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Why is it important to take multiple heap snapshots over time when diagnosing memory leaks in Node.js?

hard📝 Conceptual Q10 of 15
Node.js - Debugging and Profiling
Why is it important to take multiple heap snapshots over time when diagnosing memory leaks in Node.js?
ABecause a single snapshot shows all leaks immediately
BTo observe how memory usage and object retention change over time
CTo reduce CPU usage during profiling
DBecause snapshots automatically fix leaks
Step-by-Step Solution
Solution:

  1. Step 1: Understand memory leak behavior

    Leaks cause memory to grow gradually; a single snapshot shows only one moment.

  2. Step 2: Importance of multiple snapshots

    Taking snapshots at intervals helps detect increasing retained objects and pinpoint leaks.

  3. Final Answer:

    To observe how memory usage and object retention change over time -> Option B

  4. Quick Check:

    Multiple snapshots show memory growth trends [OK]
Quick Trick: Multiple snapshots reveal leaks by showing growth [OK]
Common Mistakes:
  • Thinking one snapshot shows all leaks
  • Believing snapshots fix leaks automatically
  • Confusing snapshots with CPU profiling

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