Whether you're exploring functional programming or scaling real-time systems, this is a must-read.

♻️ Repost to help others build more resilient systems.

Erlang processes are lightweight (~300 words each). That’s how WhatsApp scaled to 2M+ connections per server.

If you’re designing systems that need to handle millions of connections with 99.999% uptime, Erlang isn’t just a choice—it’s a cheat code.