diff --git a/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc b/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc index a0ad8f04632..37a65f31482 100644 --- a/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc +++ b/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc @@ -1076,13 +1076,17 @@ used by default if you are on Java 8 or if you are using Dropwizard metrics. [[production-ready-metric-writers]] === Metric writers, exporters and aggregation -Spring Boot provides a couple of implementations of a marker interface called `Exporter` -which can be used to copy metric readings from the in-memory buffers to a place where they -can be analyzed and displayed. Indeed, if you provide a `@Bean` that implements the -`MetricWriter` interface and mark it `@ExportMetricWriter`, then it will automatically be -hooked up to an `Exporter` and fed metric updates every 5 seconds (configured via -`spring.metrics.export.delay-millis`). In addition, any `MetricReader` that you define and -mark as `@ExportMetricReader` will have its values exported by the default exporter. + +Spring Boot provides a couple of implementations of a marker interface +called `Exporter` which can be used to copy metric readings from the +in-memory buffers to a place where they can be analyzed and +displayed. Indeed, if you provide a `@Bean` that implements the +`MetricWriter` interface (or `GaugeWriter` for simple use cases) and +mark it `@ExportMetricWriter`, then it will automatically be hooked up +to an `Exporter` and fed metric updates every 5 seconds (configured +via `spring.metrics.export.delay-millis`). In addition, any +`MetricReader` that you define and mark as `@ExportMetricReader` will +have its values exported by the default exporter. The default exporter is a `MetricCopyExporter` which tries to optimize itself by not copying values that haven't changed since it was last called (the optimization can be