The Adapter Pattern is a structural design pattern that allows incompatible interfaces to work together. It acts as a bridge between two incompatible interfaces by converting the interface of a class into another interface that a client expects. This pattern involves a single class called Adapter, which is responsible for joining functionalities of independent…
This tutorial assumes that you have a basic understanding of Java and Spring Boot. Step 1: Set Up a Spring Boot Project You can use Spring Initializr to generate a basic Spring Boot project. Visit https://start.spring.io/ and select the following options: Project: Maven Project Language: Java Spring Boot: Choose a version Packaging: Jar or…
Reactive programming is a paradigm that deals with asynchronous data streams and the propagation of change. In this tutorial, we'll focus on building a simple Spring WebFlux application with R2DBC for interacting with a MySQL database reactively. Prerequisites: JDK 11 or later installed. Maven or Gradle for project management. MySQL database server installed and…
GraphQL is a query language for APIs, and it's a powerful alternative to REST. Spring Boot, combined with the Spring GraphQL module, makes it easy to create GraphQL-based APIs. Prerequisites: Basic knowledge of Spring Boot and Java. JDK 8 or later installed on your machine. An Integrated Development Environment (IDE) such as IntelliJ IDEA…
Introduction In this tutorial, we will explore how to set up logging in a Spring Boot application using the Elastic Stack, which consists of Elasticsearch for storage, Logstash for processing, and Kibana for visualization. This powerful combination allows for centralized logging, making it easier to monitor and analyze logs from multiple microservices. Prerequisites Java…
1. Introduction Apache Kafka is a distributed event streaming platform that enables you to build real-time streaming applications. In this tutorial, we'll explore how to integrate Kafka with a Spring Boot application. 2. Prerequisites Before you begin, ensure you have the following installed: Java JDK (8 or higher) Apache Kafka (Download from https://kafka.apache.org/downloads) Apache…
This tutorial aims to guide you through the basics of using Mockito in a Spring Boot application. Mockito is a powerful mocking framework for Java, commonly used for testing purposes. We'll cover the fundamentals of setting up a Spring Boot project, creating a simple service, and using Mockito to write effective unit tests. Step…
In this tutorial, we'll walk through the process of creating a Spring Boot project using Gradle as the build tool. Whether you're starting a new project or adding Spring Boot to an existing Gradle project, this tutorial will guide you through the necessary steps to set up your development environment and get your project…
Introduction: Quartz Scheduler is a widely-used open-source library for scheduling and executing tasks in Java applications. It provides powerful features for job scheduling, cron-like expressions, and support for clustering. In this tutorial, we'll explore the basics of Quartz Scheduler and walk through practical examples to demonstrate its capabilities. Prerequisites: Before starting, ensure you have…
Introduction Spring Boot is a popular Java-based framework for building microservices and web applications. OpenFeign is a declarative web service client developed by Netflix for simplifying the process of making HTTP requests. In this tutorial, we'll explore how to integrate and use OpenFeign in a Spring Boot application. Prerequisites Before we start, make sure…