Overview for 'frankdejonge'

Encapsulating interactions with the outside world in your domain model.

Written by Frank de Jonge / Original link on Aug. 1, 2022

In my ever-lasting battle against anemic domain models I've developed a preference on how to integrate with the external concerns. I've seen many developers struggle to decide where and how implement these integrations. Often, this left applications dominated by ORM models, mutated externally, only…

Use a message envelope

Written by Frank de Jonge / Original link on Mar. 7, 2022

Event-driven architectures have various styles of communication. In my previous post I described a couple of event types you may see in these kinds of architectures. In this post I'd like to go over a supporting practice that benefits virtually all types of events; the use of message envelopes. I'l…

The different types of events in event-driven systems

Written by Frank de Jonge / Original link on Feb. 19, 2022

Event-driven systems come in all sorts of shapes and sizes. The obvious commonality is; they all use events to communicate information. These events come in many shapes and sizes, and determining what goes into an event has an immense impact on the design of your system.In this post I'd like to go…

Reliable event dispatching using a transactional outbox

Written by Frank de Jonge / Original link on Jan. 20, 2022

Using events in a system is great, but how do you know for sure if you've reliably dispatched your events? The transportation of events needs to be done reliably while maintaining overall system consistency, be it eventual or immediately. In a typical setup, a database is used to store information…