filters/auth: release tokeninfo cache mutex earlier #3241
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Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
AlexanderYastrebov
added
the
major
Cached value is readonly so release cache mutex early to
copy and adjust cached value outside of critical section.
```
goos: linux
goarch: amd64
pkg: github.com/zalando/skipper/filters/auth
cpu: Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz
│ HEAD~1 │ HEAD │
│ sec/op │ sec/op vs base │
TokeninfoCache/tokens=1,cacheSize=1,p=0-8 639.4n ± 21% 271.9n ± 6% -57.48% (p=0.000 n=10)
TokeninfoCache/tokens=2,cacheSize=2,p=0-8 625.7n ± 24% 420.4n ± 32% -32.81% (p=0.000 n=10)
TokeninfoCache/tokens=100,cacheSize=100,p=0-8 869.8n ± 17% 463.4n ± 3% -46.72% (p=0.000 n=10)
TokeninfoCache/tokens=100,cacheSize=100,p=10000-8 670.8n ± 12% 594.6n ± 2% -11.36% (p=0.000 n=10)
TokeninfoCache/tokens=4,cacheSize=2,p=0-8 2.553m ± 1% 2.554m ± 1% ~ (p=0.684 n=10)
TokeninfoCache/tokens=100,cacheSize=10,p=0-8 2.581m ± 1% 2.566m ± 0% ~ (p=0.089 n=10)
geomean 10.74µ 7.688µ -28.44%
│ HEAD~1 │ HEAD │
│ B/op │ B/op vs base │
TokeninfoCache/tokens=1,cacheSize=1,p=0-8 344.0 ± 0% 344.0 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=2,cacheSize=2,p=0-8 344.0 ± 0% 344.0 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=100,cacheSize=100,p=0-8 344.0 ± 0% 344.0 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=100,cacheSize=100,p=10000-8 366.0 ± 0% 366.0 ± 1% ~ (p=0.452 n=10)
TokeninfoCache/tokens=4,cacheSize=2,p=0-8 27.00 ± 4% 27.00 ± 0% ~ (p=0.474 n=10)
TokeninfoCache/tokens=100,cacheSize=10,p=0-8 28.00 ± 7% 27.00 ± 7% ~ (p=0.259 n=10)
geomean 149.7 148.8 -0.60%
¹ all samples are equal
│ HEAD~1 │ HEAD │
│ allocs/op │ allocs/op vs base │
TokeninfoCache/tokens=1,cacheSize=1,p=0-8 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=2,cacheSize=2,p=0-8 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=100,cacheSize=100,p=0-8 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=100,cacheSize=100,p=10000-8 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=4,cacheSize=2,p=0-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
TokeninfoCache/tokens=100,cacheSize=10,p=0-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹
geomean ² +0.00% ²
¹ all samples are equal
² summaries must be >0 to compute geomean
```
Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
AlexanderYastrebov
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Cached value is readonly so release cache mutex early to
copy and adjust cached value outside of critical section.