Support Forums: Message List - Threadless AJAX polling with Jetty 6.0 Continuations http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Thu, 20 Jun 2013 05:58:55 -0400 This is proven method of acheiving scalability http://www.theserverside.com/discussions/thread.tss?thread_id=36594 Sat, 24 Sep 2005 14:28:56 -0400 Sat, 24 Sep 2005 14:28:56 -0400 Sat, 24 Sep 2005 14:28:56 -0400 Sep 24, 2005 geek squad 0 Threadless AJAX polling with Jetty 6.0 Continuations http://www.theserverside.com/discussions/thread.tss?thread_id=36594 http://simpleweb.sourceforge.net/design/concurrency.php]]> Wed, 21 Sep 2005 08:16:01 -0400 Wed, 21 Sep 2005 08:16:01 -0400 Wed, 21 Sep 2005 08:16:01 -0400 Sep 21, 2005 Rodolfo de Paula 1 Better Name? http://www.theserverside.com/discussions/thread.tss?thread_id=36594 Tue, 20 Sep 2005 08:08:34 -0400 Tue, 20 Sep 2005 08:08:34 -0400 Tue, 20 Sep 2005 08:08:34 -0400 Sep 20, 2005 gbevin 0 Better Name? http://www.theserverside.com/discussions/thread.tss?thread_id=36594
Originally...]]> Tue, 20 Sep 2005 07:54:11 -0400 Tue, 20 Sep 2005 07:54:11 -0400 Tue, 20 Sep 2005 07:54:11 -0400 Sep 20, 2005 gregw 1 Better Name? http://www.theserverside.com/discussions/thread.tss?thread_id=36594
sorry, I didn't see the RetryContinuation inner class of SelectChannelConnector until this morning when I had time to play with the Ajax Chat demo.

However, it seems even further from continuations than your WaitingContinuation...]]> Tue, 20 Sep 2005 03:57:58 -0400 Tue, 20 Sep 2005 03:57:58 -0400 Tue, 20 Sep 2005 03:57:58 -0400 Sep 20, 2005 gbevin 2 shouldn't the AJAX client do the polling? http://www.theserverside.com/discussions/thread.tss?thread_id=36594
If the problem is holding if you are using lots of asynchronous messaging with Ajax, then this change allows you to support 1000s of clients, to use the Servlet API on the server side and not have 1000s of blocked threads.James Tue, 20 Sep 2005 03:48:13 -0400 Tue, 20 Sep 2005 03:48:13 -0400 Tue, 20 Sep 2005 03:48:13 -0400 Sep 20, 2005 James Strachan 0 shouldn't the AJAX client do the polling? http://www.theserverside.com/discussions/thread.tss?thread_id=36594 If the problem is holding if you are using lots of asynchronous messaging with Ajax, then this change allows you to support 1000s of clients, to use the Servlet API on the server side and not have 1000s of blocked threads.James Mon, 19 Sep 2005 22:10:26 -0400 Mon, 19 Sep 2005 22:10:26 -0400 Mon, 19 Sep 2005 22:10:26 -0400 Sep 19, 2005 bad mASH 1 Plain HTML client http://www.theserverside.com/discussions/thread.tss?thread_id=36594 I'll be writing a short article this week to talk a bit about 'continuations' and 'continuations'. Imho, this Jetty 6 feature aren't 'continuations'. They don't capture the local variable state and the program counter, they don't restore it...]]> Mon, 19 Sep 2005 16:21:36 -0400 Mon, 19 Sep 2005 16:21:36 -0400 Mon, 19 Sep 2005 16:21:36 -0400 Sep 19, 2005 Remy Maucherat 0 Better Name? http://www.theserverside.com/discussions/thread.tss?thread_id=36594 But as far as java and servlets go, the Jetty Continuationscome pretty close to the Wikipedea definition. But Servlets are stateless request handlers and the state they...]]> Mon, 19 Sep 2005 14:49:16 -0400 Mon, 19 Sep 2005 14:49:16 -0400 Mon, 19 Sep 2005 14:49:16 -0400 Sep 19, 2005 gbevin 3 Browser timeouts http://www.theserverside.com/discussions/thread.tss?thread_id=36594
The timeout on the server has to be less than the time most browser will wait for a response. I find 20 or 30 seconds works fine and is a lot less load than an AJAX client that polls continously and a lot more responsive that a client that...]]> Mon, 19 Sep 2005 13:39:44 -0400 Mon, 19 Sep 2005 13:39:44 -0400 Mon, 19 Sep 2005 13:39:44 -0400 Sep 19, 2005 gregw 0 Better Name? http://www.theserverside.com/discussions/thread.tss?thread_id=36594
I agree that naming is difficult and that Continuations in other languages may be able to offer more features than are available in java servlets.

But as far as java and servlets go, the Jetty Continuations
come pretty close to the...]]> Mon, 19 Sep 2005 13:33:06 -0400 Mon, 19 Sep 2005 13:33:06 -0400 Mon, 19 Sep 2005 13:33:06 -0400 Sep 19, 2005 gregw 4 shouldn't the AJAX client do the polling? http://www.theserverside.com/discussions/thread.tss?thread_id=36594 If the problem is holding connections on the server, shouldn't the state be completely stripped from the server the asynchronicity be managed by the AJAX client?AJAX already starts magnifying processing burdens on the web client side, so one...]]> Mon, 19 Sep 2005 13:24:01 -0400 Mon, 19 Sep 2005 13:24:01 -0400 Mon, 19 Sep 2005 13:24:01 -0400 Sep 19, 2005 James Strachan 2 shouldn't the AJAX client do the polling? http://www.theserverside.com/discussions/thread.tss?thread_id=36594
AJAX already starts magnifying processing burdens on the web client side, so one...]]> Mon, 19 Sep 2005 13:05:59 -0400 Mon, 19 Sep 2005 13:05:59 -0400 Mon, 19 Sep 2005 13:05:59 -0400 Sep 19, 2005 Constance Eustace 3 Threadless AJAX polling with Jetty 6.0 Continuations http://www.theserverside.com/discussions/thread.tss?thread_id=36594
Also, I would think that the more efficient use of the thread pool is just one of the concerns regarding scalability. If we are saying that the browser will retain...]]> Mon, 19 Sep 2005 08:57:54 -0400 Mon, 19 Sep 2005 08:57:54 -0400 Mon, 19 Sep 2005 08:57:54 -0400 Sep 19, 2005 Wesley Hall 1 Plain HTML client http://www.theserverside.com/discussions/thread.tss?thread_id=36594 Mon, 19 Sep 2005 08:30:39 -0400 Mon, 19 Sep 2005 08:30:39 -0400 Mon, 19 Sep 2005 08:30:39 -0400 Sep 19, 2005 gbevin 6