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Introduction In the previous article, we explored intermediate operations such as filter(), map(), flatMap(), distinct(), sorted(), limit(), and skip(). We learned that these operations are lazy—they define a processing pipeline…
Introduction In the previous article, we learned that a Stream is not a data structure but a processing pipeline that transforms data through a series of operations. We explored concepts…
Introduction One of the biggest criticisms of Java before version 8 was the amount of boilerplate code required to process collections. Simple tasks such as filtering employees, sorting records, transforming…
Introduction In the previous two articles, we explored Lambda Expressions and Functional Interfaces, the building blocks of functional programming in Java. Although Lambdas significantly reduced boilerplate code, developers quickly noticed…
Introduction In the previous article, we learned how Lambda Expressions dramatically simplified Java code by allowing us to pass behavior instead of creating verbose anonymous classes. However, there is an…
Building Scalable and Consistent Microservices Caching Architectures Caching is one of the most effective techniques for improving application performance. Modern microservices often implement a multi-level cache architecture: L1 Cache: In-memory…
Java 8 introduced one of the most important changes to interfaces: Default methods Static methods inside interfaces Multiple inheritance conflict resolution Functional interfaces Method references Date-Time API Lambda exception handling…
MCQs Q1. Which JVM memory area stores objects? A. Stack B. Heap C. Method Area D. Program Counter Q2. What is Garbage Collection? A. Memory Allocation B. Memory Cleanup of…
Introduction Exception handling is one of the most fundamental concepts in Java. Every Java developer uses exceptions daily, yet many developers struggle to explain: Why exceptions exist Difference between Exception…
Introduction In the previous articles, we built a reusable caching library that provides: L1 Cache using EhCache L2 Cache using Redis or GemFire Distributed Locking Cache Stampede Protection Cache Warming…
