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author | 2024-03-11 21:09:09 +0100 | |
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committer | 2024-03-11 16:09:09 -0400 | |
commit | 0d6e113f9036596df3e291028ad9ffbbdca9677e (patch) | |
tree | 5abb58200b7e97d55cf773e6519c7c225d888bf1 /plugin/plugin.go | |
parent | a4cbd95795d4d5cd69ddd6628eb254fade3b6037 (diff) | |
download | coredns-0d6e113f9036596df3e291028ad9ffbbdca9677e.tar.gz coredns-0d6e113f9036596df3e291028ad9ffbbdca9677e.tar.zst coredns-0d6e113f9036596df3e291028ad9ffbbdca9677e.zip |
Enable Prometheus native histograms (#6524)
Add a NativeHistogramBucketFactor parameter to the use of
`NewHistogramVec` in order to enable use of Prometheus Native
Histograms.
This will store automatically computed sparse buckets in CoreDNS.
If a compatible Prometeus requests native histograms this data will
returned instead of the static buckets.
The default factor of 1.05 should provide high quality resolution data.
Signed-off-by: SuperQ <superq@gmail.com>
Diffstat (limited to 'plugin/plugin.go')
-rw-r--r-- | plugin/plugin.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/plugin/plugin.go b/plugin/plugin.go index 51f5ba79c..ca5fe0100 100644 --- a/plugin/plugin.go +++ b/plugin/plugin.go @@ -108,5 +108,9 @@ var TimeBuckets = prometheus.ExponentialBuckets(0.00025, 2, 16) // from 0.25ms t // SlimTimeBuckets is low cardinality set of duration buckets. var SlimTimeBuckets = prometheus.ExponentialBuckets(0.00025, 10, 5) // from 0.25ms to 2.5 seconds +// NativeHistogramBucketFactor controls the resolution of Prometheus native histogram buckets. +// See: https://pkg.go.dev/github.com/prometheus/client_golang@v1.19.0/prometheus#section-readme +var NativeHistogramBucketFactor = 1.05 + // ErrOnce is returned when a plugin doesn't support multiple setups per server. var ErrOnce = errors.New("this plugin can only be used once per Server Block") |