Apache Tomcat or WebSphere

We’re already using Domino and Apache Tomcat together. Has anyone found a good document comparing WebSphere and Apache?

My understanding is that WebSphere is really just Apache, with other IBM features added and a good administration tool. It looks like WebSphere and Domino can do Single Sign-on (SSO) well together, but you can’t change the JDK in WebSphere and that concerns me.

Subject: Apache or WebSphere

Doug,When you say Apache, I assume you are talking about Tomcat, it is usual practice to call Apache Tomcat as “Tomcat” because there is another beast called Apache which has nothing to do with Tomcat. There are reasons which I will not go into here.

So if that is the case then there is a large difference between Tomcat and WebSphere.

For one thing Tomcat is a Servlet engine, WebSphere is an Application Server (plus other things–again I will not go into details here).

In terms of SSO, Domino and Websphere use a LtpaToken for SSO. Other web based environments (including anything running under the Tomcat Servlet engine) does not use LtpaToken. In fact you could use a variety of techniques, depending on what you are trying to do. There is a lot in that subject of and by itself.

Your concern about the JDK is questionable in my opinion–why would you see it as necessary?

Regards

Rolf Pfotenhauer

Subject: RE: Apache or WebSphere

Yes, I’m referring to Apache Tomcat. As you mentioned, we’re only using Tomcat today as a servlet engine to render JSPs and Servlets. SSO doesn’t work between Tomcat and Domino, at least not like it does with WebSphere and Domino. To do this, we’re opening a DIIOP connection back to the Domino server using the LtpaToken – this helps Tomcat determine who the authenticated user is, and this information is then stored in the Tomcat session. As for the JDK, one reason we chose Tomcat over WebSphere last year was because of the JDK. WebSphere was only 1.3.1 at the time, and our applications required 1.4.x. I need the flexibility to change the JDK as needed.

Subject: RE: Apache or WebSphere

Doug,When you say “SSO doesn’t work between Tomcat and Domino”, you mean that LtpaToken doesn’t work between Tomcat and Domino and not SSO. Remember thaere are MANY ways that you can achieve SSO and an LtpaToken is only one of them.

I am aware of DIIOP as a means of sync between Domino and Tomcat–too limiting for my purposes I am afraid.

I still do not understand why the JDK is a problem?

Regards

Rolf Pfotenhauer

Subject: RE: Apache or WebSphere

Hi Rolf,

What are the other ways of achieving SOO between Domino and Tomcat?

Thanks.

Deepa