Multithreading in Javascript (series): Locks Without Libraries - Peterson’s Algorithm in Node.js

📰 Medium · JavaScript

Learn to implement Peterson's Algorithm for locks in Node.js without libraries using SharedArrayBuffer and Worker Threads

advanced Published 17 Apr 2026

Action Steps

Implement Peterson's Algorithm using SharedArrayBuffer to synchronize access to shared resources
Create a Worker Thread to demonstrate the lock mechanism
Use the Atomics API to update shared variables
Test the lock implementation with multiple threads
Compare the performance of Peterson's Algorithm with other lock algorithms

Who Needs to Know This

Backend developers and engineers working with Node.js and multithreading can benefit from this article to improve concurrency control in their applications

Key Insight

💡 Peterson's Algorithm can be used to implement locks in Node.js without relying on external libraries, ensuring efficient concurrency control