Mark a job as completed.
Completed job item, including the result and success status.
Worker name/identifier to credit.
Pop a job off the queue for the given worker.
Push a job onto the queue.
Requeue all jobs for a given worker.
Requeue all jobs for all workers.
Get the scores for all workers.
A record of worker names and their respective scores.
Get the number of jobs checked out to each worker.