Materialized Views and Microservices

In computing, a materialized view is a database object that contains the results of a query. For example, it may be a local copy of data located remotely, or may be a subset of the rows and/or columns of a table or join result, or may be a summary using an aggregate function.

However when dealing with microservices that have well defined domain boundaries and own their own datasets the

Why?

When data is stored it’s often stored in a format that feels native to the format of the data itself or in a format that manages data size and of data integrity

The downside is that this can have negative effect on queries, When a query only needs a subset of the data from some entities, such as a summary of orders for several customers without all of the order details, it must extract all of the data for the relevant entities in order to obtain the required information.