World Congress 2025

Node.js: More Threads Than You Think

July 10, 2025 15:30 – 16:00 Β· 30 min Stage 9

What this session covers

Node.js was announced in 2009 as a single-threaded JavaScript runtime. In 2018, it became multi-threaded, and no one noticed.

What can worker_threads do? What are they useful for? What’s the best way of communicating between two threads? How can you leverage multi-threading to improve the performance of your application? How can we make a thread wait for another?

In this session, we will cover the key Node.js APIs and then discuss some useful techniques and ecosystem modules that you can start using today.

performance javascript node.js

World Congress 2025

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