Application Security Models
I like to start system design (at the application level) with the security model that will be used to protect the system. Application security models have several attributes that need to be addressed at each layer of the application.
XML Digital Signature (an Example)
In the last post, we looked at the steps involved in generating a digital signature using the XML Digital Signature spec. The algorithm to produce a signature and validate it were explored but no examples were given. In this post, we’ll look at an example that is given in the XML Digital Signature…
Three Internal Architectures—Designs for DataPower Deployments
I have been in several different shops that are either deploying DataPower or are a few years after deploying DataPower. I’ve also had opportunities to talk to numerous different DataPower technical resources about how they have utilized DataPower. In the post, I want to describe what I’ve seen as…
Recommended Reading Material for SOA
Following up on the recommended reading lists I’ve posted recently, this post contains a list of the books and specifications that I direct people to about SOA.
What is an ESB?
In the past year, I have stood in a conference room at more than one client fielding a question along the lines of exactly what is an ESB? I’ve found that there is a wide variety of impressions about what exactly makes something an ESB. I’m hardly the first person to post something on the Internet…
Java Virtual Machine Classloaders
Classloaders are responsible for finding and loading classes that are requested in Java code executed inside a Java Virtual Machine. Classloader-related issues are among the most difficult to troubleshoot in the Java/J2EE technology stack.