Queue
A queue is a fundamental data structure in computer science that follows the First-In-First-Out (FIFO) principle, where elements are added at the rear (enqueue) and removed from the front (dequeue). It is widely used for managing tasks, requests, or data in a sequential order, ensuring fair processing and preventing resource contention. Queues are essential in scenarios like job scheduling, message passing, and buffering in systems and applications.
Developers should learn and use queues when building systems that require ordered processing, such as task queues in web servers, message brokers in distributed systems, or event handling in real-time applications. They are crucial for decoupling components, managing asynchronous operations, and handling high loads by buffering requests, which improves scalability and reliability in software architecture.