Support Forums: Message List - Monitoring Session Replication in J2EE Clusters http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Mon, 20 May 2013 01:14:02 -0400 Replication Protocol http://www.theserverside.com/discussions/thread.tss?thread_id=28626 Thu, 04 Dec 2008 00:39:16 -0500 Thu, 04 Dec 2008 00:39:16 -0500 Thu, 04 Dec 2008 00:39:16 -0500 Dec 4, 2008 Mark Lindros 0 Re: What is a reasonable HTTPSession size? http://www.theserverside.com/discussions/thread.tss?thread_id=28626 MessAdmin. Check it out!]]> Fri, 23 Mar 2007 10:18:23 -0400 Fri, 23 Mar 2007 10:18:23 -0400 Fri, 23 Mar 2007 10:18:23 -0400 Mar 23, 2007 Cédrik LIME 0 What is a reasonable HTTPSession size? http://www.theserverside.com/discussions/thread.tss?thread_id=28626
Typical apps are probably in the 50KB range, from what I've seen.

500KB and even 1MB+ are not that unusual, but for many...]]> Sun, 01 Jan 2006 00:43:36 -0500 Sun, 01 Jan 2006 00:43:36 -0500 Sun, 01 Jan 2006 00:43:36 -0500 Jan 1, 2006 Cameron Purdy 1 What is a reasonable HTTPSession size? http://www.theserverside.com/discussions/thread.tss?thread_id=28626 You can qualify your answers with specific scenarios/techniques etc.

Our session size is 2 Meg and I thought that was outrageously large.(Weblogic 8.1 session affinity turned on)
I...]]> Wed, 28 Dec 2005 15:26:36 -0500 Wed, 28 Dec 2005 15:26:36 -0500 Wed, 28 Dec 2005 15:26:36 -0500 Dec 28, 2005 Parag Teredesai 2 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 Cache control headers in the HTTP response ... allow to tell a browser that a particular page is dynamic and should not be cached. Most browsers work by the rules, it is only the Firefox which thinks too smart about itself and caches...]]> Fri, 17 Sep 2004 11:26:49 -0400 Fri, 17 Sep 2004 11:26:49 -0400 Fri, 17 Sep 2004 11:26:49 -0400 Sep 17, 2004 Michael Jouravlev 0 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 As for 1 meg of session data: You are right, I would not put it in the web page. On the other hand, if you have 1 meg of session data in the first place, something seems to be fairly wrong, in most application scenarios. Not because there is...]]> Fri, 17 Sep 2004 11:07:18 -0400 Fri, 17 Sep 2004 11:07:18 -0400 Fri, 17 Sep 2004 11:07:18 -0400 Sep 17, 2004 Cameron Purdy 0 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626
Ugly URLs for GET method* Necessity to keep strict page order* URL cannot be modified by a user; a user cannot select page of his choice* Back button would not work, because prior URL does not have newer session data (oh, I...]]> Tue, 14 Sep 2004 12:05:08 -0400 Tue, 14 Sep 2004 12:05:08 -0400 Tue, 14 Sep 2004 12:05:08 -0400 Sep 14, 2004 Michael Jouravlev 1 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 Ugly URLs for GET method* Necessity to keep strict page order* URL cannot be modified by a user; a user cannot select page of his choice* Back button would not work, because prior URL does not have newer session data (oh, I forgot, you...]]> Tue, 14 Sep 2004 06:01:44 -0400 Tue, 14 Sep 2004 06:01:44 -0400 Tue, 14 Sep 2004 06:01:44 -0400 Sep 14, 2004 Karl Banke 3 Not just marketing http://www.theserverside.com/discussions/thread.tss?thread_id=28626
I've...]]> Tue, 14 Sep 2004 01:56:53 -0400 Tue, 14 Sep 2004 01:56:53 -0400 Tue, 14 Sep 2004 01:56:53 -0400 Sep 14, 2004 Mirko Novakovic 0 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 Right, but even non-NFS local mounts (EXT2, even FATx) will work fine, because it's just "overflow" for the memory on that particular cluster node. However, with NFS you could do some even more interesting things...]]> Mon, 13 Sep 2004 15:24:48 -0400 Mon, 13 Sep 2004 15:24:48 -0400 Mon, 13 Sep 2004 15:24:48 -0400 Sep 13, 2004 Brian Miller 0 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626
...rolling them out to a DB or just to a local disk (which is much faster and less expensive and more scalable than a database.)
Totally. NFS is the best cluster fabric I know: pervasive, free, simple, fast, and with...]]> Mon, 13 Sep 2004 14:51:52 -0400 Mon, 13 Sep 2004 14:51:52 -0400 Mon, 13 Sep 2004 14:51:52 -0400 Sep 13, 2004 Cameron Purdy 1 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 ...rolling them out to a DB or just to a local disk (which is much faster and less expensive and more scalable than a database.)
Totally. NFS is the best cluster fabric I know: pervasive, free, simple, fast, and with very useful...]]> Mon, 13 Sep 2004 14:27:15 -0400 Mon, 13 Sep 2004 14:27:15 -0400 Mon, 13 Sep 2004 14:27:15 -0400 Sep 13, 2004 Brian Miller 2 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626
Saving data to a database (like I suggest in the article) will scale and guaranty no data loss much better than any in-memory mechanism.
What you might gain is transactional atomicity, but that is about...]]> Mon, 13 Sep 2004 14:13:42 -0400 Mon, 13 Sep 2004 14:13:42 -0400 Mon, 13 Sep 2004 14:13:42 -0400 Sep 13, 2004 Michael Jouravlev 4 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 do you know which app-servers do asynchronous in-memory replication and which do not? As far as I know WebLogic replicates session states just between two server instances (primary and secondary server), i.e. point-to-point. But I do not know...]]> Mon, 13 Sep 2004 13:08:00 -0400 Mon, 13 Sep 2004 13:08:00 -0400 Mon, 13 Sep 2004 13:08:00 -0400 Sep 13, 2004 Cameron Purdy 0 Nice but theory http://www.theserverside.com/discussions/thread.tss?thread_id=28626 To minimize the potential for data loss, the session update should be synchronous, and should be processed by the time the request processing completes.It is relatively common for application servers to asynchronously update the session data...]]> Mon, 13 Sep 2004 11:46:54 -0400 Mon, 13 Sep 2004 11:46:54 -0400 Mon, 13 Sep 2004 11:46:54 -0400 Sep 13, 2004 Dirk Ludwig 1