Node.js - Worker Threads
You have a Node.js server that handles many HTTP requests and also performs heavy image processing. How should you design your app using workers and cluster for best performance?
You have a Node.js server that handles many HTTP requests and also performs heavy image processing. How should you design your app using workers and cluster for best performance?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand cluster for scaling servers
Cluster creates multiple processes to handle many HTTP requests efficiently by using multiple CPU cores.Step 2: Use workers for CPU-heavy tasks
Heavy image processing should run in worker threads to avoid blocking the event loop in each server process.Step 3: Combine cluster and workers
Run cluster to scale server processes, and inside each process, use workers for heavy computation tasks.Final Answer:
Use cluster to run multiple server processes and workers inside each process for image processing -> Option BQuick Check:
Cluster for scaling + workers for CPU tasks [OK]
Quick Trick: Cluster scales servers; workers handle heavy tasks inside each process [OK]
Common Mistakes:
- Doing heavy tasks in main thread blocking requests
- Using only workers without clustering for many requests
- Ignoring multi-core CPU benefits
Master "Worker Threads" in Node.js
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