Load Test One Endpoint, Watch the Rest

Endpoint and session load plans allow teams to independently schedule and evaluate different workloads, making it possible to measure whether a critical action such as posting a banking transaction remains reliable while demand rises on another service such as statement retrieval. Endpoint groups can replay selected requests, while session groups replay complete recorded user journeys when authentication, account identity, and request order matter; both support scheduling models including fixed arrivals, concurrent sessions, and adaptive request-rate targets. A representative test keeps transaction posting at a steady rate while statement requests ramp up, then applies a latency threshold and minimum sample count specifically to transaction requests during the busiest test period. Reports should distinguish planned and actual load, attempts, failures, latency, and requests completing after the schedule, since successful responses alone may not confirm that intended traffic was delivered. Experiments with a mocked statement dependency found that the mock provided predictable behavior but was slightly slower than a fast local real dependency, illustrating that mocks do not necessarily speed up tests. The central approach is to isolate workloads and test how contention over shared resources such as databases, caches, or thread pools affects the endpoint users depend on most.

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