Glossary term
What is worker thread? Meaning for developers
A second JavaScript thread in the same Node process, used to run CPU-heavy work without freezing the event loop.
Learn it properly · Node.js From ZeroLesson 7: Concurrency: Promises, Worker Threads, Clusters and Child ProcessesPromise.all and limits, CPU work in worker_threads, cluster and why containers often replace it, and a timed comparison.