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There are several Pull requests working on the topic. Yue Su proposed a circular array for some metrics. Julian firstly introduced micrometer for monitoring, Chao Wang then improved the design, introduced dropwizardmetrics and formed the first version of this doc. After reviewing the design, we think some of the design is complex and this doc (1) simplify the desgin and (2) compare the performance of micrometer and dropwizardmetrics.
1.2 Targets
Provides a set of metric collector interfaces.
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