Hello Sherman, Most Java portal servers including Jetspeed is a J2EE application - running on an application server. So portal server is not much different from any other J2EE application running on an application server.
Besides all portals are based on web technology. There are several load balancing mechanisms available outside the portal server to ensure high availability. This includes application server clustering. The application server clustering varies based on the application server you are using - for example Tomcat / BEA / WebSphere / Borland / Oracle, etc. In addition to application server clustering, you could also use a web server-farm with a load-balancing device. In one of my previous project we used the Cisco Local Director http://www.cisco.com/en/US/products/hw/contnetw/ps1894/index.html - but this product has reached end-of-life. Cisco offers several ways to achieve this http://www.cisco.com/en/US/products/sw/conntsw/ps2349/index.html is an interesting example. So - in short, if you install Jetspeed on a single Pentium-PC also running Apache / Tomcat / MySQL - don't expect portal server to scale up to 50K users. With properly planned and careful installation - apps server clustering and web server load-balancing - there is no limit to the number of users you can support. Hope this answers your question. Thanks and Regards, Santhosh Nair [EMAIL PROTECTED] OpenSI.Net - The OpenSource System Integrators Phone: +65-65883343 ----- Original Message ----- From: "Sherman Mohler" <[EMAIL PROTECTED]> To: "Jetspeed Developers List" <[EMAIL PROTECTED]> Sent: Tuesday, April 20, 2004 7:43 AM Subject: Scaleability of Jetspeed > If I may ask, what is the largest deployment using Jetspeed anyone knows > of? Are there any "known" scaleability concerns regarding Jetspeed, or > portals in general? > > I am asking this because I ran into a uPortal enthusiast who went on to > say that portals really do not scale well past 50,000 users. Seems to me > that while portal (compound view) patterns are certainly non-trivial, > that was a pretty broad-brush statement. Any input would be greatly > appreciated, as my organization is considering adopting Jetspeed for > some non-profit initiatives. > > Thanks! > > -- Sherman > Teacher's Treasure Trove > www.teachingsupplies.com > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
