Yes, but generally only when human life is on the line, such as aerospace. For just about everything else, the cost of redundancy in dollars and speed is too hi

Yes, but generally only when human life is on the line, such as aerospace. For just about everything else, the cost of redundancy in dollars and speed is too high. After all, problems are extremely rare, and when the extremely rare problems occur, it is extremely unlikely it matters. Versus a guaranteed cost of more than tripling your hardware, power, data center etc. costs. Maybe you do it in part of your stack, such as redundant mainframes or database nodes. But the most you will see on your appservers is ECC memory in an attempt to avoid cosmic ray bit flips (a similar problem we have been aware of for decades).