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Derek Comartin

Greenfield Project? Start HERE!

If you’re starting a new greenfield project or rearchitecting an existing system, how much effort do you put into the overall architecture and design? What are the types of things you should be considering or thinking of? It’s also really applicable if you have an existing system that you might be trying to decompose or rewrite portions. I will discuss aspects critical to the foundational architecture and design, allowing you to evolve your system over time. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Large System… Read More »Greenfield Project? Start HERE!

“I NEED data from another service!”… Do you really?

How do you share data between services? This is one of the most common questions when you have a system composed of many different services, and each service owns a data set. For example, you may need data from another service for validation or to send data to another service as part of a workflow. I will explain a few situations where you could share data between services, but more importantly, when you shouldn’t. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Data Ownership A common… Read More »“I NEED data from another service!”… Do you really?

Don’t Fail Publishing Events!

Consistency is critical when working with an event-driven architecture. You must ensure that when you make state changes to your database, the relevant events you want to publish are published. You can’t fail publishing events. Events are first-class citizens, and when events drive workflows and business processes, they rely on this consistency between state changes and published events. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Atomicity Here’s an example of placing an order. At the very bottom of this method, we publish an OrderPlaced event… Read More »Don’t Fail Publishing Events!