Gojko Adzic

Here’s the video of my presentation titled ‘DDD in a distributed world’ from the DDD Exchange 09 conference in London last month. In the presentation, I discuss how domain driven design aggregates help build distributed systems that work better and solve latency, serialization and distribution problems. You can also download the slides and read a shorter version of this presentation.

Distributed systems are not typically a place where domain driven design is applied. Distributed processing projects often start with an overall architecture vision and an idea about a processing model which basically drives the whole thing, including object design if it exists at all. Elaborate object designs are thought of as something that just gets in the way of distribution and performance, so the idea of spending time to apply DDD principles gets rejected in favour of raw throughput and processing power. However, from my experience, some more advanced DDD concepts can significantly improve performance, scalability and throughput of distributed systems when applied correctly. Continue Reading »

At the DDD Exchange conference today in London, Eric Evans presented on “The good, the bad and the ugly” aspects of strategic design. Talking about several efforts to replace legacy systems he has encountered in past, he suggested that these were “traps that good and smart software people are more likely to fall into” [than those with less experience]. According to Evans, none of the conventional approaches to that problem are likely to succeed. Continue Reading »