RethinkDB is an open-source JSON database for real-time apps. It pushes JSON data to your apps in real-time from the database whenever a change occurs in the database tables that you subscribe to their real-time feeds – changefeeds. Despite that the changefeeds lies at the heart of RethinkDB's real-time functionality, you can skip this functionality if you want to. You can use RethinkDB just like MongoDB to store and query your NoSQL database.
Even though you can use the Change Streams in MongoDB to access the real-time data changes but it requires some configuration to get it started, while the real-time feeds are ready for use by default in RethinkDB and you can tap in right away without any configuration. Let's get started by installing the RethinkDB server in your system and see how you can use it in the next section.
Installing RethinkDB Server
At the time of writing this book, the current stable version of RethinkDB is 2.4.0 (Night Of The Living...
