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Building Modern Business Applications: Reactive Cloud Architecture for Java, Spring, and PostgreSQL
book

Building Modern Business Applications: Reactive Cloud Architecture for Java, Spring, and PostgreSQL

by Peter Royal
December 2022
Intermediate to advanced content levelIntermediate to advanced
189 pages
5h
English
Apress
Content preview from Building Modern Business Applications: Reactive Cloud Architecture for Java, Spring, and PostgreSQL
© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023
P. RoyalBuilding Modern Business Applicationshttps://doi.org/10.1007/978-1-4842-8992-1_8

8. High-Level Data Flow

Peter Royal1  
(1)
Sherman Oaks, CA, USA
 

Given our self-imposed constraint of using GraphQL, in this chapter, we’ll consider the high-level data flow of a system that utilizes it to back the API contract with user interfaces and other collaborating systems. I’ll start with an explanation of Event Sourcing (ES) and Command Query Responsibility Segregation (CQRS), followed by a primer on how to think in terms of GraphQL’s schema language, and finally bring all three concepts together.

Event Sourcing and CQRS

As alluded to when discussing time, we will ...

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ISBN: 9781484289921Purchase LinkPublisher Website