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わたしの研究開発紹介 - 技術者から研究者へ - / Introduction to my r...

わたしの研究開発紹介 - 技術者から研究者へ - / Introduction to my research

1. なぜ技術者から研究者へ転向したのか
2. 事業での実践を研究へ昇華した事例 (前職)
3. 今後の研究開発の構想 (さくらインターネット)

Yuuki Tsubouchi (yuuk1)

April 10, 2019
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  1. ͘͞ΒΠϯλʔωοτ גࣜձࣾ (C) Copyright 1996-2019 SAKURA Internet Inc ͘͞ΒΠϯλʔωοτ ݚڀॴ

    Θͨ͠ͷݚڀ։ൃ঺հ - ٕज़ऀ͔Βݚڀऀ΁ - 2019/04/10 ݚڀһ ௶಺ ༎थ @yuuk1t / id:y_uuki
  2. 2 ࣗݾ঺հ ௶಺ ༎थ / Ώ͏͏͖ https://yuuk.io/ େࡕେֶ جૅ޻ֶ෦ ৘ใՊֶՊ

    େࡕେֶ େֶӃ৘ใՊֶݚڀՊ ɹ৘ใωοτϫʔΫֶઐ߈ ത࢜લظ՝ఔ ܦྺ גࣜձࣾ͸ͯͳ WebΦϖϨʔγϣϯΤϯδχΞɾSRE ͘͞ΒΠϯλʔωοτגࣜձࣾ ͘͞ΒΠϯλʔωοτݚڀॴ ݚڀһ ฒྻॲཧ TCP/IPελοΫ WebαʔϏεͷ ։ൃɾӡ༻ WebɾΠϯλʔωοτ ج൫ٕज़ݚڀ 5.5೥ 5೥ ݱࡏ
  3. 9 ݚڀ։ൃ࣮੷1 1.௶಺༎थ, ࣗવͷ͝ͱ͘ෳࡶԽͨ͠΢ΣϒγεςϜͷࣗ཯తӡ༻ʹ޲͚ͯ, ਓ޻஌ೳֶձ ߹ಉݚڀձ ୈ3ճ΢Σϒ αΠΤϯεݚڀձ(ট଴ߨԋ), 2017೥11݄24೔ 2.௶಺༎थ,

    ߴ౓ʹൃୡͨ͠γεςϜͷҟৗ͸ਆͷౖΓͱݟ෼͚͕͔ͭͳ͍, IPSJ-ONE 2017, 2017೥03݄18೔ 3.௶಺༎थ, αʔόϞχλϦϯά޲͚࣌ܥྻσʔλϕʔεͷ୳ڀ, ୈ9ճΠϯλʔωοτͱӡ༻ٕज़γϯϙδ΢Ϝ (IOTS2016)(ট଴ߨԋ), 2016೥12݄01೔ ɾࠪಡ෇͖࿦จ(ࠃ಺) ɾߨԋ(ࠃ಺) 1.௶಺༎थ, ࿬ࡔேਓ, ᖛా݈, দ໦խ޾, Ѩ෦ത, দຊ྄հ, “HeteroTSDB: ҟछࠞ߹ΩʔόϦϡʔετΞΛ༻͍ͨࣗಈ ֊૚ԽͷͨΊͷ࣌ܥྻσʔλϕʔεΞʔΩςΫνϟ”, Πϯλʔωοτͱӡ༻ٕज़γϯϙδ΢Ϝ࿦จू, 2018, 7-15 (2018-11-29), 2018೥12݄. ɾࠃࡍձٞ࿦จ 1.Yuuki Tsubouchi, Asato Wakisaka, Ken Hamada, Masayuki Matsuki, Hiroshi Abe, Ryosuke Matsumoto, “HeteroTSDB: An Extensible Time Series Database for Automatically Tiering on Heterogeneous Key-Value Stores”, Proceedings of The 43rd Annual International Computers, Software & Applications Conference (COMPSAC), July 2019. (to apper)
  4. 10 ݚڀ։ൃ࣮੷2 ɾॻ੶ɾࡶࢽ 1.Ҫ্େี,പ୩େี,ਿࢁ޿௨,ాத৻࢘,௶಺༎थ,দ໦խ޾, Mackerel αʔό؂ࢹʦ࣮ફʧೖ໳, ٕज़ධ࿦ࣾ, 2017೥8 ݄26೔ 2.௶಺༎थ,

