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== Concurrent Computing in Elixir == [[File:Elixir logo.svg|thumb|right|200px|Elixir programming language logo]] Concurrent computing is a fundamental feature of the Elixir programming language. Elixir provides robust abstractions and tools for building highly concurrent and distributed systems. === Concurrency versus Parallelism === Concurrency and parallelism are often used interchangeably, but they have different meanings in the context of computing. Concurrency refers to the ability of an application to execute multiple tasks simultaneously, making progress on each task even if they are not fully completed in order. Parallelism, on the other hand, refers to the ability of an application to execute multiple tasks simultaneously by utilizing multiple processing units. Elixir's design philosophy emphasizes concurrency by using lightweight processes, known as "actors," instead of traditional OS threads. These processes are managed by the Elixir runtime and communicate with each other through message passing, allowing for highly concurrent and fault-tolerant systems. === Processes and Concurrency === In Elixir, processes are the basic building blocks of concurrent programming. Processes are isolated and lightweight, and they communicate with each other through message passing. Elixir's process model provides features such as: * **Spawn**: Creating a new process * **Send/Receive**: Sending and receiving messages between processes * **Link**: Establishing links between processes to monitor each other's lifetime * **Monitor**: Monitoring processes for failures and receiving notifications * **Task**: Running computations asynchronously and retrieving their results === Concurrency Primitives === Elixir provides several powerful concurrency primitives to facilitate concurrent programming: * **Processes**: As outlined earlier, lightweight isolation units that communicate through message passing. * **Agents**: Mutable state containers that allow processes to share and update state. * **GenServer**: A generic server behavior for building concurrent and fault-tolerant systems. * **Tasks**: Lightweight units of work that execute asynchronously. * **Streams**: A lazy and composable abstraction for working with collections in a concurrent manner. * **Supervisors**: Supervision trees for managing the lifecycle and fault tolerance of processes. === Distributed Computing === Elixir makes it easy to build distributed systems by providing abstractions for remote procedure calls (RPC), distributed registries, and distributed process groups. By harnessing Elixir's distributed features, developers can build fault-tolerant, highly available systems that span multiple machines and geographic locations. === Concurrency in Practice === Using Elixir's concurrency primitives, developers can build powerful and scalable applications. Whether it's building a high-throughput web application or implementing a fault-tolerant messaging system, Elixir's concurrency features provide the necessary tools to tackle complex problems. === See Also === * [[Concurrency]] * [[Distributed_Computing_in_Elixir|Distributed Computing in Elixir]] * [[Elixir (programming language)]] == References == *[https://elixir-lang.org/docs.html Elixir Documentation] *[https://github.com/elixir-lang/elixir Elixir GitHub Repository]
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