I haven't watched but this would be a good guess https://www.youtube.com/watch?v=c12cYAUTXXs https://www.youtube.com/watch?v=c12cYAUTXXs "Scaling with A B: Erla

I haven't watched but this would be a good guess https://www.youtube.com/watch?v=c12cYAUTXXs https://www.youtube.com/watch?v=c12cYAUTXXs "Scaling with A B: Erlang and WhatsApp"