I posted this in another thread on what I like about Erlang (I'll shamelessly copy and paste it here): * A better concurrency model. Lightweight processes vs c

I posted this in another thread on what I like about Erlang (I'll shamelessly copy and paste it here): * A better concurrency model. Lightweight processes vs callbacks and futures. Or even channels. I find processes as concurrency units maps better to problems I had to solve. So there is less impedance mismatch. That makes a huge deal in a larger project. (eg.: a user request as an isolated process vs a chain of callbacks). OS design got this right years ago -- think how most modern popular operating systems represent concurrency - an isolated process. * Safety & fault tolerance. Processes are isolated. So you can build very robust systems. That simply puts money in your pocket just due to ops costs. A non-critical / experimental part of backend is crashing at 4am and restarting? No, problem, keep sleeping. Rest of the service will stay up and you can fix it in the morning. * Debuggability and inspection. BEAM VM comes with built in ability to debug, inspect and trace out of the box. That has saved so much time (and money) over the years. * Hot code reload. This is a first class feature. We don't rely on it to do upgrades. But it proved invaluable to fix an issues or two for a high value customer without taking down the services. Or simply to add extra logging to monitor a pathological edge case. Some people might prefer Elixir and that's fine, they are great friends. I personally like Erlang, I think it is simpler. Someone new coming from Python or Ruby might like it better and also it has very beginner friendly community. Jose Valim and and other authors really put user-friendliness and approach-ability at the forefront. I really like that, mad props to them.