springboot - CybAI news

28 Oct

Deploying a Spring Boot Banking Application with Docker

stp2y0 CommentsNewscoding, community, container, development, docker, engineering, inclusive, software, springboot, vagrant

Containerizing applications is becoming increasingly important. In this guide, I'll walk you through deploying a Spring Boot banking application using Docker, first manually and then with Docker Compose. We'll cover everything from setting up the environment to running the application in containers. Prerequisites Before we begin, make sure you have: An AWS Account An Ubuntu EC2 instance (t2.medium) Docker installed Docker Compose installed Basic understanding of Spring Boot and MySQL (I already used vagrant box my local environment) Project Overview Our banking application is built with: Spring Boot (Java) MySQL Database Maven for build management Docker for containerization Setup My…

11 Sep

Spring Boot: A Revolução no Desenvolvimento de Aplicações Java

stp2y0 CommentsNewscoding, community, development, engineering, inclusive, java, software, springboot, webdev

Se você desenvolve em Java, já deve ter ouvido falar de Spring Boot. Mas se ainda não conhece, prepare-se para descobrir uma das ferramentas mais poderosas e práticas que revolucionou o jeito de criar aplicações Java! O que é o Spring Boot? O Spring Boot é um framework que facilita (e muito!) o desenvolvimento de aplicativos Java. Ele tira de você aquela dor de cabeça de configurar tudo manualmente, como banco de dados, segurança, APIs, entre outras coisas. Com ele, você pode criar rapidamente uma aplicação pronta para rodar, com pouquíssimas linhas de código e quase nenhuma configuração. Por que…

01 Sep

Enhance Your Spring Boot Skills by Solving Exception Handling Issues: Implement a Global Handler for UserNotFoundException

stp2y0 CommentsNewscoding, community, contributorswanted, development, engineering, github, inclusive, java, software, springboot

Overview This implementation enhances the exception handling mechanism within the Journal REST API application by defining a custom exception, UserNotFoundException, and implementing a global exception handler to manage this exception effectively. The goal is to centralize exception handling, improving code maintainability and consistency. Got to Issue Tasks 1. Define UserNotFoundException Create a custom exception class named UserNotFoundException. 2. Implement Global Exception Handler Implement a global exception handler to manage the UserNotFoundException. 3. Refactor Existing Code Refactor the existing controller code to remove local handling of UserNotFoundException. How to Contribute Fork the repository: Journal-Rest-API Clone the repository: git clone https://github.com/yourusername/Journal-Rest-API.git cd…

17 Jul

Ultimate Spring Boot Interview Preparation Guide

stp2y0 CommentsNewsbackenddevelopment, coding, community, development, engineering, inclusive, java, software, spring, springboot

1. Why Spring Boot? Spring based applications have a lot of configuration. When we use Spring MVC, we need to configure ComponentScan, DispatcherServlet, a view resolver, web jars, and more. Spring Boot is a project that is built on the top of the Spring framework. It provides a simpler and faster way to set up, configure, and run both simple and web-based applications. World is moving towards microservices and cloud-native applications. Spring Boot is the best choice for building microservices. **** ### 2. What are Spring Boot goals? Quick start to Spring. Provide opinionated 'starter' dependencies to simplify build configuration.…

15 Jul

Implementing CQRS and Event Sourcing in Distributed Systems

stp2y0 CommentsNewscoding, community, cqrs, development, engineering, inclusive, java, software, springboot, webdev

Introduction As software systems grow in complexity, the need for scalable and maintainable architectures becomes paramount. Two powerful patterns that address these needs are Command Query Responsibility Segregation (CQRS) and Event Sourcing. By leveraging these patterns, along with reactive principles, you can build systems that are highly responsive, resilient, and flexible. In this article, we will explore the concepts of CQRS and Event Sourcing, and provide detailed examples of how to implement them in a distributed system using Java and Spring Boot. Understanding CQRS What is CQRS? CQRS stands for Command Query Responsibility Segregation. It is a design pattern that…

04 Jul

Introduction to Pact Flow

stp2y0 CommentsNewscoding, community, contracttesting, development, engineering, inclusive, kotlin, pactflow, software, springboot

Introduction to Contract Testing Definition and importance of contract testing: Imagine that you and your friends are planning a party and each one has a task: one will bring the snacks, another the sweets, and another the drinks. To ensure that everything goes well, you make a list of what everyone should bring. "Contract testing" is like this list, but for computer programs that need to talk to each other. It checks that each part of the program is doing exactly what it promised, just like you check that each friend brought what they agreed to for the party. This…

21 Jun

Understanding @Primary in Spring

stp2y0 CommentsNewscoding, community, development, engineering, inclusive, java, programming, software, spring, springboot

If you read my post about the @Qualifier annotation, you have noticed that defining two beans of the same type can be a challenge. By distinguishing it with a qualifier name, @Qualifier helps Spring determine which bean to inject. The @Primary annotation will help Spring decide which of those same types of beans it should pick primarily. For the bean annotated with the @Primary annotation, the @Qualifier will not be necessary. It is only required for the other bean. Example 1: Using @primary and @Qualifier in Spring Let’s see the example in practice: public interface GreetingService { String greet(); }…

12 Jun

3 Ways to Use the @Lazy Annotation in Spring

stp2y0 CommentsNewscoding, community, development, engineering, inclusive, java, programming, software, spring, springboot

Does your Spring application take too long to start? Maybe this annotation could help you. This annotation indicates to Spring that a bean needs to be lazily initiated. Spring will not create this bean at the start of the application. Instead, it will create it only when the bean is requested for the first time. This allows Spring start-up to be faster. However, the first interaction with the bean can be slow because of the time required to create and inject the bean at runtime. You can use this annotation directly in the bean class (beans annotated with @Component and…