A scaled microservice-based application with a huge amount of growing data has a challenge to effectively deliver aggregated data like top lists. In this article, I show you how to use Redis to cache the aggregated data. …

Run multiple DBMS and C# Containers Behind an HAProxy Load Balancer with Docker Compose. Test Scaling with Different Number of Instances — In the previous article, you created a microservice architecture and manually implemented application-layer database sharding. Now, you will scale the application and run multiple container instances of the microservice and databases. You will use Docker Compose and an HAProxy load balancer:

Load Balance a C# ASP.NET Core Service and Use MySql App-Layer Sharding. Shows the Concepts, Which Also Apply to MongoDB, etc. — One of the big advantages of microservices is, that they can be scaled independently. This article shows the benefits and challenges of scaling one microservice and its database. You will create a working example application and manually implement application-layer sharding. It shows how to choose a shard key based on…

How to Build a Resilient Architecture with RabbitMQ, C#, Entity Framework, and the Transactional Outbox Pattern — In the first step, you will create two microservices. Each microservice has its own database. They use events to publish changes to a RabbitMQ event bus. (You can skip this part if you already implemented it in my last article). Next, you will see how messages get lost e.g. when…

Use RabbitMQ, C#, REST-API and Entity Framework for asynchronous decoupled communication and eventually consistency with integration events and publish-subscribe — In this guide, you will create two C# ASP.NET Core Microservices. Both microservices have their own bounded context and domain model. Each microservice has its own database and REST API. One microservice publishes integration events, that the other microservice consumes.

How to add a MySQL DB and a MongoDB replica set in K8S on Docker desktop using persistent volumes and access the databases from ASP.NET Core, C# and Angular — In this guide, you will use databases in a raw microservice-based cloud architecture. It starts with a single MySQL instance and continues to a MongoDB replica set with a headless Kubernetes service. Both databases use persistent volumes. The databases are accessed by ASP.NET Core backend services and use Angular as…

How to use K8S on Docker Desktop with Ingress to Develop Locally for the Cloud Using an ASP.NET Core C# REST API and Angular. — Kubernetes runs in a local environment with docker desktop. It is similar to a cloud environment. You can use it for developing and testing. There are no extra costs. You can always easily deploy it later to the cloud. In this guide, you will create a raw microservice-based cloud architecture…

This guide shows you how to use NSwag to automatically add an OpenAPI specification to an ASP.NET Core C# REST-API. It also serves the Swagger UI to the browser. You will use NSwag Studio to generate a TypeScript client. Then you add the strongly typed client to your Angular app…

This guide shows you all the steps to build an Angular SPA with a focus on authentication. The single-page web application uses Sign-In with google and angularx-social-login. The .NET Core authentication backend creates asymmetrically signed tokens to access another REST-API. …