This is the sort of question you might want to ask on Haskell cafe too. But - This really comes down to whether the GC can trusted, and I would astonished if it was otherwise. It would make writing web frameworks in Haskell rather pointless. (Otoh I can't find a list of real world users for Yesod etc.) - A lot of people use XMonad to manage their desktops and just leave their machines on *forever.* - If Haskell does prove to be unsuitable (which is very unlikely) then Erlang is a safe bet. It's about the most reliable language there is - it was designed for telecoms. It's much simpler to learn than Haskell, although less funky (eg no lazy evaluation) and closer to a scripting language in speed. Get a copy of Programming *Erlang*: Software for a Concurrent World by Joe *Armstrong* and with even minimal Haskell experience you should be writing code straight away. On 20 April 2012 03:43, Michael Orlitzky wrote:

On 04/19/2012 07:40 PM, Mike Meyer wrote:

...

I've got a project coming up that I could use haskell for, providing I can convince myself that it's appropriate. The critical question is:

Anyone using Haskell in a long-running production application? I'm talking about something where the program would run for weeks or months non-stop, with either multiple threads or multiple copies.

I have a rather stupid application that parses feeds from the Twitter API. For each username given on the command line, it calls forkIO and the new thread enters a recursive loop:

recurse x y z = do ... recurse x y z

forever and ever.

Contrary to my expectations (I still basically don't know what I'm doing in Haskell) it seems to run in constant space for months at a time.

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