We do heavy backend unit/integration testing, less so on the frontend and a lot of UAT. It's good enough to move fast with some confidence but yes sometimes you

We do heavy backend unit/integration testing, less so on the frontend and a lot of UAT. It's good enough to move fast with some confidence but yes sometimes you have to do tough things and that comes from experience. I recently wrote a distributed, cache-coherent session store for instance. Googling is necessary not sufficient.