Erlang's Secret Sauce: It's Not Lightweight Processes, It's Behaviors
This post revisits the core ideas behind the Erlang programming language. The author argues that Erlang's success isn't solely due to its lightweight processes and message passing, but rather its unique "behaviors." Behaviors are similar to interfaces in other languages; they provide a set of predefined function signatures. Developers only need to implement these signatures to gain access to advanced features like concurrency and fault tolerance. This allows developers to focus on business logic without dealing with low-level concurrency details. The post uses examples of gen_server, gen_event, and supervisor behaviors to illustrate their importance in building reliable distributed systems. It also explores how to adapt Erlang's behavior pattern in other languages to improve software reliability and testability.
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