What key features and implemented solutions have you used in your Java projects to ensure their efficiency and stability?

To ensure the efficiency and stability of Java projects, I used the following approaches and solutions:

• Memory optimization: proper management of objects, use of connection pools and caching.
• Exception handling: centralized logging and correct error management to prevent failures.
• Multithreading and asynchrony: using ExecutorService, CompletableFuture to improve performance.
• Profiling and monitoring: integration with tools (e.g., JMX, Prometheus) to track metrics and identify bottlenecks.
• Testing: writing unit and integration tests to prevent regressions.
• Using modern frameworks and libraries: for example, Spring Boot for simplifying configuration and dependency management.

Example of using CompletableFuture for asynchronous processing:

CompletableFuture.supplyAsync(() -> {
    // Long operation
    return computeResult();
}).thenAccept(result -> {
    System.out.println("Result: " + result);
});