    MackerelͰ͸͡ΊΔαʔό؅ཧ ୈ17ճ ϩʔϧฤ੒ͷߟ͑ํ, Software Design 2016೥7݄߸, ٕज़ධ࿦ࣾ, 2016೥6݄18೔ 3.௶಺༎थ, MackerelͰ͸͡ΊΔαʔό؅ཧ ୈ13ճ MackerelͱServerspecΛ૊Έ߹ΘͤͨΠϯϑϥςετ, Software Design 2016೥3݄߸, ٕज़ධ࿦ࣾ, 2016೥2݄18೔ 4.௶಺༎थ, MackerelͰ͸͡ΊΔαʔό؅ཧ ୈ9ճ MackerelͷΞʔΩςΫνϟΛ஌Δ, Software Design 2015೥11݄߸, ٕज़ධ࿦ࣾ, 2015೥10݄17೔ 5.௶಺༎थ, Perl Hackers Hub ୈ34ճ DockerʹΑΔPerlͷWebΞϓϦέʔγϣϯ։ൃ, WEB+DB PRESS Vol.88, ٕज़ ධ࿦ࣾ, 2015೥8݄24೔ 6.௶಺༎थ, MackerelͰ͸͡ΊΔαʔό؅ཧ ୈ6ճ Mackerelपลͷӡ༻πʔϧͱAWS࿈ܞϊ΢ϋ΢, Software Design 2015೥8݄߸, ٕज़ධ࿦ࣾ, 2015೥7݄18೔ 7.௶಺༎थ, MackerelͰ͸͡ΊΔαʔό؅ཧ ୈ3ճ ӡ༻͠ͳ͕ΒҭͯΔαʔό؂ࢹͷϧʔϧ, Software Design 2015೥5 ݄߸, ٕज़ධ࿦ࣾ, 2015೥4݄18೔
  5. HeteroTSDB: An Extensible Time Series Database for Automatically Tiering on

    Heterogeneous Key-Value Storesa HeteroTSDB: ҟछࠞ߹ΩʔόϦϡʔετΞ Λ༻͍ͨࣗಈ֊૚ԽͷͨΊͷ ࣌ܥྻσʔλϕʔεΞʔΩςΫνϟ
  6. 15 ຊݚڀͷഎܠͷ֓؍ ࣾձͷഎܠ ΠϯλʔωοταʔϏεͷ৴པੑΛৗʹܭଌ͢Δͷ͕౰ͨΓલʹ ࣾձͷ ཁٻᶃ ࣌ܥྻσʔλΛߴղ૾౓ʹऔಘ͠ ௕ظอଘ͍ͨ͠ ࣾձͷ ཁٻᶄ

    ࣌ܥྻσʔλΛάϥϑҎ֎ͷ ෳ਺ͷҟͳΔ༻్Ͱࢀর͍ͨ͠ طଘͷղܾ • ࣌ܥྻσʔλͷѹॖ (ࠩ෼ූ߸Խ) • ϝϞϦʹॻ͖ࠐΈɺσΟεΫ΁·ͱ ΊҠಈͤͯ͞ॻ͖ࠐΈޮ཰޲্ ಺෦ߏ଄͕ີ݁߹ͳͨΊɺ σʔλߏ଄Λ௥Ճ͢Δ͜ͱ͕೉͍͠ ߴղ૾౓ => I/Oճ਺͕େ͖͍ ௕ظอଘ => σΟεΫ࢖༻͕େ͖͍ ༻్͝ͱʹσʔλࢀরύλʔϯ͕ҟͳΔͨ ҟͳΔσʔλߏ଄͕ඞཁ ੑೳ ՝୊ ֦ு՝୊ ղܾ͞Ε͍ͯͳ͍՝୊
  7. 16 ຊݚڀͷ໨తͱఏҊͷ֓؍ ݚڀ໨త ॻ͖ࠐΈޮ཰ͱσʔλอଘޮ཰Λ௿Լͤͣ͞ʹ σʔλߏ଄Λ֦ுՄೳͳ࣌ܥྻσʔλϕʔεͷఏҊ ֦ு՝୊ͷղܾ 1ͭͷ༻్ʹ͖ͭɺ1ͭͷDBMSΛ௥Ճ σʔλߏ଄Λ௥Ճ͠΍͍͢Α͏ʹ σʔλ(·ͨ͸ͦͷҰ෦)Λෳ੡ͯ͠ҟͳ ΔDBMSʹॻ͖ࠐΊΔΑ͏ʹૄ݁߹Խ

