Node.js Memory Debugger FAQs

Question 1

How do I distinguish between a memory leak and high memory usage?

Accepted Answer

A leak is characterized by heap usage that grows monotonically over time and never stabilizes or decreases, even after traffic subsides. Normal usage typically fluctuates or stays bounded as the garbage collector cleans up objects.

Question 2

Can I use this skill to capture snapshots in a production environment?

Accepted Answer

Yes, the skill provides methods to trigger heap snapshots via process signals (SIGUSR2) or authenticated admin endpoints, allowing you to debug live services without a restart.

Question 3

What are the most common causes of leaks in Node.js?

Accepted Answer

The most frequent culprits are accumulated EventListeners that are never removed, unbounded internal caches or arrays, active timers that aren't cleared, and closures that inadvertently hold references to large objects.

Question 4

How do I fix high Garbage Collection pressure?

Accepted Answer

High GC pressure can be resolved by reducing object allocation churn, avoiding the creation of large long-lived objects, or increasing the --max-old-space-size flag if the application legitimately requires more heap memory.

Node.js Memory Debugger

Key Features

Use Cases

Node.js Memory Debugger

Key Features

Use Cases