Java · Senior · Theory

You orchestrate several calls to external services using CompletableFuture. What pitfalls have you run into, and how do you work around them?

~4 min by voice

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This checks whether the candidate understands where CompletableFuture's async code actually runs and how it breaks in production: thread pools, exceptions, timeouts, cancellation, context. For a senior, it matters to back this up with a real incident and working defensive techniques.

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concurrency completable future

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~4 min