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The document discusses Fluentd's changes to its plugin API between versions 0.12 and 0.14. In 0.14, the API was overhauled to separate entry points from implementations and introduce a plugin base class to control data and control flow. A compatibility layer was added to allow most 0.12 plugins to work unmodified in 0.14 by handling calls to overridden methods. However, plugins that override certa
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"Service Metrics" is a construct used for visualizing and monitoring metrics that are not directly tied to any specific server, making it possible, for example, to visualize an entire web service's response time and status code distribution, and check if response time is slowing down or if the error rate is going up. Using fluent-plugin-mackerel service metrics can be posted to Mackerel via fluent
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