Explain what is meant by asynchronous execution of requests in programming.

Asynchronous request execution means that the program initiates a request and continues executing other tasks without waiting for an immediate response. This prevents blocking the main thread and improves application responsiveness. In Java, CompletableFuture or libraries supporting non-blocking I/O are often used for asynchrony.

Example with CompletableFuture:

CompletableFuture.supplyAsync(() -> {
    // Long operation, e.g., server request
    return fetchDataFromServer();
}).thenAccept(data -> {
    // Process received data
    System.out.println("Data received: " + data);
});

System.out.println("Request sent, continuing work");

Here, the request runs in a separate thread, and the main thread is not blocked.