Earlier quoted context omitted.
Redis for 99% of the intended use-cases and companies will be just fine. It has always been rock solid when we used it. It was the opposite of DNS: it was never a problem.
Could you expand on "It was the opposite of DNS: it was never a problem."? Feel like I'm missing some interesting history here.
And then the problem is confounded by the fact that, ironically, DNS works so well that we don’t think of it as a primary point of failure. So inevitably, when there is a DNS problem, it’s the last thing we check. This just reinforces the idea that the problem is always DNS… because in those long, hard to troubleshoot instances… the problem was DNS.