Drive Out Through Testing

QA Testing limitations

Unbalanced capacities are another problem rarely observed during QA. The main reason is that QA for every system is usually scaled down to just two servers. So during integration testing, two servers represent the front-end system and two servers represent the back-end system, resulting in a one-to-one ratio. In production, where the big budget is allocated, the ratio could be ten to one or worse. Should we make QA an exact scale replica of the entire enterprise? It would be nice, wouldn’t it? Of course, we can’t do that. We can apply a test harness, though (see Test Harnesses). By mimicking a back-end system wilting under load, the test harness helps you verify that your front-end system degrades gracefully (see ...