Advanced Spring Boot Concepts(Java 17)

Spring Boot has evolved significantly with Java 17 and Spring Boot 3, introducing cutting-edge features like virtual threads, native image compilation, reactive programming, and enhanced security. In this blog, we will explore advanced Spring Boot concepts that every developer should master.

1. Native Image Compilation with GraalVM

Java 17 improves GraalVM support, allowing Spring Boot apps to compile into native executables for faster startup times and lower memory consumption.

How to Compile a Native Image

mvn -Pnative native:compile
./target/app

2. Virtual Threads (Project Loom) in Spring Boot

Java 17+ introduces Project Loom, enabling lightweight virtual threads to enhance concurrency without blocking threads.

Example: Virtual Threads in ExecutorService

try (var executor = Executors.newVirtualThreadPerTaskExecutor()) {
    IntStream.range(0, 10).forEach(i ->
        executor.submit(() -> {
            System.out.println(Thread.currentThread());
        })
    );
}

Spring Boot Virtual Threads Integration