Many years ago I worked for a company that did EDI software. When XML was introduced they had to add support for that, just the primitive XML 0.1 that was arou

Many years ago I worked for a company that did EDI software. When XML was introduced they had to add support for that, just the primitive XML 0.1 that was around at the time with none of the modern complexities. With the same backend code, just switching the parsing, they found either a 100x slowdown in parsing and a 10x increase in memory use or the other way around (so 10x slower, 100x the memory). The functionality was identical, all they did was switch the frontend from EDI to XML. Since EDI is meant for processing large numbers of transactions as quickly as possible, I hate to think what the move to XML did to that. I moved on years ago so I don't now whether they just threw more hardware at the problem to achieve the same thing that EDI already gave them but now with angle brackets, or whether the industry gave up on XML because of its poor performance. Come to think of it I'm pretty sure they would have tried blockchain when that got trendy as well.