Queues, schedules and background jobs

On a Monday morning a lender's system emails fifty redemption statements at once. A search provider posts results for thirty matters in a minute, sometimes posting the same result twice. At 2 a.m. a sweep has to look at 1,200 open matters and chase anything overdue. The AML provider allows a fixed number of requests per second across the whole firm. None of this is a single agent run; it's a stream of work that has to be buffered, spread out, rate-limited and diarised. That's what queues and schedulers are for.