Which architecture best leverages cluster and worker_threads for optimal performance?
hard📝 Conceptual Q8 of 15
Node.js - Worker Threads
You are designing a Node.js application that must handle high volumes of HTTP requests and perform CPU-intensive data processing. Which architecture best leverages cluster and worker_threads for optimal performance?
AUse a single process without cluster or workers to simplify the design.
BUse only worker threads for both HTTP requests and CPU tasks to avoid process overhead.
CUse cluster only for CPU-intensive tasks and handle HTTP requests in a single process.
DUse cluster to create multiple processes for handling HTTP requests and spawn worker threads within each process for CPU-intensive tasks.
Step-by-Step Solution
Solution:
Step 1: Use cluster for concurrency
Cluster creates multiple Node.js processes to handle many HTTP requests concurrently, leveraging multiple CPU cores.
Step 2: Use worker_threads for CPU tasks
Within each cluster process, spawn worker threads to offload CPU-intensive processing without blocking the event loop.
Final Answer:
Use cluster to create multiple processes for handling HTTP requests and spawn worker threads within each process for CPU-intensive tasks. combines cluster and worker_threads effectively for scalable HTTP handling and parallel CPU work.
Quick Check:
Cluster for processes; workers for CPU tasks inside each process. [OK]
Quick Trick:Cluster for processes, workers for CPU tasks inside them. [OK]
Common Mistakes:
Using only worker threads and ignoring process isolation
Using cluster only for CPU tasks, not for HTTP concurrency
Avoiding cluster and workers altogether in high-load apps
Master "Worker Threads" in Node.js
9 interactive learning modes - each teaches the same concept differently
