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What does a heap snapshot in Node.js primarily help you identify?

easy📝 Conceptual Q1 of 15
Node.js - Debugging and Profiling
What does a heap snapshot in Node.js primarily help you identify?
ACPU usage spikes
BSyntax errors in code
CNetwork latency issues
DMemory leaks and object retention
Step-by-Step Solution
Solution:

  1. Step 1: Understand heap snapshot purpose

    A heap snapshot captures the memory state of a Node.js process at a moment in time.

  2. Step 2: Identify what heap snapshot reveals

    It shows objects in memory and their references, helping find leaks where objects are not freed.

  3. Final Answer:

    Memory leaks and object retention -> Option D

  4. Quick Check:

    Heap snapshot purpose = Memory leaks and object retention [OK]
Quick Trick: Heap snapshots show what stays in memory over time [OK]
Common Mistakes:
  • Confusing heap snapshot with CPU profiling
  • Thinking it detects syntax errors
  • Assuming it measures network performance

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