March 2025
Intermediate to advanced
202 pages
4h 45m
English
Content preview from Real-World Event SourcingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 7Evolving Event-Sourced Systems
In the previous chapter, you learned about the importance of event stores and how they relate to additional storage for things like projections and aggregates. With those strong fundamentals in place, you can start exploring how event-sourced systems change over time and how to plan and build for this as a feature, and not something to fear.
In a blissful alternate universe, we could deploy our applications once, and they would continue to run unmodified and self-sustaining until the end of time. The unfortunate truth is that the moment we deploy our code anywhere, it’s already legacy. Even if we never add a single feature, applications still need to change because of bug fixes, patches that deal with ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.