The common requirement in enterprise application is to store changes of an entity in separate table in structured way. There are multiple to achieve this This blog post explains the process to store entity/table/domain changes in separate table using EntityListener.…
Note: This is work in progress Spring Framework 6.1 M2 debuts the RestClient, a fresh synchronous HTTP client. As its name implies, the RestClient provides the smooth WebClient API while leveraging the foundation of RestTemplate. With this we have 3…
Spring Boot is a popular framework that provides an easy way to create web applications. It offers a lot of features that make development easier and faster. One of these features is the ability to schedule tasks using the @Scheduled…
This blog post explains the process to Unit test and Integration test Spring Boot application with JUnit and Spring Testing library Unit Tests Typical Spring Boot application divided into 3 layers Repository layer Testing Let’s start with Repository layer. See…
I read some good things about OpenJ9 in their website and decided to give it a try. In my tests I found out OpenJ9 JVM is using almost half of the memory of Hot Spot JVM. Setup My Spring Boot application deployed…
This blog post explains the process to configure the Docker service health checks using native docker service commands. Docker swarm is a container orchestration tool similar Kubernetes, OpenShift, ECS, EKS and it comes as part of Docker engine. Read more…
Kafka helps you to build fast, high throughput, fault tolerance, scalable microservices, and applications. Kafka Streams stores data in Kafka Clusters (Kafka State Stores) and gets data wicket fast. Technologies Used Overview This repository demonstrates CQRS Event Sourcing (Materialized views) with Kafka…
Overview Java multi-threading requests the Operating System to create and destroy threads. Using multiple threads to execute multiple tasks is an efficient way to use CPU and gives a real performance boost to the application. This blog post explains the…
Keycloak is one of the widely used Open Source Identity and Access Management application. This article demonstrates usage of Keycloak as authentication server with Angular, Spring Boot and Spring Security. As usual, code uploaded to Github repository Technologies: Prerequisites: Setup: 3. Go…
This blog post explains the JSON web token(JWT) authentication using Spring Security, Spring Boot, Spring Data and Angular. Source code uploaded to Github repository Introduction JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained…