When deploying multiple web applications on an Apache Tomcat server, ensuring each application’s classes and resources are isolated is crucial for maintaining stability, security, and preventing class conflicts. Tomcat achieves this isolation by creating...
ConcurrentHashMap in Java offers a thread-safe alternative to the traditional HashMap. It excels in scenarios where multiple threads need to access and modify the map simultaneously. Here’s a breakdown of its internal workings: Key...
Java’s HashMap is a fundamental data structure for storing key-value pairs. While its basic operations of adding and retrieving elements seem straightforward, a deeper dive reveals a fascinating interplay between efficiency and adaptability. This...
In the ever-demanding world of concurrent applications, managing incoming requests effectively is crucial. Uncontrolled request surges can overwhelm your system, leading to performance degradation and potential crashes. This article explores how semaphores, a powerful...
Core Functionality: CAS is an atomic operation that ensures thread-safe modification of shared variables in concurrent programming scenarios. It involves three key elements: The CAS Process: Key Advantages: Implementation in Java: Java doesn’t provide...
The Java Virtual Machine (JVM) employs a technique called Just-In-Time (JIT) compilation to optimize the performance of your Java applications. Here’s a breakdown of how it works: Traditional Interpretation: JIT Compilation in Action: Benefits...
Java developers often encounter the terms “JIT” (Just-In-Time) and “PGO” (Profile-Guided Optimization) when discussing performance optimization techniques. Both approaches aim to improve the efficiency of Java applications, but they operate in distinct ways. JIT...
In the ever-evolving world of software development, the need to interact with native code from Java applications frequently arises. This interaction allows leveraging existing C/C++ libraries or accessing hardware capabilities unavailable within the Java...
Understanding how virtual threads, introduced in Java 16, interact with underlying OS threads is crucial for optimizing I/O bound tasks. This code snippet demonstrates creating two virtual threads that perform calculations and make slow...
While physical CPU cores provide the foundation for parallelism, traditional operating system threads can become resource-intensive for applications with a high number of concurrent tasks. Enter virtual threads in Java 16, a lightweight alternative...
This example compares two approaches for converting an image to grayscale: a traditional loop-based method and a vectorized approach using the Java Vector API. Scenario: We have a 2D array image representing the image...
