spring_reference/V. Spring Boot Actuator: Pr.../44.7. Dropwizard Metrics.md

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### 44.7. Dropwizard指标
[Dropwizard Metrics](https://dropwizard.github.io/metrics/)的用户会发现Spring Boot指标被发布到了`com.codahale.metrics.MetricRegistry`。当你声明对`io.dropwizard.metrics:metrics-core`库的依赖时会创建一个默认的`com.codahale.metrics.MetricRegistry` Spring bean如果需要自定义你可以注册自己的@Bean实例。来自于`MetricRegistry`的指标也是自动通过`/metrics`端点暴露的。
用户可以通过使用合适类型的指标名称作为前缀来创建Dropwizard指标比如`histogram.*`, `meter.*`)。