What's an Aggregate Root?

Question

I\'m trying to get my head around how to properly use the repository pattern. The central concept of an Aggregate Root keeps coming up. When searching both the web and Stack

Answer 1

In Erlang there is no need to differentiate between aggregates, once the aggregate is composed by data structures inside the state, instead of OO composition. See an example: https://github.com/bryanhunter/cqrs-with-erlang/tree/ndc-london