Congratulations! You are almost halfway through this journey. You are at the point where it is necessary to meet the component responsible for information persistence; the sometimes neglected “data layer” will take on a new dimension when you have finished this chapter. It’s time to meet Apache Cassandra, a NoSQL database that provides high availability and scalability without compromising performance.
We suggest that you have your favorite terminal ready to follow the exercises. This will help you become familiar with the tools faster.