Big data involves data collection from remote sensing devices and networks, Internet-powered data streams, systems, devices and many other sources that brings massively heterogeneous and continuous big data streams. You need to design the solution to effectively handle data to store, index, and query the data sources which poses big challenges. Big Data properties are commonly referred as 6Vs that is outlined below which includes volume, velocity, variety, veracity, variability and value.

What is reactive extensions and how is it used in Angular 2?  is the web site you need to visit to learn more about Reactive extensions.Any time you are connecting to the server, the ng Team is using the classes from ReactiveX. Remember, the observer pattern from the good old days, it is coming back again with the iterator pattern throwing in functional programming 🙂