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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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Understanding the Difference Between Cookies, Sessions, and Tokens in Spring Boot

Published date 29 July 2023 Categories Blog / Spring Boot

When developing web applications, managing user authentication and maintaining their state across multiple requests are critical tasks. Cookies, sessions and tokens are common mechanisms used for this purpose. In this tutorial, we will explore the differences between these three methods and see how to implement them using Spring Boot. 1. Cookies What are Cookies? Cookies are small pieces of data...

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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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AAA Pattern: Writing Effective API Tests

Published date 16 July 2023 Categories API Testing / Blog / Spring Boot

Tests are vital in software development, and a structured approach to test design is crucial for their effectiveness. The Arrange-Act-Assert (AAA) pattern is a popular technique that aids this goal. In this article, we delve into the AAA pattern, providing examples to showcase its application. Discover how the AAA pattern is employed to test controllers, services, and repositories within a...

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Comprehensive Interview Preparation Guide for Spring Boot Developers: Fresher, 3+ Years, and 5+ Years of Experience

Published date 12 July 2023 Categories Blog / Experience

Preparing for a Spring Boot developer interview requires a solid understanding of the framework’s core concepts, practical experience in developing applications, and knowledge of related technologies. Whether you’re a fresher, have 3+ years of experience, or 5+ years of experience, this comprehensive interview preparation guide will provide you with a roadmap to excel in a Spring Boot developer interview. Let’s...

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How Spring Boot Annotations Works?

Published date 9 July 2023 Categories Blog / Spring Boot

In this technical blog post, we’ll explore the most commonly used Spring Boot annotations, such as @SpringBootApplication, @EnableAutoConfiguration, @ComponentScan, @RestController, @Autowired, @Configuration, @Entity, and @Transactional. By diving into the internals of these annotations, you’ll gain a solid understanding of how they function and how they contribute to the development process. Whether you’re a beginner looking to get started with Spring...

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Building a Spring Reactive Web Application with Microservices for High Scalability and Resilience

Published date 8 July 2023 Categories Blog / Java / Microservice / Spring Boot

In today’s fast-paced world, building web applications that can handle high traffic, provide fault tolerance, and scale horizontally is crucial. Microservices architecture, combined with reactive programming, can help achieve these goals. In this blog post, we will explore how to build a Spring Reactive web app using the microservice pattern and implement features like high scalability, fault tolerance, resilience, and...

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