Virtual Threads
A core feature of the Project Loom initiative on the Java platform, officially released in Java 21. Virtual threads allow the creation of large numbers of concurrent tasks at minimal overhead by mapping virtual threads onto a small number of operating system threads, simplifying traditional asynchronous programming models.
Timeline (last 90 days)
Java 21 virtual threads (JEP 444) are lightweight threads scheduled by the JVM, with extremely low creation cost, that automatically unmount the carrier thread when blocking, making them suitable for wrapping model calls that wait on network I/O; combined with future.get(timeout) and cancel(true), they enable application-level deadlines and degradation.
Java's virtual threads (Project Loom) are a representative approach to eliminating function color differences through a transparent asynchrony mechanism.
All Facts (3)
传统平台线程每个占用约1MB栈内存，并发上限通常在数千级别；虚拟线程初始栈空间仅几百字节，单个JVM可支撑数百万虚拟线程
85%UnverifiedJava 21 virtual threads (JEP 444) are lightweight threads scheduled by the JVM, with extremely low creation cost, that automatically unmount the carrier thread when blocking, making them suitable for wrapping model calls that wait on network I/O; combined with future.get(timeout) and cancel(true), they enable application-level deadlines and degradation.
50%UnverifiedJava's virtual threads (Project Loom) are a representative approach to eliminating function color differences through a transparent asynchrony mechanism.
50%