https://nodejs.org/en/docs/guides/debugging-getting-started/
$ node --inspect-brk src/app.js cache
https://nodejs.org/docs/latest-v14.x/api/inspector.html
$ node src/inspector.js
https://nodejs.org/docs/latest-v14.x/api/perf_hooks.html
https://nodejs.org/docs/latest-v14.x/api/async_hooks.html
$ node src/perf-hooks.js
https://nodejs.org/en/docs/guides/simple-profiling/
$ node --prof src/app.js cache
$ node --prof-process isolate-0x4ae79a0-78045-v8.log > processed.txt
https://nodejs.org/en/docs/guides/dont-block-the-event-loop/
https://nodesource.com/blog/tracking-down-performance-bottlenecks-nsolid-deoptigate