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Go駆動開発で超速Pushエンジンを作った話
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kadota kyohei
May 31, 2014
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Go駆動開発で超速Pushエンジンを作った話
Go Conference 2014 spring で発表した資料。
受託開発に持ち込んだ事例紹介。
http://connpass.com/event/6370/
kadota kyohei
May 31, 2014
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Transcript
Goۦಈ։ൃͰPushΤϯδϯΛ࡞ͬͨ @plan9user GoCon 2014 spring
GoΛ͍͍ͨҰ৺Ͱडୗۀ࣋ͪࠐΜͩ࣌ͷ
ࣗݾհ • ଟګฏ • झຯ”Plan 9”Ͱ͢ʂ • Go͖ͳΒPlan 9ͷࢥΉͣ •
2011͔ΒϑΣϯϦϧͰಇ͍ͯ·͢
• ͜ͳ͍ͩSleipnir 6͕ग़·ͨ͠ʂ • ڞಉ։ൃ෦ • اۀ༷͔Βͷडୗ։ൃΛߦ͏෦ॺ • ࣮հ -
http://biz.fenrir-inc.com • Sleipnirͷ͝ҙݟެࣜαΠτ͔Β ϑΣϯϦϧגࣜձࣾ
• εϚʔτϑΥϯΞϓϦ։ൃͬͯ·͢ • iOS, Android • Windows 8 (एׯ) •
ࡢ͋ͨΓ͔ΒXamarin͡Ί·ͨ͠ ۀ༰
go? • ϓογϡ௨ • ࠃαʔϏεͰͳ͚Ε×ɹͱ͔ • ࣗͰશମΛίϯτϩʔϧ͍ͨ͠ɹͱ͔ • ങ͍Γ͍ͨɹͱ͔
push௨ͷ͘͠Έ 1. ΞϓϦτʔΫϯΛαʔόʹૹ৴ 2. αʔόอଘ͍ͯ͠ΔτʔΫϯͱϝοηʔδ Ληοτʹͯ͠APNs/GCMૹ৴ 3. ϝοηʔδ͕֤ಧ͘ ܾͯ͘͠͠ͳ͍Μ͚ͩͲ…
• ࠷ॳPHPͰ࣮ • ਫ४Λຬͨͤͳ͍ • ेສ௨ʹ͑ΒΕͳ͍ • ઃܭ͕·͔ͣͬͨ • PHPѱ͘ͳ͍
performance problems… ඵ ඵ ඵ ඵ ඵ ສ ສ ສ ສ
ͩΊͩͬͨͱ͜Ζ
problem? • PHPͳͷͰฒྻԽ͕͔ͬͨ͠ • ೋॏૹ৴ࢭͷͨΊDBΛΩϡʔʹ͍ͯͨ͠ • ௨৴ΤϥʔͰϦτϥΠ͖͢߹్த Ͱམͪͨ߹Λఆ • ྃϚʔΫDBʹ͍࣋ͬͯͨ
goal? • ॲཧͷͪ࣌ؒΛͳͯ͘͠ੑೳΛ্͛Δ • ͕ଟ͍ͱ͖ࢄͯ͠ૹ৴͢Δ • ෳϚγϯͰͻͱͭͷγεςϜʹ͢Δ • DBͷґଘΛͳ͘͢
͓ʁ
͜ΕGoͷग़൪͡ΌͶʁ
GoΛΉཧ༝(࣌) • Rob PikeRuss Cox͕ࢀՃͯ͠Δ • Plan 9ʹؔΘ͓ͬͯΒΕ·ͨ͠ • Alef,
Limbo͔Βଓ͘CSPྑ͍ • ඪ४ύοέʔδॆ࣮ͯͦ͠͏(งғؾ)
GoͱXamarinಉ࣌ೖܾఆ • Α͘௨ͬͨͳͱࢥ͍·͢… • ӡ͕ྑ͘ظؒݶఆͷΞϓϦͩͬͨ • ظӡ༻ͳΒอकߟ͑Δඞཁ͕͋Δ • ։ൃظ͕ؒൺֱత͘औΕͨ •
࠷ॳௐͳ͕Βॻ͘ͷͰޮѱ͍
GoͰॻ͘ʂ
overview GSPOU GSPOU DUMS BHFOU BHFOU BHFOU rpcଓ ϊʔυ(ϓϩηε)
net/rpcύοέʔδ // ܾ·ͬͨܗͷϝιουΛΤΫεϙʔτ͓͍ͯͯ͠ fund (agent *Agent) Broadcast(r *Request, res *Response)
error { return nil } ! // ผͷϊʔυ͔ΒrpcΛίʔϧ͢Δ c, _ := rpc.Dial(“net”, “localhost:17030”) err := c.Call(“Broadcast”, r, &res)
