SYSE.40:4.5 - Exercise overload, isolation and recovery

Test representative ordinary demand, a burst, an expensive variant and a dependency slowdown or failure within a safe permitted environment. Observe accepted, rejected, delayed and partial task outcomes as well as resources.

Verify that the protected class still obtains its qualified result, queues stay bounded, and other tenants or downstream Systems are not made worse in an unaccepted way. Check the control/observation path under pressure; repair the arrangement if its state cannot be observed or admission cannot resume under the selected recovery conditions.

Then reduce pressure and verify recovery. Ensure queues drain usefully, admission resumes appropriately and clients do not overwhelm the recovering service. A lower resource chart alone does not show that users can work again.

Return the exercised envelope, chosen limits, response behavior and remaining blind spots. Use SYSE.36 to retain user-visible failure and delay in measurement, and SYSE.38 for unresolved active failures.