api Archives - Igor Venturelli

What is Spring Boot? A Complete Guide to Simplifying Java Development

Discover how Spring Boot simplifies Java development with embedded servers, starter dependencies, and microservices-ready features

In today’s fast-paced software development world, creating scalable and production-ready applications quickly is essential. Spring Boot, a powerful extension of the Spring framework, allows developers to do just that. But what exactly is Spring Boot, and why has it become the go-to framework for Java developers worldwide?

Spring Boot and GraphQL: Creating a GraphQL API

Say goodbye to REST’s limitations and control your data with GraphQL

GraphQL has rapidly gained popularity as an alternative to REST APIs for its ability to provide more flexible and efficient data queries. In contrast to REST’s fixed endpoints, GraphQL allows clients to specify the exact data they need, reducing over-fetching or under-fetching of information. In this post, we’ll dive into how to set up a GraphQL API using Spring Boot, giving you all the necessary code snippets to get started quickly.

Implementing OAuth2 for Microservices Authentication

Learn to secure microservices with OAuth2

In today’s cloud-native landscape, microservices architecture has become a popular approach for building scalable and resilient applications. However, managing authentication and authorization across these distributed services can pose significant challenges. Enter OAuth2, a widely-adopted open standard for authorization that enables secure access to resources across different services.

Introduction to Spring Boot: Building Your First RESTful API

Learn how to build your first RESTful API using Spring Boot

Building a RESTful API is a fundamental skill for any backend engineer. Spring Boot simplifies the process with its robust framework, allowing you to quickly develop scalable and maintainable APIs. In this guide, we’ll walk through creating your first RESTful API using Spring Boot. We’ll cover REST fundamentals, explain the Controller → Service → Repository pattern, mock the Repository layer, and discuss the role of Spring Security (while leaving the deeper details to specialized blog posts). By the end, you’ll have a functioning API and a deeper understanding of Spring Boot’s architecture.

Handling Exceptions in Your Spring Boot REST API

Creating a robust and user-friendly REST API with Spring Boot requires careful handling of exceptions. When errors occur, your API should return meaningful HTTP status codes instead of a generic HTTP 500 Internal Server Error. This approach enhances the clarity and usability of your API. Let’s delve into how you can achieve this in a structured and effective manner.

Securing REST APIs with OAuth2 and JWT: A Comprehensive Guide

In today’s interconnected world, REST APIs are a critical component of modern web applications. However, securing these APIs is essential to protect sensitive data and ensure that only authorized users can access resources. One of the most effective ways to secure RESTful APIs is by using OAuth2 and JSON Web Tokens (JWT). In this guide, we will explore how to implement these security measures, focusing specifically on the authorization_code grant type and using a third-party service like Auth0 as the authorization server.

Understanding the Differences Between @Controller and @RestController Annotations

In the world of Spring Framework, particularly in Spring MVC, @Controller and @RestController are two annotations that play crucial roles in defining endpoints and handling HTTP requests. While both are used for building web applications, they serve slightly different purposes and have distinctive behaviors. Let’s delve into the nuances of each annotation to better comprehend their functionalities and use cases.