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Database-Based Authentication in Spring Security: A Step-by-Step Tutorial

Published date 6 August 2023 Categories Blog / Java / Spring Boot

In this tutorial, we will explore how to implement database-based authentication using Spring Security. We’ll create a simple web application with user registration, login, and access control. Table of Content: Setting Up the Project Let’s start by setting up a new Spring Boot project. You can do this manually or use Spring Boot Initializr to generate the project structure. Ensure...

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How to Audit JPA Entities Using Envers in a Spring Boot Application

Published date 6 August 2023 Categories Blog / Java / Spring Boot

In this tutorial, we will walk through the process of setting up auditing for JPA entities using Envers in a Spring Boot application. We will create an example Spring Boot project, define JPA entities, configure Hibernate Envers, and demonstrate how to retrieve audit information from the database. In modern applications, tracking data changes is crucial, especially in critical systems handling...

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Joining Unrelated Entities with JPA and Hibernate in Spring Boot

Published date 6 August 2023 Categories Blog / Java / Spring Boot

In this tutorial, we will explore how to join unrelated entities using JPA (Java Persistence API) and Hibernate in a Spring Boot application. The process of joining unrelated entities allows us to retrieve data from different tables that have no direct association using a single database query. By the end of this tutorial, you will have a better understanding of...

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Implementing the Strategy Pattern using Lambda Expressions in Java 8

Published date 5 August 2023 Categories Blog / Java

In this tutorial, we will explore how to implement the Strategy Pattern in Java 8 using lambda expressions, which will significantly simplify our code and make it more concise. Table of Content: Understanding Strategy Pattern The Strategy Pattern is a behavioral design pattern that focuses on encapsulating a family of algorithms, making them interchangeable, and allowing clients to select the...

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Understanding the Difference Between Float and Double in Java

Published date 4 August 2023 Categories Blog / Java

In Java, when dealing with numeric values that require decimal points, developers have two primary data types at their disposal: float and double. While both are used to represent floating-point numbers, they differ in precision and size. Understanding the distinctions between these data types is crucial to writing efficient and accurate Java programs. In this blog post, we’ll dive into...

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Mastering Spring Batch AggregateItemReader with Example

Published date 27 July 2023 Categories Blog / Spring Boot

Spring Batch is a powerful framework for batch processing in Java-based applications. It provides various components that enable the development of robust and efficient batch jobs. One of the key components of Spring Batch is the AggregateItemReader, which allows you to read items from multiple sources and aggregate them into a single stream. In this tutorial, we will walk through...

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Mastering Real-time Data Processing with KafkaItemReader and KafkaItemWriter in Spring Batch

Published date 27 July 2023 Categories Blog / Spring Boot

In this tutorial, we will explore the powerful KafkaItemReader and KafkaItemWriter components in Spring Batch. These components facilitate seamless integration with Apache Kafka, enabling efficient and scalable data processing in batch jobs. We will explain the concepts behind KafkaItemReader and KafkaItemWriter and delve into their various use cases. Table of Content: Understanding KafkaItemReader KafkaItemReader is a Spring Batch item reader...

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Building Event Sourcing with Spring Boot and MongoDB

Published date 23 July 2023 Categories Blog / Spring Boot

In this tutorial, we will explore how to implement Event Sourcing using Spring Boot and MongoDB. Event Sourcing is a powerful architectural pattern that can be used to ensure data consistency, auditability, and scalability in complex systems. It enables you to store the state of an application as a series of events, capturing every change made to the data over...

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Introduction to CQRS Pattern in Spring Boot and MongoDB

Published date 23 July 2023 Categories Blog / Spring Boot

Command Query Responsibility Segregation (CQRS) is a design pattern that aims to improve the performance, scalability, and maintainability of applications by segregating read and write operations into separate models. This pattern has gained popularity in recent years, especially in distributed systems and microservices architectures. In this article, we will explore how to implement the CQRS pattern in Spring Boot application...

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Understanding UUID in Java: A Universally Unique Identifier

Published date 12 July 2023 Categories Blog / Java

In Java, a universally unique identifier (UUID) is a commonly used data type for generating and representing unique identifiers. UUIDs are particularly useful in distributed systems, as they provide a reliable means of identifying resources without relying on centralized coordination or database systems. In this article, we will delve into the concept of UUIDs in Java, their structure, generation methods,...

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