This pattern combines two patterns, using both the command query responsibility separation (CQRS) pattern and the event sourcing pattern. The CQRS pattern separates responsibilities of the command and query models. The event sourcing pattern takes advantage of asynchronous event-driven communication to improve the overall user experience.
You can use CQRS and Amazon Web Services (AWS) services to maintain and scale each data model independently while refactoring your monolith application into microservices architecture. Then you can use the event sourcing pattern to synchronize data from the command database to the query database.
This pattern uses example code that includes a solution (*.sln) file that you can open using the latest version of Visual Studio. The example contains Reward API code to showcase how CQRS and event sourcing work in AWS serverless and traditional or on-premises applications.
