I was part of a team at a job about 20 years ago that ported an existing C codebase over to (then new) Java. Once we got everything working, a co-worker who was very familiar with the old C codebase remarked that with C it took a lot longer to get things working the first time, but once they were working, they stayed working whereas with Java you could get things working pretty quick, but you'd start to see problems when you actually put load on it.