Understanding Multithreading, Mutation, Concurrency, Race Condition, and Deadlock in JavaScript

Understanding Multithreading, Mutation, Concurrency, Race Condition, and Deadlock in JavaScript

This in-depth Medium article breaks down complex computer science concepts — like multithreading and concurrency — in the context of JavaScript, helping developers understand what’s going on under the hood of asynchronous behavior.

🧵 What You’ll Learn:

• The reality of JavaScript’s single-threaded model
• What mutation means in programming and why it matters
• How concurrency and parallelism differ
• Why race conditions happen and how to avoid them
• What deadlocks are and how to prevent them in async code

🧠 Why Read This Article?

• Great for clarifying tricky interview topics
• Uses clean examples and simple metaphors
• Helps demystify low-level behavior in JavaScript runtimes
• Connects browser concepts with core CS theory

✅ Requirements

• Intermediate JavaScript knowledge
• Familiarity with async/await, callbacks, or Promises is helpful

👨‍💻 Who Is It For?

• Frontend and backend JavaScript developers
• Devs preparing for technical interviews
• Anyone curious about how JavaScript handles concurrent tasks

Sharpen your async mindset — read the article and level up your JavaScript thinking!