Which two statements are correct regarding Spring Boot 2.x Actuator Metrics? (Choose two.)
A.
An external monitoring system must be used with Actuator.
B.
The metrics endpoint /actuator/metrics is exposed over HTTP by default.
C.
Timer measures both the number of timed events and the total time of all events timed.
D.
Custom metrics can be measured using Meter primitives such as Counter, Gauge, Timer, and DistributionSummary.
E.
A metric must be created with one or more tags.
The Answer Is:
C, D
This question includes an explanation.
Explanation:
Custom metrics can be measured using Meter primitives such as Counter, Gauge, Timer, and DistributionSummary: Spring Boot Actuator Metrics allows you to define and measure custom metrics using various Meter primitives. These primitives include Counter (counting occurrences), Gauge (providing a current value), Timer (measuring the time taken for a task), and DistributionSummary (collecting and summarizing distribution statistics).
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