Erlang/BEAM in Production

The Erlang virtual machine was built for telecom switches: millions of

concurrent connections, hot code reloading, fault tolerance. Forty years

later, it's the best runtime for a surprising range of problems.

Key Entries

What happens when you throw 128 cores at the BEAM.

Bringing OTP supervision trees to embedded systems.

The actor model applied to LLM orchestration.

Why BEAM

1. Lightweight processes -- millions of them, each with its own heap

2. Supervision trees -- crash recovery is a first-class concept

3. Hot code reloading -- deploy without downtime

4. Pattern matching -- elegant protocol handling

5. Distribution -- built-in clustering across nodes

The actor model in BEAM maps directly to multi-agent AI systems.

Each agent is a GenServer. The supervisor restarts crashed agents.

Message passing between agents is just `send/2`.

Connections

as the runtime for agent systems