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How To Set Up Multiple Datasources in Spring Boot 3

Separating data into different databases is a typical approach in the microservices world. This means that each backend usually needs to access only its limited database. At the same time, a backend a...

24.04.2025 0 Read More

How to Map a JSON Column in Spring Boot With JPA 3 and Hibernate 6

Building a RESTful application in Spring Boot that reads data from a database requires the definition of some ORM mappings. Even though this is generally a boring task, it is crucial for the proper fu...

24.04.2025 0 Read More

Master Java Exception Handling: 10 Proven Patterns for Robust Applications

As a best-selling author, I invite you to explore my books on Amazon. Don't forget to follow me on Medium and show your support. Thank you! Your support means the world! Java exception handling is s...

24.04.2025 0 Read More

Tuning OutOfMemoryError: Metaspace Size Problems

When it comes to tuning and troubleshooting memory issues in Java, many people think only of the Java heap. However, the metaspace is also an important consideration. Metaspace memory is managed separ...

24.04.2025 0 Read More

System Design Interview: Replacing Redis with Own Application in Spring Boot

It was a Wednesday afternoon when I stepped into the virtual meeting room for my senior Java backend developer interview. After the usual introductions and technical questions, the lead architect lean...

24.04.2025 0 Read More

Getting Started as a Java Developer: A Complete Guide

Java is one of the most enduring and widely used programming languages in the tech industry. Its platform independence, scalability, and robust ecosystem make it a go-to choice for companies ranging f...

24.04.2025 0 Read More

Dica Java: Quando preciso testar exceções? #007

Em testes unitários em Java, com JUnit, existem apenas 2 cenários que necessitam testar exceções: try-catch's explícitos disparo de exceções explícitas Por exemplo nos dois métodos com os...

24.04.2025 0 Read More

Analyzing OutOfMemoryError: GC Overhead Limit Exceeded

In this article, we’ll be taking a look at the Java runtime error: java.lang.outofmemoryerror: gc overhead limit exceeded. It’s a fairly common error, but it can be confusing, because the same pro...

24.04.2025 0 Read More

🚀 Unlocking the Power of Spring Batch Processing in Modern Java Applications

Batch processing remains a cornerstone for enterprise systems that handle large volumes of data—think ETL, data migration, reporting, and background jobs. As Java developers, we need robust, scalabl...

24.04.2025 0 Read More

Testing MongoDB Atlas Search Java Apps Using TestContainers

This article is written by Luke ThompsonThis will be an exploration of testing MongoDB Atlas Search solutions written in Java using TestContainers and JUnit5. We’ll start simple and build up to more...

24.04.2025 0 Read More

How To Set Up Multiple Datasources in Spring Boot 3

How to Map a JSON Column in Spring Boot With JPA 3 and Hibernate 6

Master Java Exception Handling: 10 Proven Patterns for Robust Applications

Tuning OutOfMemoryError: Metaspace Size Problems

System Design Interview: Replacing Redis with Own Application in Spring Boot

Getting Started as a Java Developer: A Complete Guide

Dica Java: Quando preciso testar exceções? #007

Analyzing OutOfMemoryError: GC Overhead Limit Exceeded

🚀 Unlocking the Power of Spring Batch Processing in Modern Java Applications

Testing MongoDB Atlas Search Java Apps Using TestContainers

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