Mono vs Flux in Reactive Stream

Question

As per the documentation:

Flux is a stream which can emit 0..N elements:

Flux fl = Flux.just(\"a\", \"b\",         


        

Answer 1

From the docs here

This distinction carries a bit of semantic information into the type, indicating the rough cardinality of the asynchronous processing. For instance, an HTTP request produces only one response, so there is not much sense in doing a count operation. Expressing the result of such an HTTP call as a Mono thus makes more sense than expressing it as a Flux, as it offers only operators that are relevant to a context of zero items or one item.