Priority Queues

[thecodedrift]

Why

When jobs are scheduled to run at the same time, the current take() operation on drivers does not sort for higher priority jobs.

Solution

• Add an additional optional "priority" field to the document
• Add necessary indexes to allow drivers to take by visible < now, ordered by priority DESC then visible DESC
  • Loki driver change
  • Mongo driver change
  • Postgres driver change