Answer
Clustering creates multiple Node processes sharing one port. Worker threads share memory inside one process. Clustering boosts request throughput; workers boost compute tasks.
Quick Answer
Clustering forks separate OS processes — each process has its own memory, event loop, and V8 instance. Worker threads run in one process with shared memory and their own V8 instances. Clustering is for scaling network request handling across CPU cores; worker threads are for offloading CPU-intensive work to avoid blocking the event loop.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