Project Reactor · interview question
Which method should you use to convert a blocking call into a non-blocking Mono in a reactive application?
Multiple choiceHardchapter-19-curatedpremiumproject-reactorproject-reactor-mono
Answer and explanation
Correct answer
D. Mono.fromCallable(() -> blockingCall())
Why
Mono.fromCallable() can be used to wrap a blocking call in a non-blocking manner. It defers the execution of the blocking call until the Mono is subscribed to, allowing the rest of the system to remain responsive.
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