How to handle failures with Mutiny

[giscus[bot]]

How to handle failures with Mutiny

Quarkus: Supersonic Subatomic Java

https://quarkus.io/blog/mutiny-failure-handling/

[ashutoshk2206]

I am trying to understand the difference between call() and tranformToUni(). Above example works fine but when I change "transformToUniAndConcatenate" to "call", it doesn't work as expected.
Can you please share some clarification on when to use call vs transform ?

[ichrist-gr]

With .call() operator you declare that you want to perform a non-blocking action and you actually do not care about it's returned value. With .transformToUni() operator you execute a non-blocking operation and you want to retrieve the response from this operation. So you get as a result the response from your db/rest-service