Core Java
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Service Mesh in Java: Istio and Linkerd Integration for Secure Microservices
As microservice architectures grow, managing service-to-service communication becomes complex. Concerns like traffic management, security (mTLS), observability, and retries cannot always…
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JUnit Testing with External Data Files
When writing unit tests, it’s often necessary to test your logic against structured input data. Instead of hardcoding input in…
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Modern Java Testing with JUnit 5 and Testcontainers
Realistic Integration Testing with Dockerized Databases Unit tests are great for checking isolated business logic. But when your application talks…
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JPA Entity Lifecycle Events: Audit and Validate Your Data Transparently
When working with Java Persistence API (JPA), managing entity state transitions can become complex—especially when you need to enforce validation…
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Building Pluggable Swing Modules with OSGi
Architecting Large Desktop Applications That Can Be Extended at Runtime Modern desktop applications often require flexibility, extensibility, and modularity, especially…
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Using UNION Logic in Hibernate Applications
Hibernate is a Java ORM tool that allows interaction with relational databases using entity objects. However, it lacks native support…
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ConcurrentHashMap vs. SynchronizedMap: Choosing the Right Tool for Concurrency
In Java, working with collections in a multi-threaded environment can lead to race conditions, data corruption, and unexpected behavior if…
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HashMap Security: Preventing Denial of Service via Hash Collision Attacks
HashMap is one of the most used data structures in Java — it’s fast, efficient, and ideal for key-value lookups.…
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Introduction to DiceDB
DiceDB is an open-source, easy-to-use in-memory database designed for modern applications. It supports fast data access and real-time updates, making…
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