Right - for operations that you don't want to handle inside a single tick (long running stuff), EventMachine can farm off to another thread so you don't block the event thread. When you're handling I/O and not doing any CPU intensive operations, you don't need to use defer. It's been a while since I've used EventMachine, but that's my take on it.
On 2 December 2011 16:26, Dave Newman <ddanger...@gmail.com> wrote: > I think by default it keeps 10 threads around for running async > operations. > > Dave Newman > @whatupdave > > On Friday, 2 December 2011 at 4:09 PM, Dmytrii Nagirniak wrote: > > On 02/12/2011, at 3:47 PM, freshto...@gmail.com wrote: > > > Hi Dmytrii, > > On 2 December 2011 15:37, Dmytrii Nagirniak <dna...@gmail.com> wrote: > > > On 02/12/2011, at 3:16 PM, Dave Newman wrote: > > > You could use eventmachine. > > > > EM uses Threads under the hood. So it's doesn't seem to be cheap. > > > No - it works like node.js. It uses event-driven I/O based on epoll, > which is similar to libev (what node.js uses). It's fast (for Ruby) and > cheap. Anything you can do in node.js you can do with EventMachine, > libraries permitting. > > > Hmm. Interesting. The docs say that it does use threads internally: > > The action of > defer<http://eventmachine.rubyforge.org/EventMachine.html#M000486> is > to take the block specified in the first parameter (the “operation”) and > schedule it for asynchronous execution on an internal thread pool > maintained by > EventMachine<http://eventmachine.rubyforge.org/EventMachine.html> > . > > But I guess it should indeed be cheap enough with the internal thread pool. > > Thanks. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby or Rails Oceania" group. > To post to this group, send email to rails-oceania@googlegroups.com. > To unsubscribe from this group, send email to > rails-oceania+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rails-oceania?hl=en. > > > -- > You received this message because you are subscribed to the Google Groups > "Ruby or Rails Oceania" group. > To post to this group, send email to rails-oceania@googlegroups.com. > To unsubscribe from this group, send email to > rails-oceania+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rails-oceania?hl=en. > -- James -- You received this message because you are subscribed to the Google Groups "Ruby or Rails Oceania" group. To post to this group, send email to rails-oceania@googlegroups.com. To unsubscribe from this group, send email to rails-oceania+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rails-oceania?hl=en.
