node-gc-watch node-gc-watch helps you attach your own event handlers to track when a GC is being fired in your Node.js application. Currently it provides a beforeGC and afterGC event. Installation npm install gc-watch --save Usage var gcWatch = require('gc-watch'); gcWatch.on('beforeGC', function() { // detect memory usage, push stats etc.}); gcWatch.on('afterGC', function() { // calculate memory freed by GC, etc.}); License MIT