[Solved] Identify the issue in this Node.js cluster code snippet:const cluster = require('cluster'); const os = require('os'); if (cluster.isPrimary) { for (let i = 0; i | Node.js

Node.js - Cluster Module

Identify the issue in this Node.js cluster code snippet:

const cluster = require('cluster');
const os = require('os');
if (cluster.isPrimary) {
  for (let i = 0; i <= os.cpus().length; i++) {
    cluster.fork();
  }
}

AThe cluster module is not imported correctly

BThe loop condition uses '<=' causing one extra worker to be forked

Cos.cpus() returns a number, not an array

Dcluster.isPrimary should be cluster.isMaster

Step-by-Step Solution

Solution:

Step 1: Check loop boundary
The loop runs from 0 to os.cpus().length inclusive, which is one too many iterations.
Step 2: Understand os.cpus()
os.cpus() returns an array of CPU core info, so length is the number of cores.
Step 3: Correct loop condition
Use '<' instead of '<=' to avoid forking an extra worker.
Final Answer:
The loop condition uses '<=' causing one extra worker to be forked -> Option B
Quick Check:
Loop should run less than length [OK]

Quick Trick: Use '<' not '<=' in loops over array length [OK]

Common Mistakes:

Using '<=' instead of '<' in loop condition
Confusing cluster.isPrimary with cluster.isMaster (deprecated)
Misunderstanding os.cpus() return type

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Identify the issue in this Node.js cluster code snippet:

Step 1: Check loop boundary

Step 2: Understand os.cpus()

Step 3: Correct loop condition

Final Answer:

Quick Check:

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