v0.16.94

Changes

metrics: add IncCounter benchmark (#2378)
Benchmark stats for the #2374 change:

$ go test ./metrics -run=NONE -bench=Benchmark -count=10 -benchmem > /tmp/no-go.txt
$ git checkout 0872c3269812f787655ecff6a921b5ce0fad9d1c
$ go test ./metrics -run=NONE -bench=Benchmark -count=10 -benchmem > /tmp/with-go.txt
$ benchstat /tmp/with-go.txt /tmp/no-go.txt
name                      old time/op    new time/op    delta
MeasureSincePrometheus-8     370ns ± 1%     368ns ± 0%    -0.61%  (p=0.000 n=9+9)
MeasureSinceCodaHale-8       629ns ± 6%     335ns ± 1%   -46.77%  (p=0.000 n=9+9)
IncCounterPrometheus-8       276ns ± 5%     252ns ± 1%    -8.88%  (p=0.000 n=10+10)
IncCounterCodaHale-8         375ns ±11%      60ns ± 1%   -84.03%  (p=0.000 n=10+9)
name                      old alloc/op   new alloc/op   delta
MeasureSincePrometheus-8     32.0B ± 0%     32.0B ± 0%      ~     (all equal)
MeasureSinceCodaHale-8       73.7B ±42%      0.0B       -100.00%  (p=0.000 n=10+10)
IncCounterPrometheus-8       32.0B ± 0%     32.0B ± 0%      ~     (all equal)
IncCounterCodaHale-8         32.0B ± 0%      0.0B       -100.00%  (p=0.000 n=10+10)
name                      old allocs/op  new allocs/op  delta
MeasureSincePrometheus-8      2.00 ± 0%      2.00 ± 0%      ~     (all equal)
MeasureSinceCodaHale-8        1.00 ± 0%      0.00       -100.00%  (p=0.000 n=10+10)
IncCounterPrometheus-8        2.00 ± 0%      2.00 ± 0%      ~     (all equal)
IncCounterCodaHale-8          1.00 ± 0%      0.00       -100.00%  (p=0.000 n=10+10)

Docker image

Docker image is available in Zalando's Open Source registry:

docker run -it registry.opensource.zalan.do/teapot/skipper:v0.16.94 skipper --help
# arm64
docker run -it registry.opensource.zalan.do/teapot/skipper-arm64:v0.16.94 skipper --help
# arm v7 32bit
docker run -it registry.opensource.zalan.do/teapot/skipper-armv7:v0.16.94 skipper --help