Queues

Lesson in the Computer Science Roadmap · Stage 18: System Design

Last updated 14 September 2026

What is Queues?

Messaging queues are a common way to decouple systems. They are used to decouple the producer of a message from the consumer of a message. This allows the producer to send a message and not have to wait for the consumer to process it. It also allows the consumer to process the message at their own pace.

Study this in the interactive course See the whole Computer Science roadmap

Free resources to learn Queues

ArticleMessage Queues - System Design
VideoWhat is a Message Queue?
VideoWhat is a Message Queue and Where is it used?

Queues: common questions

Can I learn Queues in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Queues in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Queues tutorial for beginners?

It is lesson 134 of 188 in the free Computer Science roadmap, in stage 18, System Design. If you are new to Computer Science, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.