Base Classes for Spring Security Implementation


To enable HTTP Security in Spring, we need to extend the WebSecurityConfigurerAdapter. The “@EnableWebSecurity” annotation and “WebSecurityConfigurerAdapter” work together to provide web based security.

public class ApiSecurityConfig extends WebSecurityConfigurerAdapter {


By default, the BasicAuthenticationEntryPoint provisioned by Spring Security returns a…

Notes on Servlet, Servlet Container, Filter, Interceptor, HandlerInterceptor

What is a Servlet?

It is a Java class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model.

Java Servlet technology defines HTTP-specific servlet classes. The javax.servlet and javax.servlet.http packages provide interfaces and classes for…

How to Connect to Multiple and Different Database Sources in Your Spring Boot Project

I had described how to connect to different Cassandra database keyspaces in my previous post:

My project was implemented with Spring Boot 2.3.5 RELEASE.


These were my other dependencies used for…

Short Notes about Messaging Protocols, Apache Kafka and RabbitMQ.

Before choosing a messaging queue, there are some concepts, based on your requirements, that should be taken into consideration. Some of them are:

  • Broker Scale: The number of messages sent per second in the system.
  • Consumer Capability: Whether the broker is…

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