How to do Node.js application resources profiling

Question

While building Node.js applications, how to monitor my code behaviour in memory and IO, knowing for sure what blocks and and what doesn't, what most consumes my memory/processor at what operation.

Answer 1

You can use PM2 to monitor your application process. If you want profiling, use Keymetric (also by PM2 team). It also has other benefits like auto restart if your application exited.