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ࢄΒͬͨτϨʔεΛܨ͛Δٕज़
ΏΔSREษڧձ #8 LT
Nov. 29 - Kazuki Obata / @donkomura_
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͍ͨ͜͠ͱ
- ΦϒβʔόϏϦςΟͷߏཁૉʮτϨʔεʯ
- όϥόϥʹͳͬͯ͠·͏ͱࠔΔ
- ͱͳΔՕॴɾϙΠϯτΛղઆ
- εύϯΛܨ͛ͯτϨʔεʹ͢Δํ๏Λհ
- ίʔυϕʔεͰղઆ
- ֶͼ
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APM ͰτϨʔεܨ͕Βͳ͍...
- ىͬͨ͜͜ͱ
- OpenCensus ͱ dd-trace ͷτϨʔε͕όϥόϥ
- ܭͨ͠τϨʔεͱ Redis ͷτϨʔε͕όϥόϥ
- ༗ޮͳใ͕ͺͬͱݟΕͳ͍☹
- Ͳ͕͔͜ɺϘτϧωοΫʹͳ͍ͬͯΔ͔ҰͰ͔Βͳ͍
- εύϯ͕όϥόϥͰௐࠪͮ͠Β͍
https://docs.datadoghq.com/ja/tracing/glossary/
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ղܾࡦ
τϨʔείϯςΩετΛ͢Δ
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τϨʔείϯςΩετΛ͢Δ
- τϨʔείϯςΩετͱ
- τϨʔεIDɾεύϯIDɾεύϯID Λ࣋ͬͨσʔλߏ
- ಉ͡τϨʔείϯςΩετ͔Βੜ͞Εͨεύϯಉ͡τϨʔεʹଐ͢Δ
- ࢠؔҡ࣋͞ΕΔ
- ͷݪҼ
- TraceIDͷϑΥʔϚοτ͕ҟͳΔ
- τϨʔείϯςΩετΛඞཁͳՕॴͰ͍͑ͯͳ͍
- ผʑͷτϨʔείϯςΩετΛ͍ͬͯͨ
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ͭͳ͛ํ
1. OpenCensus ͱ ddtrace ͷτϨʔεΛܨ͛Δ
Go (dd-trace-go) ͷྫ
// ϑΥʔϚοτΛ͑Δ
carrier := tracer.TextMapCarrier{
tracer.DefaultTraceIDHeader:
strconv.FormatUint(binary.BigEndian.Uint64(traceID[8:]), 10),
tracer.DefaultParentIDHeader:
strconv.FormatUint(binary.BigEndian.Uint64(spanID[:]), 10),
}
// ίϯςΩετͷੜ
sctx, _ := tracer.Extract(carrier)
// εύϯͷੜ
span, ctx := tracer.StartSpanFromContext(ctx, "op1", tracer.ChildOf(sctx))
// ctx ΛͬͯଞͷεύϯΛੜ
span, ctx := tracer.StartSpanFromContext(ctx, "op2", tracer.ChildOf(sctx))
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ͭͳ͛ํ
2. Redis ͷτϨʔεΛܨ͛Δ
Redigo ͷྫ
// Redis ΫϥΠΞϯτͷ Wrapper Λ͏
pool := &redis.Pool{
Dial: func() (redis.Conn, error) {
return redigotrace.Dial("tcp", "127.0.0.1:6379",
redigotrace.WithServiceName("my-redis-backend"),
)
},
}
// ίϯςΩετΛ͍ճ͢
c.Do("SET", "food", "cheese", ctx)
https://pkg.go.dev/gopkg.in/DataDog/[email protected]/contrib/gomodule/redigo
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·ͱΊ
- ཁ͢ΔʹτϨʔείϯςΩετΛ͍·Θͤྑ͍
- ಉ͡τϨʔεIDΛ͏
- εύϯͷࢠؔ
- ܨ͕ͬͯͳ͍ͱ͖τϨʔεIDΛ֬ೝ
- τϨʔεID͕ҟͳ͍ͬͯͳ͍͔
- e.g. ϑΥʔϚοτ͕ҧ͏ɺencode/decode ͕ؒҧ͍ͬͯΔ
- τϨʔείϯςΩετͷ͕Ͱ͖͍ͯΔ͔
- e.g. ctx ͷ͍ͯ͠ͳ͍ɺ͍ͬͯͳ͍
ࢄΒͬͨτϨʔεΛܨ͛Δ