Erlang / OTP Telecom (Erlang, Docker) overview

A telecom-grade service built on Erlang/OTP, leveraging the BEAM virtual machine's preemptive scheduling, lightweight process model, and built-in distribution primitives for fault-tolerant, soft-real-time systems. OTP supervision trees provide automatic restart of failed processes, while Mnesia delivers a distributed, replicated database tightly integrated with the runtime. Cowboy serves as the HTTP/WebSocket server. Erlang's hot code loading enables zero-downtime deployments, and its "let it crash" philosophy produces systems that self-heal under failure. Docker containers package releases built with Rebar3. The tradeoff is Erlang's unfamiliar syntax and the BEAM's limited raw throughput for CPU-bound work, but for concurrent, distributed, always-on services, nothing else comes close.