Answer
Traditional servers create threads per request. Node.js uses a single-threaded event loop and offloads heavy tasks to worker threads, making it efficient for I/O-heavy workloads.
Quick Answer
Traditional multi-threaded servers (Java, .NET) create a new thread per request — threads are expensive (1–2MB stack each) and context-switching adds overhead. Node.js uses one thread and the event loop — instead of waiting, it registers callbacks and moves on. For I/O-heavy workloads, this handles far more concurrent requests with far less memory.
S
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