Erlang vs Java memory architecture
This is definitively an interesting article. I'm a java developer by trade but am learning Erlang as well. It's a real mind-bend going from an imperative to a functional language. You really have to understand how each style of language wants to work in order to get the most out of it. It's much more than just syntax.
There are several NoSQL data stores that are written in both of these languages as well as map/reduce in both languages. I'm pretty familiar with how the Java VM works and am interested in learning more about the Erlang VM and how this affects each of these data stores.