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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Reading Your Writes
In monolithic applications, it’s easy to take for granted that we can read the data we’ve written. When everything is in a single process, reading a projection created by the flow of events through aggregates is easy—just read the data.
But when applications are running at large scales, we can’t rely on the level of consistency offered by a monolith. Assume you’ve written your application as a monolith, and now you’re scaling the application out to multiple geographic regions. Your projection database is now replicated from a single replica leader (often unfortunately called the “master”). Your application writes to a local event stream which is then propagated to the cluster leader. Take a look at the following diagram ...
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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.
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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.