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=== Key Features === The BEAM virtual machine offers several key features that make it ideal for building distributed, fault-tolerant systems: ==== Process Isolation ==== One of the fundamental concepts of the Erlang virtual machine is process isolation. Each Erlang/Elixir process runs in its own lightweight process, separate from the operating system processes. These processes communicate with each other using message passing, allowing for concurrent execution while maintaining a high level of isolation. ==== Scheduler and Preemptive Scheduling ==== The virtual machine utilizes a scheduler to manage the execution of lightweight processes. It employs preemptive scheduling, meaning that any process can be interrupted and temporarily suspended to allow other processes to execute. This ensures fair execution and prevents processes from monopolizing system resources. ==== Distribution ==== The virtual machine includes built-in support for distributed computing. Processes can communicate and synchronize with each other across a network of nodes, enabling the development of highly scalable and fault-tolerant distributed systems. ==== Fault Tolerance ==== One of the most distinguishing features of the Erlang/BEAM ecosystem is its focus on fault tolerance. The virtual machine provides mechanisms such as process supervision and error handling, making it easy to build robust systems that can recover from failures gracefully.
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