With Workerless you can configure the maximum concurrency across multiple queues and control the queue prioritization on AWS. This tool and beautiful website was created by Mohamed Said.
PHP
When Retries Make Things Worse: Protecting Your System From Overload
How a slow dependency becomes an outage, and how deadlines, concurrency limits, retry budgets, and jitter protect useful work. A practical deep dive with PHP examples and a controlled overload test design. Read more