In reactive programming with Spring Boot, which interface represents a stream of 0 or 1 item?
- Mono
- Flux
- Observable
- Stream
In Spring Boot's reactive programming, the Mono interface represents a stream of 0 or 1 item. It's part of Project Reactor, which is used for reactive programming in Spring. A Mono can emit either a single item or no item at all, making it suitable for situations where you expect zero or one result, such as fetching a single record from a database or handling optional values.
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