Designing Systems and Crafting Code
In today’s text, I want to take a closer look at Server Sent Events (or SSE for short) and WebSockets. Both good and battle-tested approaches to data exchange. I will start with a short characteristic of both tools – what they are and what they offer. Then, I will compare them according to eight categories, … Read more
In this text, the final summary of my categories theory series, I will use my spotlight and take a closer look at the relations between all three previously described functional containers, namely: Functor, Monad, and Applicative. Below, you will find a comparison of them in terms of: Theory Laws Methods Possibilities & Use Cases Theory … Read more
Today, I would like to create a separate text with the same topic but for Spring Boot 3 and Keycloak.
I want to take a closer look at gRPC and REST. Probably two of the most commonly used approaches for creating API nowadays.
I will describe how you can secure your Spring Boot based REST API with the help of Keycloak.
I will describe and explain OpenID Connect Flows. The processes of authentication described in OpenID Connect specification.
In today’s text, I will describe and explain OAuth Grant Types — the processes of authorization. I will start with a quick recap of the most basic OAuth roles. Recap of OAuth Roles Although you probably know them already I want to make a quick recap for everyone reading this to be on the same … Read more
Applicative is just another concept similar in meaning and history to Functors and Monads. Besides explaining the theory behind it, I will implement a simple Applicative. I will also use Optional, to show what advantages Applicatives may give us. The source code for this article is available in GitHub repository. Why Should We Care About … Read more
Functor is a concept originating from mathematics, to be exact, from a part of mathematics called category theory. Here I will try to give you some more insight into Functors — what they are, how they work, and what the theory behind them is. I will also implement a simple Functor to better understand how they work … Read more
Have you ever wonder what allMatch on empty Stream will return ? Here you will get all information needed to understand why it works this way.