How do you implement the mechanism for obtaining a statement for a user: synchronously or asynchronously?

To obtain a user statement, it is preferable to use an asynchronous mechanism. This is because generating the statement can be a resource-intensive operation, involving database queries, external services, or processing large volumes of data. An asynchronous approach allows the main application thread not to be blocked, improving responsiveness and scalability.

For example, in Java, you can use CompletableFuture for asynchronous statement retrieval:

public CompletableFuture<Statement> getUserStatementAsync(String userId) {
    return CompletableFuture.supplyAsync(() -> {
        // Logic for obtaining and generating the statement
        return statementService.generateStatement(userId);
    });
}

If the statement is needed instantly and is generated very quickly, a synchronous call can be used, but in most cases, asynchronous is preferable.