In the previous article we’ve seen some examples of long running processes. The purpose of this blog post is to show how to model long running processes by using choreography or orchestration.
Requirement
To better understand the differences between these two approaches, let’s take a long running process and implement it with both. Since we already talked about the Order Fulfillment enterprise process in the last post, let’s use that.
When a customer places an order, we need to approve it, charge the customer’s credit card, pack the order and ship it.
Choreography
Let’s first implement this requirement with choreography. Choreography is all about distributed decision making. When something important happens in a service (or bounded context), the service will publish an event. Other services can subscribe to that event and make decisions based on it.
