It's not about 'safety' (depending on what that means in this context), but as Zach pointed out, if you aren't careful about backpressure you can run into performance bottlenecks with unrestrained async IO operations because although they let you code as if you could handle an unlimited amount of connections, obviously that isn't true. There is only a finite amount of data that can be buffered in and out of any network according to its hardware. When you don't regulate that, your system will end up spending an inordinate amount of time compensating for this. You don't need to worry about this with "regular io" because the "thread per connection" abstraction effectively bounds your activity within the acceptable physical constraints of the server.
On Tuesday, October 7, 2014 2:49:30 PM UTC-4, Brian Guthrie wrote: > > > On Mon, Oct 6, 2014 at 12:10 AM, <adrian...@mail.yu.edu <javascript:>> > wrote: > >> Zach makes an excellent point; I've used AsyncSocketChannels and its irk ( >> http://docs.oracle.com/javase/8/docs/api/java/nio/channels/AsynchronousServerSocketChannel.html), >> >> with core.async in the past. Perhaps replacing your direct java.net.Sockets >> with nio classes that can be given CompletionHandlers ( >> http://docs.oracle.com/javase/7/docs/api/java/nio/channels/CompletionHandler.html) >> >> would be a better fit. >> > > Once I do some performance instrumentation I'll give that a shot. I admit > that I'm not familiar with all the implications of using the nio classes; > were I to switch, is it safe to continue using go blocks, or is it worth > explicitly allocating a single thread per socket? > > Brian > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
