NetEase Cloud Music Tech Team

Mar 17, 2021 · Backend Development

Analyzing Node.js .heapsnapshot Files and Using heapquery for Memory‑Leak Investigation

The article shows how to generate a Node.js V8 heap snapshot with v8.getHeapSnapshot, explains the JSON‑like .heapsnapshot structure of nodes, edges, and strings, and demonstrates using the heapquery tool to import the data into SQLite for SQL queries that locate and trace memory‑leaking objects such as a HugeObj instance.