"On our monolith we needed roughly 150 [Rails] servers to power the more intensive portions of BR. Following our move to Elixir we're now able to power those same functions on five servers and we're probably overprovisioned. We could probably get away with it on two," Marks says.
Once upon a time, Cisco, Ericsson, Klarna, Goldman Sachs, T-Mobile, WhatsApp, Amazon and many other top companies kept a secret. Erlang was that badly kept secret.
Well then, just more cases where it's in wide use but you don't see it or know about it. It's really great it's being used but a bit depressing that no one knows about it as you continually hear "what's Erlang, why should I learn/use it as no one uses it?"
Benefits of Elixir: How Elixir helped Bleacher Report handle 8x more traffic:
Then again Phoenix/Elixir/Erlang are a special kind of beast.
That's 'Billion' with a 'B': Scaling to the Next Level at WhatsApp
Why We Chose Erlang over Java, Scala, Go, C
Which companies are using Erlang, and why?:
Robert Virding:
Second-Order Effects: Energy Hogs: Can World’s Huge Data Centers Be Made More Efficient?