Java: Project Reactor: Mono

Return Mono immediately without blocking. Frame the concept in practical terms so you can explain it during interview discussion.

To ensure a database call remains non-blocking, return a Mono right away. The database operation executes asynchronously, and the result is processed once available. This helps maintain scalability by freeing up threads. For example, in an e-commerce app, you might query for product details using a Mono, letting the server handle other tasks while waiting for a response.