Suggest an editImprove this articleRefine the answer for “What tasks is a queue often used to solve?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)A **queue** is used wherever elements need to be processed in the order they arrive or by level, without going back. **Key point:** typical tasks include breadth-first graph traversal (BFS), task scheduling, processing data streams, modeling real-world queues, asynchronous event handling, and buffering.Shown above the full answer for quick recall.Answer (EN)ImageA queue is used wherever elements need to be **processed in the order they arrive** or **by level**, without going back. ## Main typical tasks 1. **Breadth-first graph traversal (BFS)**: finding the shortest path, determining connected components, finding distances between vertices. 2. **Task scheduling**: for example, processing processes in an OS or jobs on a printer: whoever arrived first is handled first. 3. **Processing data streams**: network packets, messages in RabbitMQ, Kafka, and similar message queues. 4. **Modeling real-world queues**: for example, customers at a bank, requests to a server. 5. **Asynchronous operations and event handling**: the event queue in browsers or microservices. 6. **Buffering**: storing data that arrives faster than it can be processed (for example, streaming audio or video). In all these cases, it is important that elements **are processed strictly in the order they arrive**, and that is exactly what a queue provides.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.