Editing Distributed Systems (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Distributed System''' — A collection of independent computers that appears to its users as a single coherent system.
* '''Node''' — A single computer or process within a distributed system.
* '''Scalability''' — The ability of a system to handle more work by adding more resources (e.g., adding more servers).
* '''Availability''' — The percentage of time a system is "Up" and responding to requests (e.g., "Five Nines" = 99.999% uptime).
* '''Fault Tolerance''' — The ability of a system to continue operating even when one or more components fail.
* '''Consensus''' — The process by which all nodes in a system agree on a single value or state (e.g., the Paxos or Raft algorithms).
* '''Latency''' — The "Delay" or time it takes for a message to travel from one node to another.
* '''Throughput''' — The amount of work (requests) a system can handle per second.
* '''Load Balancer''' — A device that acts as a "Traffic Cop," distributing incoming requests to different servers so no one server is overwhelmed.
* '''CAP Theorem''' — The fundamental rule that a distributed system can only provide two out of three: Consistency, Availability, and Partition Tolerance.
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