Skip to main content

CQRS with decoupled messaging series

Rishabh S Ajmera wrote a blog series about implementing a CQRS architecture with emphasis on decoupling messaging. Definitely worth checking out!

A quick overview:

  1. Introduction
    • Current article explaining the principles being followed.
  2. Need for Enterprise Servicebus Frameworks and Decoupled messaging with their samples
    • We will look at samples from MassTransit and nServicebus documentation and will decouple publish subscribe from those samples.
  3. Inventory Manager - CQRS application (with decoupled messaging) - Commands
    • Inventory Manager application will be introduced. It is implementation of Greg Young's Simple CQRS Example, however making it usable for real world. Currently Inventory Manager application implements only first usecase of creating an inventory item.
    • The post will focus on sending command following CQRS architecture in Inventory Manager application.
  4. Inventory Manager - CQRS application (with decoupled messaging) - Aggregate and Event Sourcing
    • Explaining the workings of Aggregate and Event Sourcing in Inventory Manager application
    • Focuses on how to ensure publishing of events upon saving of aggregate (without Distributed Transaction)
  5. Inventory Manager - CQRS application (with decoupled messaging) - ReadSide
    • Thin Read layer in Inventory Manager and points of interest about implementing it

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...