    ੑೳ՝୊ͷղܾ ҟछࠞ߹DBMSͷ૊Έ߹Θͤ (ΠϯϝϞϦDBMSͰॻ͖ࠐΈ ΦϯσΟεΫDBMS΁·ͱΊͯҠಈ) ఏҊͷৄࡉ • DBMSؒͷҰ؏ੑΛอͭͨΊͷɹ ႈ౳ੑΛ΋ͭσʔλߏ଄ • ࣌ܥྻσʔλͷҠಈख๏ • σʔλߏ଄ͷ௥Ճख๏
  8. ఏҊγεςϜͷॲཧϑϩʔ 19 Message Broker (1) write Client Metric Writer Metric

    Reader In-Memory DBMS On—Disk DBMS (2) subscribe and write (3) migration (i) query (ii) read from each dbms (iii) merge datapoints (ii)
  9. 20 0 1 2 3 4 5 0 20 40

    60 80 100 120 datapoint writes / min (mega) minutes In-Memory KVS On-Disk KVS ΠϯϝϞϦKVS΁ͷ෼ؒॻ͖ࠐΈճ਺͸ ໿4MͰҰఆ ΦϯσΟεΫKVS΁෼ؒॻ͖ࠐΈճ਺͸ 70k͔Β170kͷؒΛਪҠ ΦϯσΟεΫKVS΁ͷ ෼ؒॻ͖ࠐΈճ਺Λ ໿1/20ʹ࡟ݮͨ͜͠ͱ͕Θ͔Δ ॻ͖ࠐΈεϧʔϓοτͷ࣌ؒมԽ
  10. 21 0 10 20 30 40 50 60 70 80

    90 100 0 20 40 60 80 100 120 0 2 4 6 8 10 12 14 16 CPU usage (%) Free memory size (GB) minutes master CPU usage (%) slave1 CPU usage (%) slave2 CPU usage (%) Free memory size (GB) 50෼Λ௒͑ͨͱ͜ΖͰ ۭ͖ϝϞϦ࢖༻ྔ͕10.5GBͰҰఆʹͳͬ ͍ͯΔͨΊσʔλҠಈͰ͖͍ͯΔͱ͍͑Δ CPUར༻཰ͱϝϞϦ࢖༻ྔ
  11. αʔό؂ࢹαʔϏεͷ࣮؀ڥ΁ͷద༻ • 2017೥7݄͔Β2018೥8݄·Ͱͷ1೥ؒͷՔಇ࣮੷ • ಉظؒͷো֐݅਺2݅ɺނোճ਺2݅ • ো֐1: ಛఆͷΠϯϝϞϦKVSͷϊʔυʹॻ͖ࠐΈෛՙ͕ूத͠ɺϝϞ Ϧ্ݶʹୡ͠ɺOSʹڧ੍ఀࢭ͞Εɺσʔλফࣦൃੜ •

    ϝοηʔδϒϩʔΧʔ্ͷσʔλΛ࠶ॲཧ͠σʔλ෮چ • ো֐2: ಉҰͷϝτϦοΫ໊ͱλΠϜελϯϓΛ΋ͭσʔλ఺͕୹࣌ؒ ʹେྔʹॻ͖ࠐ·ΕɺΠϯϝϞϦKVSͷॻ͖ࠐΈαΠζ্ݶʹୡͨ͠ • ΠϯϝϞϦKVSʹॻ͖ࠐΉલʹॏෳΛഉআ͢Δ͜ͱͰղܾ 22
  12. Proxy͕Ωϟογϡͷಉظͱ ΫΤϦͷϑΥϫʔσΟϯά Small Datacenter DBCache Proxy 32 DBΫΤϦΩϟογϡΞʔΩςΫνϟ DB Cloud

    Small Datacenter DBCache Proxy App Web Read/Write Read/Write App Web Ωϟογϡڞ༗
  13. Ұ࣌తͳԠ౴଎౓ͷ ௿Լ͸ڐ༰ DBCache Proxy 33 దԠతΫϥελ੍ޚΞʔΩςΫνϟ DB Cloud DBCache Proxy

    App Web Read/Write Read/Write App Web App Web (1) ෆௐͳΤοδΛݕ஌ DB Manager (2) ෆௐͳΤοδͷΫΤϦΛ ࢭΊΔΑ͏ʹ఻ୡ (3) όοΫάϥϯυͰΩϟογϡΛഇغ ͠ɺۙ๣·ͨ͸Ϋϥ΢υ͔Βಉظ ෆௐͳSmall Datacenter ʹҾ͖ͮΒΕͳ͍Α͏ʹ Small Datacenter Small Datacenter