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System Architecture

XMPP PubSub: a great compliment to Atom/RSS

Posted in Geek, Social Computing, System Architecture, XMPP on July 22nd, 2008 by leodirac – 8 Comments

I spent the day yesterday at XMPP Summit #5 alongside OSCON in Portland. It was a great chance to catch up with old friends and meet a few new ones. But my favorite part was the break-out discussion of XMPP PubSub as it relates to micro-blogging. We discussed what hopefully will emerge as a standard way to associate an existing Atom/RSS feed with an XMPP PubSub Node. First some background on the relevant technologies. Feel free to skip ahead if you understand this stuff. PubSub 101: Push vs Pull PubSub is short for “publish subscribe” which is a common design…

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Isolate your Continuous Integration Server!

Posted in Electronic Security, Software Engineering, System Architecture on October 20th, 2006 by leodirac – Comments Off on Isolate your Continuous Integration Server!

Here’s a little food for thought about hacking into a development system. If you wanted to gain control of somebody’s network how would you do it? Well, you’d probably try to figure out a way to get one of the computers on the inside of their firewall to run some code for you. If you could get it to run an arbitrary block of code that you wrote, then you’re probably pretty close to 0wning it. Now think about the continuous integration server in your development farm. What does it do? Whenever anybody checks in new code, it runs all…

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