31.0

Resolve #

Resolves to an object representing a result page, with the following properties:

Property	Type	Description
`cursor`	integer	Cursor offset for the next page, or `0` if at the end of the scan
`values`	string[]	List of member-score pairs. The array entries alternate between member values and their associated scores

Usage #

try {
  await kuzzle.ms.zadd('ssetfoo', [
    {member: 'foo', score: '42'},
    {member: 'bar', score: '4'},
    {member: 'baz', score: '-272.15'}
  ]);
  // Prints:
  // {
  //   cursor: '0',
  //   values: [ 'baz', '-272.15', 'bar', '4', 'foo', '42' ]
  // }
  console.log(await kuzzle.ms.zscan('ssetfoo', 0));
} catch (error) {
  console.error(error.message);
}

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