Nested Loops To Stream Conversion Example
Java developers frequently use nested loops to iterate over collections, but as the complexity increases, it becomes harder to read and maintain. Java Streams API provides a declarative approach that...
View ArticleApache Camel vs Apache Kafka: Understanding the Differences
Apache Camel and Apache Kafka are two prominent technologies that serve distinct purposes in the realm of distributed systems and integration. While both are utilized to handle messaging and data flow,...
View ArticleChaos Engineering for Java: Testing Spring Boot Resilience with Gremlin & Litmus
Modern distributed systems must withstand failures—network delays, crashes, and infrastructure outages. Chaos Engineering proactively tests system resilience by injecting controlled failures in...
View ArticleJava Performance Showdown: Arrow, FastUtil, Chronicle
Modern Java applications often handle massive datasets, requiring optimized memory usage, low-latency access, and high throughput. Choosing the right library can dramatically impact performance. In...
View ArticleJava Firebase Cloud Functions: Serverless Backend Guide
Firebase Cloud Functions now supports Java 11 runtime, enabling developers to build robust serverless backends using familiar Java tooling. This guide walks through creating, deploying, and optimizing...
View ArticleExploring Labeled Breaks in Java: Efficient or Error-Prone?
Java provides several control flow mechanisms, including the break statement. A regular break is used to exit loops or switch statements prematurely. However, Java also allows the use of labeled...
View ArticleWireMock with Spring Boot Example
1. Introduction WireMock is a powerful HTTP mock server that stubs and verifies HTTP requests. It provides a controlled test environment, ensuring integration tests are fast, repeatable, and...
View ArticleHow to Open Multiple Projects in the Same Window in IntelliJ IDEA
Working with multiple projects simultaneously is a common need for developers, especially when dealing with microservices, modular architectures, or related repositories. IntelliJ IDEA makes it...
View ArticleZGC vs Shenandoah: Ultra-Low Latency GC for Java
In the world of high-performance computing—where microseconds matter—Java has often been scrutinized for its garbage collection (GC) pauses. Traditional GCs like G1 and Parallel GC introduce...
View ArticleSend and Receive Serialized Objects via Java SocketChannel
Networking is crucial in modern applications, and Java offers powerful tools like SocketChannel for efficient networked systems. Using Java NIO’s non-blocking I/O, SocketChannel enables fast TCP/IP...
View ArticleOpenTelemetry with Spring Boot: Modern Distributed Tracing
In modern microservices architectures, tracking requests as they flow across service boundaries is critical for debugging performance bottlenecks, diagnosing failures, and maintaining system...
View ArticleGraalVM AOT: Is This Finally the End of JVM Warmup?
The Java Virtual Machine has always been a study in contrasts. On one hand, it delivers remarkable peak performance thanks to decades of JIT compiler optimizations. On the other, every Java developer...
View ArticleMocking Serverless & gRPC: When Mockito Isn’t Enough
Modern distributed systems combine serverless functions and gRPC microservices, creating new testing challenges that traditional mocking tools can’t handle. Let’s explore robust solutions for these...
View ArticleJava Stream vs. Flux.fromIterable()
In Java, both Stream and Flux.fromIterable() allow us to process sequences of data in a functional style. However, they are different in design and behaviour, especially regarding synchronous vs....
View ArticleSub-10ms Startup: Quarkus vs. Spring Native – The Race to Instant Java
In today’s cloud-native world, startup time is the new throughput. Serverless computing, Kubernetes scaling, and edge deployments demand applications that launch in milliseconds, not seconds....
View ArticlecURL Request to HTTP Request Conversion Example
1. Introduction The Client URL (cURL) is a tool for transferring data from or to a server using URLs. It supports many protocols including HTTP. It is perfect for testing APIs manually or in shell...
View ArticleManaging Secret Rotation in Java Microservices with HashiCorp Vault and...
In modern cloud-native applications, secrets like database passwords, API keys, and TLS certificates are everywhere. Yet, manually rotating these credentials is error-prone, time-consuming, and risky....
View ArticleMockito vs. Mocking the JVM: Bytecode Manipulation for Ultimate Test Control
Mockito is the go-to mocking framework for Java developers, but it has limits—it can’t mock final classes, static methods, or native calls. When you need to test legacy code or tightly coupled systems,...
View ArticleMocking JDBC Components in Unit Tests with Mockito
Unit testing JDBC-based code can be challenging due to its reliance on live database interactions. Using Mockito, we can mock java.sql components such as DataSource, Connection, and ResultSet to test...
View ArticleThe Forbidden Maven Cache: How to Break CI in 10 Ways
The .m2 cache is Maven’s silent guardian—until it turns into your worst enemy. A corrupted cache can derail builds, waste hours of debugging, and even break CI pipelines in spectacular ways. Here’s how...
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