On Thu, Feb 3, 2011 at 3:14 PM, Ertugrul Soeylemez <[email protected]> wrote: > Michael Snoyman <[email protected]> wrote: > >> On Mon, Jan 31, 2011 at 1:09 PM, Ertugrul Soeylemez <[email protected]> wrote: >> >> > how well do WAI, Yesod and the 'persistent' package play with >> > concurrency? For example, I'd like to write a program, which >> > concurrently provides two related sites as well as a few background >> > workers, which do something with the database. My idea would look >> > something like this: >> > >> > main :: IO () >> > main = >> > withMyAppPool $ \pool -> do >> > forkIO $ worker1 ... -- background worker >> > forkIO $ worker2 ... -- background worker >> > forkIO $ worker3 ... -- background worker >> > forkIO $ toWaiApp ... -- site 1 >> > forkIO $ toWaiApp ... -- site 2 >> > >> > Will I run into problems with this? >> >> There should not be any issues, just make sure you compile with >> -threaded. The persistent database connection pool should work just >> fine for this. If you find any issues, please let me know, but I have >> not had trouble in the past. > > I've run into the first problem with this. Without having to use > subsites, what's an easy method to use wai-handler-devel with such a > setup?
I believe the new architecture in use for wai-handler-devel 0.2 (which will work with Yesod 0.7) should work properly with multi-threaded apps. But yes, there's no easy way to do this with the current wai-handler-devel. Michael _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
