What is the proper setup?

Reading the documentation, it is not clear what is the recommended way to setup queues for real world scenarios, i.e. Do I use one queue for the entire application and then route the tasks based on their names?

const queue = new Queue('main-queue');

await queue.add('email:send-parse');
await queue.add('email:send-email');

or am I supposed to use one task per domain, e.g.

const queue = new Queue('email-queue');

await queue.add('send-parse');
await queue.add('send-email');

or one queue/worker per task?

await (new Queue('email-queue')).add('email-queue:send-parse');
await (new Queue('email-queue')).add('email-queue:send-email');

If it is the latter (as some comments seem to imply), then what is the purpose of the task name?

Some brief explanation of the subject would be tremendously helpful.

[manast]

currently it is not possible to move a job inside the wait list, however technically it is possible, so if this is an important usecase I could add it as a new feature.

[manast]

not really, if you have a high priority job that occurs very often it could starve the less prioritized jobs.