In this tutorial, I will show you how to install Apache Kafka on macOS! First, go to Apache Kafka’s Download page at https://kafka.apache.org/downloads to download its latest version! After the download is complete, please unzip this download file: Apache Kafka depends on Apache ZooKeeper for cluster… Read More
I introduced you to Flyway to implement database migration. For Spring Boot applications that want to use Flyway, this integration is easy because Spring Boot already supports it. How is it in detail? Let’s find out together in this tutorial! First, I will create a… Read More
In the previous tutorial, I showed you how to implement an Authorization Server using Spring Authorization Server, but the information about RegisteredClient in this tutorial is stored in memory. To store RegisteredClient information in the database, how will we do it? In this tutorial, I… Read More
Jackson library makes it possible for us to convert data in JSON form to different data formats and vice versa. In this tutorial, I will show you how to convert data from JSON to CSV! First, I will create a new Maven project: with Jackson… Read More
The JSON Web Key Set is a collection of JSON Web Key public keys provided by the Authorization Server so that the Resource Server can verify the access token sent by the Client Application. In the tutorial about implementing OAuth Authorization Server using Spring Authorization Server,… Read More
PKCS12 is one of the standard formats of SSL certificates with high-security capabilities. Java’s keytool tool in addition to helping us to generate JKS keystore for Java, also supports us to generate this PKCS12 certificate. Specifically, you can use the following command to generate PKCS12… Read More
To revoke a valid access token, stop the Client Application from using that access token, we will use the token revocation endpoint. With the Authorization Server built using Spring Authorization Server, you can use the following POST request to revoke an access token: http://localhost:8080/oauth2/revoke. For… Read More
Redisson is a Java client library for Redis. Using it, you can manipulate, add, delete, edit data, and much more with a Redis server. In this tutorial, I will guide you through the basic operations with Redis using Redisson! First, I will create a new… Read More
Resource Server in OAuth2 is used to protect access to resources, APIs. It will validate the access token passed by the Client Application, with the Authorization Server to decide if the Client Application has access to the resources and APIs it wants. In this tutorial,… Read More
In this tutorial, I will guide you to create a new Jakarta EE MVC application with Maven in Eclipse! First, in Eclipse, go to File, select New and then select Maven project: To create a Jakarta EE MVC project with Maven, the fastest way is… Read More
