Node.js FAQ: Top Questions

42. How does V8 memory management work in Node.js?

V8 memory management in Node.js governs how the V8 JavaScript engine allocates and reclaims memory, using a generational garbage collector (GC) to optimize performance.

Heap: Young (short-lived objects) and old (long-lived) generations.
GC: Scavenge (young), Mark-Sweep/Compact (old).
Tuning: --max-old-space-size , --max-semi-space-size .
Use Case: Optimizing memory-intensive applications.

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