Java: Project Reactor: Mono

It's a way to handle data flow control. Frame the concept in practical terms so you can explain it during interview discussion.

Backpressure is a mechanism to manage the flow of data between producers and consumers in reactive streams, preventing the consumer from being overwhelmed by the producer. Although Mono typically doesn't deal directly with backpressure due to its single-item nature, understanding its role is crucial when using Flux, which can emit multiple items.