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explain drop metric (#3706)

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Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
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Chris O'Haver 2020-02-29 02:07:49 -05:00 • committed by GitHub
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plugin/cache/README.md vendored
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@ -73,7 +73,7 @@ If monitoring is enabled (via the *prometheus* plugin) then the following metric
* `coredns_cache_size{server, type}` - Total elements in the cache by cache type.
* `coredns_cache_hits_total{server, type}` - Counter of cache hits by cache type.
* `coredns_cache_misses_total{server}` - Counter of cache misses.
* `coredns_cache_drops_total{server}` - Counter of dropped messages.
* `coredns_cache_drops_total{server}` - Counter of responses excluded from the cache due to request/response question name mismatch.
* `coredns_cache_served_stale_total{server}` - Counter of requests served from stale cache entries.
Cache types are either "denial" or "success". `Server` is the server handling the request, see the