Other links relating to debugging memory related issues in NodeJS which I have bookmarked (in no particular order):

* http://www.willvillanueva.com/the-node-js-profiling-guide-th...

* https://github.com/felixge/node-memory-leak-tutorial

* https://strongloop.com/strongblog/node-js-performance-tip-of...

* https://github.com/bnoordhuis/node-heapdump

* http://www.nearform.com/nodecrunch/self-detect-memory-leak-n...