On Mon, Jan 31, 2011 at 2:28 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: >> > Hello everybody, >> > >> > 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. > > Thank you for your quick reply. How are my chances to get patches to > Yesod incorporated into the mainstream code?
If it's a clean patch and does not break backwards compatibility: very high. If it's a clean patch that *does* break backwards compatibility: still good, but you'll have to wait till a major release. For not-so-clean patches, I suppose it depends on how dirty we're talking ;). Michael _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
