Datapower SOMA Calls
The primary administration automation mechanism on IBM WebSphere DataPower appliances is the XML Management Interface. The XMI interface allows one to make SOMA (SOAP Configuration Management, assuming SOMA = SOap MAnagement) calls to perform various administration tasks. How to perform these…
DataPower Access Rental—Maybe DataPower in the Cloud?
Ever since I was first started working with IBM WebSphere DataPower I was looking around for someone that was offering access to a IBM WebSphere Datapower, I was looking around for someone that was offering access to an Internet-facing appliance that I could use for experimenting and learning. I…
WebSphere DataPower Roles and Responsibilities…
DataPower is a weird (but, wonderful) beast. It has a tendency to break some of the traditional IT silos that develop within infrastructure groups. That can lead to a lot of friction and amusing arguments in which everyone is simply talking past one another. In this post, I want to describe the…
OSI 7-Layer Network Model
I’ve been playing with Cisco switches and routers recently at home to get a handle on VLANs-more about VLANs later. Some people I know who have gotten involved in DataPower started out in system administration or networking and worked their way up the technology stack to SOA Appliances (WebSphere…
XSLT & XPath
XSLT is the only scripting language supported by WebSphere DataPower appliances. It is the only way to customize DataPower functionality and behavior. So, anyone that works with DataPower for a while will sooner be writing XSLT stylesheets.
Websphere v6.x Classloaders
Building on the ideas introduced in the last article, a J2EE Application servers classloaders are explored in this installment. In particular, Websphere Application Server v.6.x Classloaders are introduced. The J2EE Spec provides some guidance regarding J2EE Application Servers, but as with so many…
EJB vs. Web Services
This article is by no means an exhaustive discussion on the subject of Web Services and EJBs. But, I have often found many of the points I bring up here missing from meaningful debate. Researching this article also gave me an opportunity to go over material I've been wanting to read for a while now.
Achieving highly available HTTP database session persistence spanning multiple cells with Websphere v6.1
Websphere can provide HTTP Session data replication across multiple clusters and cells by using database session persistence.