Creating a data strategy

One the most important responsibilities of a software system is to manage data. There are many types of data, and most of the data, should survive any failure of the system or you should be able to reconstruct it. Data often has complex relationships with other data. This is very explicit with relational databases, but exists in other types of data, too. Monoliths typically use large data stores that keep all the related data and, as a result, can perform queries and transactions over the entire set of data. Microservices are different. Each microservice is autonomous and responsible for its data. However, the system as a whole needs to query and operate over data that is now stored in many independent data stores and managed by many different services. Let's examine how to address this challenge using best practices.