How I tracked down a 36GB memory leak in a Claude Code memory server (opens in new tab)

A debugging story about heap snapshots, native memory that --max-old-space-size can't touch, and a WebAssembly filesystem quietly hoarding files. The setup I run a small service that gives a team of Claude Code users one shared memory store. Mechanically it's a Node/Express proxy that wraps a stdio MCP server (ruflo) and exposes it over HTTP. You don't need the product to follow the bug — just one fact: a long-lived Node process serves memory operations, and underneath it uses sql.js (SQLite ...