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== Key Features == === Actor Model === Elixir follows the [[Actor Model]], which is a paradigm for concurrent computation. The Actor Model represents computational entities as individual actors that communicate with each other by exchanging messages. Actors have their own state and can perform computations in parallel, making them ideal for building concurrent systems. === Concurrency Primitives === Elixir provides several concurrency primitives that make it easier to build concurrent applications: * [[Process (Elixir)|Processes]]: Elixir's lightweight processes are the building blocks of concurrency. They are isolated, share-nothing entities, and communicate by sending and receiving messages. * [[GenServer]]: The GenServer behavior is a generic server that manages state and handles incoming messages. It simplifies the implementation of fault-tolerant, concurrent processes. * [[Task (Elixir)|Tasks]]: Tasks allow for the parallel execution of code. They are used to spawn lightweight processes that return results asynchronously. * [[Agent (Elixir)|Agents]]: Agents provide a simple way to manage state within a process. They encapsulate state and allow for coordinated access and modification. === Asynchronous Message Passing === Elixir promotes asynchronous message passing between processes. This approach allows processes to communicate without blocking each other, leading to highly responsive and scalable systems. Message passing is facilitated by the built-in '''!''' operator and the '''receive ... end''' construct. === Supervision Trees === Supervision trees are a key aspect of Elixir's fault-tolerant design. By organizing processes in a hierarchical manner, supervisors can monitor and restart failed processes automatically, ensuring the overall stability of the system.
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