Implementing AWS: Design, Build, and Manage your Infrastructure

The context object

As discussed earlier, the context object is a really useful utility when it comes to obtaining runtime information about your function. The context object can provide information such as the executing function's name, the time remaining before Lambda terminates your function's execution, the log name, and the stream associated with your function and much more.

The context object also comes with its own methods that you can call to correctly terminate your function's executions such as, context.succed(), context.fail(), and context.done(). However, post April 2016, Lambda has transitioned the Node.js runtime from v0.10.42 to v4.3 which does support these methods. However, it encourages the use of callback() function for ...