DevConf.IN'19

Memory Leaks leading to undesired growth and exhaustion of memory are by far the most common production problem reported on enterprise scale Node applications. Closure, a powerful semantic feature in functional programs which are used pervasively in Node.js programs to support asynchronous and event driven programming model, is a prominent source of unanticipated memory leaks. In this presentation, I will explain three most common use cases where Closures are used in Node. The intent is to illustrate critical importance of closures in the functional programming, demonstrate peculiar ways in which closures retain memory resources and provide best practices in addressing those scenarios to help developers write efficient Javascript programs.