🧠 Introduction When building modern distributed systems, choosing the right messaging system is critical. Two of the most widely used tools—Apache Kafka and RabbitMQ—serve similar
Category: Interview Questions
REST vs gRPC: Choosing the Right Protocol
In today’s distributed systems and microservices architecture, choosing the right communication protocol is critical. Two of the most popular approaches are REST and gRPC. While
HashMap vs LinkedHashMap in Java: Key Differences, Performance & Use Cases
Java developers often use HashMap for key-value storage, but LinkedHashMap offers specific advantages when order matters. Both implement the Map
Spring DI: Constructor vs @Autowired Injection Explained
In the Spring Framework, dependency injection (DI) can be done in multiple ways. The two most common approaches are Constructor Injection and @Autowired (Field/Setter Injection).
How SOLID Principles Improve Software Design
Introduction Writing clean, maintainable, and scalable code is one of the biggest challenges in software engineering. As applications grow, poorly designed code becomes difficult to
Retrieval-Augmented Generation (RAG): A Complete Guide for Enterprise AI (2025)
Retrieval-Augmented Generation (RAG) is rapidly becoming the backbone of modern, enterprise-grade AI systems. It enables Large Language Models (LLMs) to deliver accurate, up-to-date, and trustworthy
Monolithic vs Modular Monolithic Architecture: Key Differences Explained
When designing software, choosing the right architecture is crucial. Monolithic Architecture and Modular Monolithic Architecture are often confused; both deploy as single applications but differ significantly. Monolithic architecture is a single, tightly coupled unit, making early development simple but harder to maintain and scale as complexity grows. In contrast, Modular Monolithic Architecture features well-defined modules, facilitating refactoring and easier maintenance while still deploying as one application. It is increasingly favored for growing projects because it allows for scalability without the complexities of microservices. Choosing between them depends on application size and long-term growth plans.
Java 25: The Future of Concurrency with Virtual Threads
For years, Java developers have been told the same story: “Concurrency is hard — but powerful.” We accepted it. We learned thread pools, executors, synchronization,