Event Driven Microservices with CQRS, Saga, Event Sourcing (Udemy.com)
Develop Event Driven Microservices using Spring Boot, Axon framework, CQRS, Saga, Event Sourcing patterns
Created by: Madan Reddy
Last updated November 2025
What you will learn
- Command Query Responsibility Segregation (CQRS)
- Event sourcing pattern
- Saga pattern
- Transactional Outbox Pattern
- Materialized View Pattern
- API composition pattern
- Database-per-service pattern
- Event Driven microservices
Course Description
Unlock the power of modern, event-driven microservices architecture with Spring Boot and the Axon Framework in this hands-on, project-based course. Dive deep into advanced patterns like CQRS (Command Query Responsibility Segregation), Saga, Event Sourcing, and essential microservices design principles to build robust, scalable applications.
This course is designed for developers and architects eager to gain expertise in building complex, distributed systems using event-driven patterns. From designing domain-driven services to managing data consistency across services, you’ll learn to address real-world challenges while creating resilient and high-performance microservices.
What You’ll Learn:
Event-Driven Architecture Fundamentals: Master the foundations of event-driven design and understand when to use it in microservices.
Implementing CQRS: Understand the Command Query Responsibility Segregation (CQRS) pattern, separating read and write concerns for optimized performance and scalability.
Handling Complex Business Transactions with Sagas: Learn to coordinate distributed transactions across multiple microservices using the Saga pattern, ensuring consistency without traditional locking mechanisms.
Event Sourcing: Capture every state change in an event log for an immutable record of historical data and easier debugging, replay, and auditability.
Database-per-Service Pattern: Maintain data independence for each microservice using separate databases, enabling easier scaling and independent deployment.
API Composition Pattern: Create aggregated, composite APIs at the gateway level to simplify client interactions with multiple services.
Materialized View Pattern: Use read-optimized views for efficient querying, ensuring responsive and scalable data access in CQRS-based applications.
Transactional Outbox Pattern: Ensure data consistency by safely publishing events from within your transaction boundary, eliminating potential data synchronization issues.
Key Technologies Covered:
Spring Boot: Build and deploy microservices with the popular Spring Boot framework.
Axon Framework: Leverage the Axon Framework’s powerful toolkit to implement CQRS and event-sourcing patterns.
Message Brokers: Integrate with message brokers for reliable event publishing.
Microservices Best Practices: Use design principles, patterns, and tools to enhance resilience, performance, and scalability.
Hands-On Learning:
This course is packed with real-world examples, hands-on exercises, and guided projects to solidify your skills. You’ll walk away ready to apply these advanced patterns in real projects, design robust microservices, and tackle common challenges in event-driven architectures with confidence.
Who Should Enroll:
Software developers and architects interested in advanced microservices design.
Engineers seeking hands-on experience with CQRS, Saga, Event Sourcing, and other cutting-edge patterns.
Developers looking to learn Spring Boot and the Axon Framework to build event-driven systems.
By the end of this course, you’ll be fully equipped to design and develop sophisticated, event-driven microservices that handle complex data consistency challenges with ease, providing a solid foundation for any high-scale, high-resilience distributed application.
Instructor Details
- 4.8 Rating
657 Reviews
Madan Reddy
Madan Reddy is the founder of eazybytes, who boasts over 15 years of experience creating and distributing enterprise web applications using Java, Spring, SpringBoot, Microservices, React, Angular, Cloud & Generative AI. He is consistently enthusiastic about staying current and imparting his knowledge with others. With his remarkable talent for simplifying complex concepts, he has been able to instruct novice software developers for many years, and has recently extended his knowledge to Udemy, where he has created top-rated courses. Through his teachings on Udemy, he intends to impart the knowledge he has acquired to other software engineers and college students.
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Reviews
By Anonymized User on 5/31/2026
Overall course content, explanation is really excellent. It gave a great insight on CQRS and other patterns. I would like to see more and going to recommend this course with my contact. Thanks again.
By Anonymized User on 11/24/2025
This course was good to understand about event driver architectures. The content and teaching was engaging. I would request you to add one more slide on the different ways of implementing event driven approach like using kafka, spring cloud streams, etc. I have understood the essentials and will recommend others to take this course.
By Santosh Kumar Patro on 10/3/2025
Excellent course! The instructor explains Event-Driven Microservices, CQRS, Saga, and Event Sourcing in a very clear and practical way. The examples are hands-on, well-structured, and easy to follow. Great balance of theory and real-world scenarios—highly recommended for anyone wanting to master microservices patterns!
By Roberto Perez Pelayo on 9/14/2025
This course will teach you about event-driven, CQRS and the SAGA pattern for micro-services. It is an intensive course and it is better to have taken the previous micro-services course from Madan Reddy. With both courses under your belt you'll be ready to tackle any challenge when developing micro-services. A big thanks to Madan for such quality courses.
By Krishna Verma on 8/29/2025
Madan is one of the best instructors I've encountered on Udemy. His courses deliver a level of industry-grade knowledge that's incredibly rare to find. This course is an amazing complement to the microservices course and truly a valuable learning experience.
By Praveen Deshmukh on 7/24/2025
Very nicely explained, but its more dependant on Axon framework, whether in real world we use custom implementation. If possible there should have some slides to explain how we can we achive in custom way or other competitive options.
By Ganesh Patil on 7/24/2025
Thank You! You provided one of the best knowledgeable resources. After going through course, I felt there is so much still pending to learn & practice. My sincere thank you once again! "Ye Dil Maange more!!". I request you to provide us some more complex design pattern & anti- design pattern tutorial also.
By Ashokkumar on 3/22/2025
I took three courses , Spring boot microservices , Microservices design pattern and Spring security Which I have understood well . Tutor (Madan) is having significant knowledge and he is explaining concepts very clearly . Thanks Madan for your effort and support .
By Anonymized User on 1/10/2025
The explanation of the topics is truly remarkable, presenting the content in a clear, engaging, and highly effective manner. The depth of understanding conveyed, paired with seamless organization, makes grasping even complex concepts effortless. It’s an impressive approach that enhances learning and leaves a lasting impression on the reader.
By Tushar Watts on 12/26/2024
Overall, the course achieves the objective. However, I feel taking care of these points: 1. Course shall be expanded to cover not just CQRS, Event Sourcing but all Microservices design patterns. 2. Although, its not feasible to cover every single framework available but there could be some time spent on providing info on other frameworks apart from axion and comparative analysis.
Quality Score
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Overall Score : 96 / 100






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