I've found if you're in the situation where JSON parsing performance is becoming a bottleneck then data/schema validation bottlenecks are probably not far behin

I've found if you're in the situation where JSON parsing performance is becoming a bottleneck then data/schema validation bottlenecks are probably not far behind. I have several hot paths in server projects where parsing IP addresses, dates, and other such data types that JSON doesn't support, eat cycles. Or maybe nobody else bothers to validate their data.