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Directive -> plugin (#3363)

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Caught my eye, we name things directive still, esp when talking about
the prometheus *plugin*. Rename everything that needs to be plugin to
'plugin'. Also make sure Metrics is a H2 section (not H1).

Signed-off-by: Miek Gieben <miek@miek.nl>
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Miek Gieben 2019-10-08 10:20:48 +01:00 • committed by GitHub
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plugin/cache/README.md vendored
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@ -61,9 +61,9 @@ Since shards don't fill up perfectly evenly, evictions will occur before the ent
Each shard capacity is equal to the total cache size / number of shards (256). Eviction is random, not TTL based.
Entries with 0 TTL will remain in the cache until randomly evicted when the shard reaches capacity.
# Metrics
## Metrics
If monitoring is enabled (via the *prometheus* directive) then the following metrics are exported:
If monitoring is enabled (via the *prometheus* plugin) then the following metrics are exported:
* `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.