Week 46, year 2014

• CQS with Database-Generated Ids - Mark Seemann brings up a very interesting subject in his post: how to fit Command Query Separation principle in case you have to save a brand-new object in a database and also need the created id back? Sure, you can have GUIDs for identifiers (which have some drawbacks as I’ll show later on), but what if you really need integers? I’ve been asked the same question for several times, so in this post I’ll share the solution I use for this problem. [Enterprise Craftsmanship]
• Domain Events - Boundaries & Messages A system’s design is defined by it’s boundaries, and by the way it communicates with other systems. This outward facing design is, all things considered, more important than the internals. It is important whether we are talking about small systems (such as an object) or large systems. The communication between systems happens with messages. We can say that our system is bounded when it does not need to know anything about the internal structure of systems it communicates with, and those systems do no need to know anything about our system. When the boundaries are chosen well, we can achieve greater decoupling between systems. [Mathias Verraes]

Permalink | From 10 November 2014 to 16 November 2014 | Last updated on: Mon, 7 Jun 2021 09:18:52 GMT