You want to measure the duration of a method execution in a Spring Boot app using Micrometer. Which approach correctly uses a Timer to record the time taken by a method processData()?

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Spring Boot - Actuator

You want to measure the duration of a method execution in a Spring Boot app using Micrometer. Which approach correctly uses a Timer to record the time taken by a method processData()?

ATimer timer = new Timer("process.time"); timer.start(); processData(); timer.stop();

BTimer timer = Timer.create("process.time"); timer.record(processData());

CmeterRegistry.timer("process.time").start(); processData(); meterRegistry.timer("process.time").stop();

DTimer timer = Timer.builder("process.time").register(meterRegistry); timer.record(() -> processData());

Step-by-Step Solution

Solution:

Step 1: Identify correct Timer usage in Micrometer
Micrometer uses Timer.builder(name).register() and timer.record(Runnable) to measure durations.
Step 2: Check other options for errors
Options A, C, and D use invalid constructors or methods not supported by Micrometer.
Final Answer:
Timer timer = Timer.builder("process.time").register(meterRegistry); timer.record(() -> processData()); -> Option D
Quick Check:
Use Timer.builder().register() and record() for timing [OK]

Quick Trick: Use timer.record(() -> method()) to measure duration [OK]

Common Mistakes:

Trying to instantiate Timer with new or create()
Calling start() and stop() manually on Timer
Passing method call directly instead of lambda to record()

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More Spring Boot Quizzes

You want to measure the duration of a method execution in a Spring Boot app using Micrometer. Which approach correctly uses a Timer to record the time taken by a method processData()?

Step 1: Identify correct Timer usage in Micrometer

Step 2: Check other options for errors

Final Answer:

Quick Check:

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