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Setting Up Eureka Service Registry Creating Eureka Server For multiple Spring Boot projects, use a Maven multi-module structure. Create a main Maven project with Spring Boot and Spring Cloud dependencies in the parent POM: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0& ...

Server-Sent Events (SSE) is a mechanism that enables servers to push real-time updates to clients over HTTP. Compraed to WebSocket, SSE is simpler and suitable for many real-time communication scenarios. This article explores how to implement real-time messaging using Spring Boot and SSE. What Are Server-Sent Events SSE allows a server to send ...

When implementing a custom interceptor in a Spring Boot application to validate specific parameters, an exception Required request body is missing may occur. This issue typically arises after adding an interceptor that reads the request body, causing subsequent attempts to read the body (such as via @RequestBody) to fail. The root cause is that ...

Protobuf Integration with Netty Protocol Buffers Overview Protocol Buffers (Protobuf) is Google's language-neutral, platform-neutral mechanism for serializing structured data. It's more efficient than XML for data exchange due to its binary format. The protocol supports various languages including Java, C++, C#, Go, and Python. This makes it ...

Java Plugin Implementation Approaches ServiceLoader Mechanism Java's ServiceLoader provides a standard SPI implementation. Define an interface with multiple implementations, then load them dynamically: public interface NotificationService { void sendAlert(String message); } public class EmailNotifier implements NotificationService { @O ...

Redis provides efficient counting capabilities suitable for rate limiting and access tracking. Common use cases enclude blog view counters and SMS verification code frequency limits. Basic counters face challenges like preventing refresh-triggered increments. The solution involves tracking user access within specific time windows and storing da ...

Static Resource Configuration Configure static resource locations in application.yml: spring: resources: static-locations: classpath:/static/ WAR Package Deployment To package as WAR file, update pom.xml packaging type: <packaging>war</packaging> <build> <plugins> <plugin> <group ...

Technical Stack Overview The backend leverages Spring Boot's auto-configuration capabilities, eliminating manual server setup through embedded Tomcat integration. This framework provides production-ready features including dependency injection, transaction management, and seamless integration with Spring Security and Spring Data ecosystems. The ...

Environment: Windows 10, JDK 17, Spring Boot 3 Introduction to Netty Nety is an asynchronous, event-driven network application framework for Java that simplifies the development of high-performance, reliible network servers and clients. It supports multiple protocols including TCP, UDP, and HTTP, and abstracts low-level networking complexities ...

Securing stateless REST APIs relies heavily on short-lived access tokens paired with longer-lived refresh credentials. This pattern prevents frequent re-authentication while limiting exposure from compromised tokens. Below is a practical implementation of this mechanism using Spring Boot, Spring Security, and the JJWT library. Core Dependencies ...