There are two kind of jobs that the OSRS Tracker Cron executes: Common and Agenda jobs.
These are jobs that are executed using Agenda.
The reason we use Agenda to schedule these jobs is because the jobs wil only be executed once, even across replicas. This is especially useful for queueing jobs.
We can be 100% sure we won't have doubly queued players or items if we use Agenda jobs.
Agenda uses a state in MongoDB to prevent double executions.
TODO
Common jobs are jobs that run using node-cron.
These jobs will run at certain intervals, completely independent of other replicas. This is especially useful for processing jobs.
This means the more replicas there are, the faster the queue will be processed.
The replicas should run on a different ip-address, otherwise we might get blocked from using the OSRS Tracker API.
TODO