[Solved] Why might this Micrometer Timer code not record the ... Why might this Micrometer Timer code not record the duration as expected?Timer timer = Timer.builder("task.duration") .register(meterRegistry); | Spring Boot

Spring Boot - Actuator

Why might this Micrometer Timer code not record the duration as expected?

Timer timer = Timer.builder("task.duration")
  .register(meterRegistry);
timer.record(() -> { throw new IllegalStateException(); });

ATimer requires a return value from the lambda

BThe exception interrupts timing, so duration is not recorded

CTimer cannot be registered without a description

DIllegalStateException is not supported by Timer

Step-by-Step Solution

Solution:

Step 1: Understand Timer.record behavior
Timer records duration of successful execution.
Step 2: Effect of exception
Exception thrown interrupts execution, so timing is aborted.
Final Answer:
The exception interrupts timing, so duration is not recorded -> Option B
Quick Check:
Exceptions prevent Timer from recording [OK]

Quick Trick: Exceptions stop Timer from recording duration [OK]

Common Mistakes:

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Why might this Micrometer Timer code not record the duration as expected?