Introduction to Reactive Data Store

Get introduced to reactive databases and the database we’ll use for this course.


Nobody builds an application without data. It’s as simple as that. Maybe today, we aren’t integrating with that 3rd-party service, or we aren’t securing our pages and API. Maybe we aren’t connecting to a message broker. But if we haven’t hooked up to a database to store and retrieve data, we don’t have a real demo. Data is the lifeblood of applications, and Spring Boot’s top-notch support for Spring Data makes data management not only achievable, but fun.

Why we use reactive data store

Before we start storing things in a database, we must first understand a key requirement of reactive programming. Everything should be reactive. If we build our web controllers and service layer to be reactive, and then call into a blocking database, we have a problem. The thread we’re using could freeze as it waits for a response. Also, because Reactor-based applications don’t have many threads, our whole application could freeze as we wait for the database server to answer our request.

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