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I need to create a simple Chat system like facebook chat and a twitter-like app.
What is the best concurrent program languages in this case ?
Erlang, Haskell, Scala or anything else ?
Thanks ^_^
Facebook chat is written in Erlang, http://www.facebook.com/note.php?note_id=14218138919
What aspect? Message delivery? The web frontend? It’s all message routing ultimately. Haskell’s been used recently for a couple of real time production trading systems, using heavy multicore concurrency. http://www.starling-software.com/misc/icfp-2009-cjs.pdf
More relevant: what’s the scale: how many users do you expect to serve concurrently?