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Intermediate Topic 24 of 51 Concurrency & Parallelism

Communicating Sequential Processes

Concurrency via channels between processes.

How it works

CSP structures programs as independent processes communicating via synchronous channels ("do not communicate by sharing memory; share memory by communicating"), the model behind Go channels and select.

Where it is used

Pipelines and fan-in/fan-out.

Common pitfall

Goroutine leaks when channels are never closed or read.

Where it fits in the course

Communicating Sequential Processes is topic 24 of 51 in Concurrency & Parallelism, rated Intermediate. It follows Actor Model. The next topic is Go Goroutines and Channels.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the Concurrency & Parallelism quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Communicating Sequential Processes?
Concurrency via channels between processes. It belongs to Concurrency & Parallelism and is an intermediate-level topic.
Where do people use Communicating Sequential Processes?
Pipelines and fan-in/fan-out.
What is the most common mistake with Communicating Sequential Processes?
Goroutine leaks when channels are never closed or read.
What should I learn before this topic?
Start with Actor Model, the topic just before it in Concurrency & Parallelism.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Concurrency & Parallelism quiz.
Is Communicating Sequential Processes hard to learn?
It is an Intermediate topic. Be comfortable with the Beginner topics in this area first, then read the common pitfall carefully, since it is where most mistakes happen.
How long does it take to learn Communicating Sequential Processes?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Communicating Sequential Processes?
Actor Model, Go Goroutines and Channels, Green Threads are closely connected. The full list is in the related topics section of this page.
What should I study after Communicating Sequential Processes?
Continue with Go Goroutines and Channels, the next topic in Concurrency & Parallelism.

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