We founded StormForger Load and Performance Testing SaaS in 2014 and while much has changed since then, one thing hasn't.
HTTP is with its 24 years a well-aged fellow among the web protocols.¹ Today we are mostly using HTTP/1.1² or HTTP/2 and if you have fully embraced the new HTTP/2 world in your entire system this article is mostly an anecdote of past issues. But HTTP/1.1 is still alive and kicking for many systems. And even given its age, people are still forgetting about a very important feature that previous versions did not provide: keep-alive.³