Comment by vasilia

I'm working in a company with 20+ years of the legacy code base. We have a custom search engine fully optimized for our purposes. Decades were spent writing this code. It supports all the newest Linux kernel technologies. The codebase is really good. But every year a new inter tries to show that open source solutions are more reliable and faster. They don't try to write code in 1 hr of course. They spend 10 days on average to show proof of concept that is really fast for benchmarking, but it fails when we try to load testing data. I don't know why people think that nobody checked other solutions before them.