Erlang is perfectly suited for a modern distributed world. Part of this world is also a relatively new kind of client/server paradigm, namely Peer-to-Peer communication. We believe that this kind of communication is important to the modern internet and hence, the eTorrent project was born to gauge the usefulness of Erlang in a heavily distributed Peer-to-peer setting.
This talk is about using Erlang for implementing Peer-to-Peer clients. I claim Erlang made us write an efficient BitTorrent client in a fraction of the effort compared to other clients. I claim our client is more robust than the competition for normal operation. And I claim the Erlang mentality fits the Peer-to-Peer model well. I also explain how we utilize the Erlang platform to implement the client in an OTP-idiomatic way, and how we differ from the mainstream implementations.