Memory leaks are like parasites of an application, they creep up into your systems unnoticed and don't cause any harm initially, but once leaks are strong enough they can cause catastrophic problems to your application such as high latencies and crashes. In the article A Practical Guide to Memory Leaks in Node.js we will look at what are memory leaks, how javascript manages memory, how to identify leaks in a real world scenario and eventually how to fix them.