front GSPOU GSPOU DUMS BHFOU BHFOU BHFOU rpcଓ ϊʔυ(ϓϩηε)
front • Ҋ݅ݻ༗ͷϩδοΫΛ୲ • ΄ͱΜͲ͕JSONΛड৴ͯ͠ɺctlrϦΫΤετૹ৴ • Ҋ݅ݻ༗ͷϩδοΫͳͷͰ࣮͢Δ • DBؔͷॲཧ͜ͷϊʔυ͕ରԠ͢Δ
controller GSPOU GSPOU DUMS BHFOU BHFOU BHFOU rpcଓ ϊʔυ(ϓϩηε)
controller • front͔ΒͷrpcϦΫΤετΛड͚͚Δϊʔυ • ෳͷΤʔδΣϯτΛཧ͢Δ • 1ϦΫΤετͷ௨͕ଟ͗͢Δ߹ෳ ΤʔδΣϯτׂసૹ • ΤʔδΣϯτͷબผۭ͍͍ͯΔͷΛબͿ
*
։͍͍ͯΔagentΛબ // ϦΫΤετ༻νϟωϧΛ1ຊ͚ͩ༻ҙ req := make(chan *Request, bufSize) ! //
ཧ͢ΔϊʔυɺϦΫΤετ༻νϟωϧ͔Βड৴͢ΔΰϧʔνϯΛىಈ͓ͯ͘͠ for agent := range agents { go func(c chan *Request){ _ = <-c }(req) } ! // νϟωϧʹϦΫΤετΛ͛Δͱػ͍ͯ͠ΔΰϧʔνϯͷͲΕ͔͕र͏ select { case req <- newReq: …. case <-time.After(timeoutInterval): …
agent GSPOU GSPOU DUMS BHFOU BHFOU BHFOU rpcଓ ϊʔυ(ϓϩηε)
• ίϯτϩʔϥ͔ΒͷϦΫΤετΛ࣮ࡍʹ APNs/GCMૹ৴͢Δ • ෳϦΫΤετՄೳͳΒ1ͭʹ·ͱΊΔ * agent
ෳ·ͱΊͯૹ৴ que := make(chan *Message, bufSize) … // ctlr͔ΒͷϦΫΤετड৴ req
:= <-que msgs = append(msgs, req) for len(que) > 0 { msgs = append(msgs, <-que) } conn.WriteMessages(msgs)
ੑೳଌఆ
ੑೳଌఆ • ࣮ࡍͷAPNs/GCMΛͬͯੑೳࢼݧ͍͠ • ࢼݧʹ͑͏ΔྔͷΛ͍࣋ͬͯͳ͍ • GCM1ສ݅ૹΔͱInternalServerError • Fake APNs/GCMΛ࡞ͬͯϕϯνϚʔΫ
• গͳ͘ͱલճΑΓྑ͘ͳͬͨͷ͔͔Δ
ςετίʔυ // ςετ༻Fake APNsαʔό(ຊgateway.push.apple.com:2195)Λىಈ s := apnstest.NewServer(func(w io.Writer, msg *apns.Message)
{ // wʹԿ͔Write͢ΕΤϥʔͱͯ͠ΫϥΠΞϯτʹฦ͢ // Կ͠ͳ͚Εਖ਼ৗʹ௨ྃ }) cli := NewClient(s.Addr) msg := newMessage() ! que := make([]<-chan error, b.N) for i := 0; i < b.N; i++ { que[i] = cli.Go(msg) }
result. • ฒྻʹΑΔ͕10ʙ 30ඵͰεέʔϧ͢Δ Α͏ʹͳͬͨ • άϥϑ15ฒྻఔ • 2ʙ300ສ͋ͨΓͳΒ ͓ͦΒ͘ಉ͡ఔ
ඵ ඵ ඵ ඵ ඵ ສ ສ ສ ສ 1)1൛ (P൛
डୗ։ൃͱGo
• डୗ։ൃͷ߹ɺGoಋೖ͘͠Έ͑Δ • ٕज़ऀ͕গͳ͍ • نͷେ͖ͳ։ൃʹ͑ΒΕͳ͍ • 2ޙ3ޙαϙʔτ͞Ε͍ͯΔ͔ෆಁ໌ • ࣮͕গͳ͍
Goͬͯେৎʁ
• ڥߏங͕؆୯ • όΠφϦ͚ͩͰಈ࡞͢Δ ˠຊ൪ڥͰϥΠϒϥϦཧ͕ෆཁ • WindowsͰLinuxͰಈ࡞͢Δ • ࠓྲྀߦΔݴޠʹϊϛωʔτ •
ྲྀߦͬͨࠒʹࣗຫͰ͖Δɺ͔ʁ ͚ͩͲϝϦοτ
GoͰྑ͔ͬͨ͜ͱ͋ͬͯ Go͔ͩΒࠔͬͨ͜ͱແ͍ डୗͰGoΛྲྀߦΒ͍ͤͯ͜͏
͋Γ͕ͱ͏͍͟͝·ͨ͠