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Java Virtual Threads

Virtual Threads Performance in Spring Boot

Spring Boot is increasingly favored in the Java ecosystem. This post compares virtual threads' performance against native threads in a Spring Boot application calculating the Fibonacci sum for 10,000 using a REST endpoint. Load testing with JMeter reveals slight throughput differences, highlighting virtual threads' efficiency in resource consumption despite minimal performance benefits in CPU-intensive tasks.

Virtual Threads – A Definite Advantage

This article discusses the significance of Virtual Threads in Java, introduced in Java 21, emphasizing their potential to enhance application performance while minimizing management overhead. It compares the behavior of One Million platform threads versus virtual threads, highlighting the reduced resource consumption and lower likelihood of OutOfMemoryError with virtual threads, showcasing their scalability benefits.

Pitfalls to avoid when switching to Virtual threads

Java virtual threads, introduced in JDK 19, enhance application performance but have pitfalls. Avoid synchronized methods, as they prevent relinquishing OS thread control, suggesting ReentrantLock instead. Also, replace thread pools with Semaphore for limited backend calls and be cautious with ThreadLocal variables to prevent excessive memory usage when using many virtual threads.

Is Java Virtual Threads lightweight?

Java virtual threads can significantly reduce memory consumption and thread creation time compared to platform threads. While they consume less memory by utilizing Java heap memory, their execution time is tied to platform threads. Virtual threads enhance efficiency, particularly in applications with numerous threads or frequent creation, offering potential improvements in availability and throughput.

Advantages of Java Virtual Threads

Java virtual threads, introduced in JDK 19, offer a lightweight threading model that significantly reduces memory consumption and enhances application availability and throughput. They prevent OutOfMemoryErrors related to thread creation and improve code quality by allowing sequential implementation. Compatible with existing platform threads, virtual threads enable the handling of millions without overhead.

APIs to create Java Virtual Thread

Java virtual threads, introduced in JDK 19, enhance application availability, throughput, and memory efficiency. This post discusses multiple APIs for creating virtual threads, including Thread.startVirtualThread(), Thread.ofVirtual().start(), and Executors.newVirtualThreadPerTaskExecutor(). Understanding these APIs helps developers leverage virtual threads for improved performance and functionality in Java applications.

Java Virtual Threads – Easy introduction

Java Virtual Threads, introduced in JDK 19, enhance application efficiency by optimizing thread life cycles. These lightweight threads reduce memory usage and improve availability, throughput, and code quality. They are allocated to platform threads only during active tasks, making better use of operating system resources and offering APIs to create them easily.

DOES 32-BIT OR 64-BIT JVM MATTER ANYMORE?

The article compares 32-bit and 64-bit Java Virtual Machines (JVMs), highlighting that while 64-bit JVMs can support larger memory, they may suffer slight performance degradation. The choice of JVM depends on memory needs: applications requiring over 2GB should use 64-bit JVM, considering garbage collection pause times and native library compatibility.

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