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What is Event Sourcing and CQRS? (EDA - part 3)

As part of the Event Driven Architecture Series, in this video I explain Event Sourcing and CQRS. What is Event Sourcing? What is CQRS (or Command Query Segregation Pattern)? How do they relate? And what do they have to do with Event Driven Architecture and Microservices? In this video I try to cover all these questions in about 8 minutes using examples. Event Sourcing promotes to store data using Events, via an Event Log. This provides several features, allowing for greater scalability in the services but with some drawbacks like Eventual Consistency. CQRS combines really good with Event Sourcing to also offer more flexibility when scaling distributed services, but might be way more complex than typical/straightforward CRUD operations. #EventSourcing #CQRS #Microservices #EventDriven ----------------------- 📘 Recommended books (incentivized): Microservices Patterns: https://amzn.to/337AqjE Building Microservices: https://amzn.to/3h8i0HV 🔖 Relevant resources: The many meanings of Event Driven Architecture:    • The Many Meanings of Event-Driven Arc...   Event Sourcing: https://martinfowler.com/eaaDev/Event... What they don't tell you about Event Sourcing:   / what-they-dont-tell-you-about-event-sourcing   Pros and Cons: https://softobiz.com/microservice-orc... When to use CQRS: https://community.risingstack.com/whe... ----------------------- 🤓 If you are preparing for a technical interview, don't miss my playlist: https://devstory.page.link/technical-... 📚 I have also prepared FREE study guides available here (no subscription needed): https://devstory.page.link/study-guides ----------------------- Remember you can reach me here: #️⃣ Twitter:   / cv13lm4   -⌨️ Github: https://github.com/cvielma ----------------------- In A Dev' Story I explain Software Development related topics from my point of view. I'll be explaining different topics in "Chapters" according to the stage of the story I think they belong. Hope is as entertaining for you as it's fun for me to create these videos Thanks again for watching! Feel free to like, comment, share and subscribe, it means a lot to me and helps the channel grow.