They wrote Finagle which is a very well written and highly regarded Scala micro-service framework that is used by other companies such as LinkedIn, Soundcloud etc. Likewise Pelikan is an excellent caching service.
We know that Scala is a proven, high-performance, type-safe language that is optimised for concurrency and stability. So it's not like their tech stack is written in Ruby and needs to be re-written in Rust or Go. It's already performant.
They wrote Finagle which is a very well written and highly regarded Scala micro-service framework that is used by other companies such as LinkedIn, Soundcloud etc. Likewise Pelikan is an excellent caching service.
We know that Scala is a proven, high-performance, type-safe language that is optimised for concurrency and stability. So it's not like their tech stack is written in Ruby and needs to be re-written in Rust or Go. It's already performant.