Identities are the defining characteristic of an entity in Domain-Driven Design. And as soon as the Id is public and leaves its immediate context, other components might use it. For example if service A references by Id an entity from service B, changing the Id of the entity will have a knock-on effect of service A. This is why its important to have several tools in the toolbox. In this blog post we’ll discuss 7 strategies for assigning Ids and their trade-offs.
Continue ReadingMonth: June 2019
Defining a Test Strategy for Continuous Delivery
Testing is an important part of building a product right. Continuous Delivery makes that more explicit by building quality in. In this blog post we’ll see how you can start off testing on the wrong foot. Then we’ll see how asking basic questions like Why, What, How and Where can help you define a sound test strategy in a Continuous Delivery context.
The Deployment Pipeline
Most of the teams nowadays think about Continuous Delivery. Continuous Delivery means automating the release process, from code merge to production release. How do you do that? By using the deployment pipeline pattern. The deployment pipeline models and automates the release process. Here is an example:
Defining Test Boundaries – An example
I think that everybody agrees that testing is required in order to build a quality product. But there’s also a lot of confusion about the boundaries of each test type. What’s the scope of a unit test? What’s the difference between an integration test, an integrated test and a contract test? If you ask 3 developers about test boundaries, you’ll most likely get 3 different answers. For example, I still talk to people who consider that a unit test should test a single class/method.
What’s clear is that most teams don’t have a consensus on what’s the scope of the different types of automated tests and the differences between them. Getting to a universal consensus might be hard, but getting to a consensus inside the team should be easy enough. In this blog post we’ll see an example of how to do that.
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