That's the crux of the issue. Most of webdev is just managing a huge amount of very simple pieces of code, where I/O from somewhere, to somewhere dominates. On

That's the crux of the issue. Most of webdev is just managing a huge amount of very simple pieces of code, where I/O from somewhere, to somewhere dominates. One particular issue I remember when talking with Alibaba engineers when I worked on a subcontractor for a custom DC project was "1 second kill" That's a phenomenon when some super good deal is posted onto the front-page of Taobao, and they get squished when people from all over China smashing F5 click on the deal. Purchasing looks like a lock, and write task from the DB side, and the whole of Taobao.com was tied onto a single point of failure MySQL cluster in 2016 abused to the maximum. They went to Computer Science people which only said that there is no way around locking, and a single DB write origin. External contractors wrote a super-duper performant "database gateway" which organised, and queued purchase reservations to the stock database at around 50hz.