Additional Notes
Why would you choose `concatMap()` instead of `flatMap()`?
Track: Java
Topic: Reactive Streams
Focus: Functional Pipelines (flatMap)
Java: Functional Pipelines (flatMap)
Answer
Use `concatMap()` when order matters and you want one inner publisher processed at a time.
`concatMap()` trades concurrency for determinism. That can be the right choice when processing order-sensitive business events or when you need the output sequence to match the source sequence.
`concatMap()` trades concurrency for determinism. That can be the right choice when processing order-sensitive business events or when you need the output sequence to match the source sequence.
Topics: Functional Pipelines (flatMap) Java Reactive Streams