Azure Active Directory (AD) B2C is a useful user identity provider to support user registration, authentication and authorization flow for your applications. For your web apps, the user registration page can be rendered by Azure AD B2C and the page visitors can register themselves there into your apps. However, sometimes…

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications. It is the most popular container platform and de facto the industry standard. Kubernetes is normally running on a server cluster, which is almost not possible for the beginners and the idea…

Nest (NestJS) is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with and fully supports TypeScript. Under the hood, Nest makes use of robust HTTP Server frameworks like Express (the default). Amazon Cognito User Pools, as a fully managed service, provides a secure…

The AWS Lambda function is really so cool that frees the companies from the important but boring platform administrative work, so that they can investigate their IT resources, first of all the invaluable developers, to the more important business, the value-creation software development. Motivation For a company with certain seriousness the…

The micro-service architecture is the state-of-art in the current software development decade. Coding an application, building via a pipeline, packing into a docker and deploying on a docker platform are daily work for the developers and the DevOps-colleagues. They are enjoying the development and deployment independence very much. …

During using Zuul of Spring Cloud (Finchley.SR2) proxy as my API Gateway and Eureka as the registration server, there are some interesting configuration tricks, which may be very practical for you. In following examples, I set the Spring Boot project of Zuul starting at http://127.0.0.1:8080 Service Routing A normal static route in…

In the past time of monolith the development teams were forced to share some basis libraries to make their packages refer to same classes, class members and methods, so that they could be compiled together into one big deployment artifact. The time changes. More and more software teams are practicing…

Since the front end and back end developers can be normally working in different teams, the documentation of the API provided by the back end becomes more and more important for communication and integration. For the back ends which are built by Spring Boot, the Swagger which is implemented by…

Keycloak is a standalone authentication and authorization system based on Java and JBoss. Its powerful, comprehensive and amazing features can be found on its home page https://www.keycloak.org. …