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Which scenario benefits most from using worker threads in Node.js?

easy📝 Conceptual Q2 of 15
Node.js - Worker Threads
Which scenario benefits most from using worker threads in Node.js?
AServing static files faster
BHandling multiple HTTP requests asynchronously
CReading files from disk asynchronously
DPerforming heavy calculations without freezing the app
Step-by-Step Solution
Solution:

  1. Step 1: Identify tasks that block the main thread

    Heavy calculations block the single main thread causing delays.

  2. Step 2: Worker threads usage

    Worker threads run these calculations in parallel, keeping the app responsive.

  3. Final Answer:

    Performing heavy calculations without freezing the app -> Option D

  4. Quick Check:

    Best use case = Heavy CPU tasks [OK]
Quick Trick: Use worker threads for CPU-heavy tasks, not I/O [OK]
Common Mistakes:
  • Thinking worker threads speed up async I/O
  • Confusing worker threads with cluster module
  • Assuming static file serving needs worker threads

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