Node.js CPU and Heap Profiling with Shareable Flame Graphs

Watt Admin 1.0.0 introduces Recording Mode for Node.js applications running on Platformatic Watt. The feature enables capturing complete performance sessions with CPU and heap profiling, generating interactive flame graphs, and packaging everything into a single offline HTML file. It collects comprehensive metrics including memory usage, CPU utilization, event loop health, HTTP performance, and connection pool statistics. Developers can record sessions during specific scenarios, analyze bottlenecks through flame graphs, and share the self-contained HTML bundles with team members without requiring any setup. The tool uses V8's built-in profilers and stores data in pprof format for industry-standard analysis.