see inline ----- Original Message ----- From: "John Menke" <[EMAIL PROTECTED]> > What is the main reason for using embedded Tomcat? Embedded Tomcat will enable your servlets/jsp to access the ejb container within the same VM. This means that the invocation of methods will be intra-VM and extremely fast. Running tour jsp/servlets and your ejb container in spearate VMs will cause a remote method call which is a magnitude or more slower. Embedded Tomcat also gives you the ability to deploy an ear file that contains *both* ejbs and web apps. With Tomcat in separate VMs, webapps are deployed separately from the ejbs. IMHO, embedded Tomcat does not represent a "robust" environment. (Some ppl would argue that Tomcat itself does not represent a robust environment.) For a scalable architecture on a typical web site (static and dynamic targets), I would place Apache at the door and set up one or more tomcat engines to handle the servlet/jsp load. I would then deploy one or more ejb containers. As the load increases you can determine where the bottleneck is and deploy more VMs/Machines to address the need. Currently, Tomcat can be set up to load balance multiple containers against apache. I do not believe the jBoss can be effectively load balanced in the same manner. For example, to communicate to a jBoss server, you get access to the naming service. To do this, you have to hardcode the address of the naming service. Now jBoss will allow multiple containers to share the same naming service, however the service does not allow multiple beans to be deployed to this naming service. When the team addresses this deficiency, jBoss will have taken a huge step forward in failover/clustering support. > If there are reasons for the integration, can I achieve the same results > with an already existing Tomcat installation and, if so, how do I configure > this? As I mentioned, I think running Tomcat in a separate VM makes more sense for any reasonably active web site. There is nothing really to configure. Obviously you need to provide the appropriate jndi properties to allow your servlet/jsp to contact the JNDI service of the ejb container. > I would like to run the Java PetStore application and debug JBoss from > inside JBuilder, does running a non-embedded version of Tomcat have any > implications on either of these areas? When running Embedded Tomcat, you should be able to debug *both* your webapp *and* your ejbs simultaneously. When you separate Tomcat, you can still debug servlet/jsp code *and* ejbs, just not at the same time. Debug can occur remotely or not...your choice. jim _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
