Project Reactor · interview question
In a reactive system, what is a potential danger of using a blocking call inside a flatMap() operation?
Multiple choiceMediumchapter-19-curatedpremiumproject-reactorfunctional-pipelines-flatmap
Answer and explanation
Correct answer
B. It can lead to blocking the entire event loop.
Why
Using a blocking call inside flatMap() can block the event loop, which is critical in a non-blocking system. This can severely impact the system's ability to process other requests concurrently.
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