Term Kind Topic What it is
Concurrency concept Concurrency How many operations are in flight at once — the quantity that actually saturates a system, and the one most worth limiting explicitly.
Deadline-Derived Queue Depth Deadline-Bounded Queue concept Concurrency The rule that a request queue's maximum depth comes from the client's deadline and the service's completion rate, so the queue can never hold work that will expire before it is served.
Parallelism and Concurrency concept Concurrency The distinction between structuring work so it can make progress independently and actually executing work simultaneously on multiple cores.