Concurrency in web applications

Question

So recently there has been a lot of emphasis by almost all platform providers to provide new tools/language constructs for better concurrency. And that is also one of the re

Answer 1

About all concurrency in web apps is based on multi-user experience. Often it's just "one process per user", with no common denominator and possibly connected only at database level, but apps like Flockdraw, usteream and other that group many users together in realtime, keep them interconnected and synchronized by multiple threads taking load of separate users but interfacing with each other actively in the realtime.