Programmers use frameworks that offer everything they need out of the box. They do need shared state for sessions. But they don't sit down and think if they're

Programmers use frameworks that offer everything they need out of the box. They do need shared state for sessions. But they don't sit down and think if they're going to use threads or processes. They just choose a popular, feature-full framework. Java and .NET frameworks use threads, rationale being threads perform better. I won't go into that discussion, even if I do have an opinion. Right now, I'm just pointing to what others say.