erlang
Erlang
Erlang powered WhatsApp and the telecom backbone. OTP 27 (2024) adds a JSON module and triple-quoted strings. It is the foundation of Elixir.
When to Use
- 99.9999999% Reliability: Hot code reloading, supervision trees.
- Massive Concurrency: Lightweight processes (millions per node).
- Distributed Systems: Distributed Erlang nodes connect natively.
Core Concepts
OTP
Open Telecom Platform. Behaviors like gen_server (Generic Server).
Let it Crash
Don't catch exceptions. Let the supervisor restart the process.
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