Udi discusses the issues around multi-threaded processing of messages by a service, specifically that the processing of message received second may be finished before that of the first. This scenario tends to rear its ugly head at higher levels of load and is critical for correctness in high-scalability environments.
When trying to scale agile software development for complex situations, a common stumbling block is how to understand, prioritize, and act on requirements.
Andy and Cal use PHP on the back end and JavaScript on the front end to build the "Flickr News Network" which lets you show pictures from Flickr to augment an article from a given news feed.
Ed and Adam use the Google Web Toolkit—a free, open source framework created to make Ajax easier—to build a mash-up photo viewer that lets you browse any Flickr photo album.
Tag clouds are collections of tags that are presented so that the visual emphasis of each tag corresponds to the relative importance within the collection.
Udi discusses certain methodologies for migrating an architecture from N-Tier to SOA. We'll see what parts can be used almost unchanged, and which N-Tier concepts have no place in this new, service-oriented world.
