͘͞ΒΠϯλʔωοτגࣜձࣾ (C) Copyright 1996-2020 SAKURA Internet Inc ͘͞ΒΠϯλʔωοτݚڀॴ Rapid Container Scheduling for Reactive Relocation of Individual HTTP Requests 2020/09/03 ্ڃݚڀһ দຊ ྄հ FIT2020 τοϓΧϯϑΝϨϯεηογϣϯ

• COMPSAC: IEEE Computer Society Flagship International Conference • COMPSAC 2020 Message from the 2020 Program Chairs-in-Chief ※1 • over 450 submissions this year, to both our conference tracks and associated workshops • accepted 69 regular papers and 69 short papers • 76 papers that were not accepted for the main conference were referred to COMPSAC workshops • An additional 146 papers were submitted directly to our associated workshops • ͜ΕΒΛಡΉݶΓRegular Paperͷ࠾୒཰͸ 69 / (450 - 146) ͷ23%ҎԼ 2 COMPSAC 2020 Regular Paper ˞.FTTBHFGSPNUIF1SPHSBN$IBJSTJO$IJFG IUUQTJFFFDPNQTBDDPNQVUFSPSH

1. എܠͱ໨త 2. ؔ࿈ݚڀͷ՝୊ 3. ఏҊख๏ 4. ࣮ݧͱߟ࡯ 5. ·ͱΊͱaccept·Ͱͷաఔ 3 ໨࣍

1. എܠͱ໨త

• ݸਓ͕౰ͨΓલʹଟछଟ༷ͳWebαΠτΛ࣋ͭ࣌୅ • Ϋϥ΢υɾVPSͷΑ͏ͳࣗ༝౓ͱִ཭؀ڥʢΠϯελϯεʣʹର͢Δཁٻ • SNSΛհͯ͠ݸਓͷίϯςϯπΛ֦ࢄ͠΍͍࣌͢୅ • ݸਓͷWebαΠτ΁ͷΞΫηεूத͢Δػձͷ૿େ • ݸਓαΠτͰ΋ΞΫηεूத΍ো֐ͱ͍ͬͨมԽʹڧ͍ج൫͕ඞཁ • ༧ଌͰ͖ͳ͍ΞΫηε܏޲ͱϦιʔεׂ౰ΛϦΞΫςΟϒʹߦ͍͍ͨ • ଟछଟ༷ͳWebΞϓϦʹͰ͖Δ͚ͩରԠͯ͠બ୒ࢶΛఏڙ͍ͨ͠ 5 ݸਓͷWebαΠτ΁ͷΞΫηεूத΍৴པੑ

1. Πϯελϯε্ͰWordPressͷΑ͏ͳҰൠత͔ͭଟ༷ͳWebΞϓϦ͕ಈ࡞Մೳ • ઐ໳తͳ஌͕ࣝͳͯ͘΋ར༻Ͱ͖Δ҆ՁͳαʔϏεΛ࣮ݱ͍ͨ͠ 2. Πϯελϯεͷঢ়ଶมߋॲཧ͕ߴ଎ • Πϯελϯε(ίϯςφ)ͷঢ়ଶͷఀࢭɾىಈɾεέʔϦϯάΛߴ଎ʹ॥؀ • ϦΫΤετ୯ҐͰϦΞΫςΟϒʹঢ়ଶΛܾఆ → มԽʹڧ͍ج൫΁ 3. ϋʔυ΢ΣΞϦιʔεͷར༻ޮ཰Λ޲্ • ϦΫΤετ͕ແ͍Πϯελϯε͸Ұఆظؒىಈޙʹఀࢭ ΠϯελϯεΛߴूੵʹऩ༰ՄೳͰมԽʹڧ͍Ծ૝Խج൫FastContainer 6 ߃ৗੑͷ͋ΔมԽʹڧ͍ج൫ͷؔ࿈ݚڀ※1 ˞3ZPTVLF.BUTVNPUP 6DIJP,POEP ,FOUBSP,VSJCBZBTIJ 'BTU$POUBJOFS")PNFPTUBUJD4ZTUFN"SDIJUFDUVSF)JHITQFFE"EBQUJOH&YFDVUJPO &OWJSPONFOU$IBOHFT 5IFSE"OOVBM*&&&*OUFSOBUJPOBM$PNQVUFST 4PGUXBSF BOE"QQMJDBUJPOT$POGFSFODF $0.14"$ +VMZ

• Մ༻ੑ୲อͷͨΊʹෳ਺ΠϯελϯεՔಇͤ͞Δ͜ͱʹΑΔίετͷ૿େ • ෳ਺ͷऩ༰αʔόʹΠϯελϯεΛͦΕͧΕՔಇͤ͞Δ͜ͱͰՄ༻ੑΛ୲อ • ߴूੵʹΠϯελϯεऩ༰͢Δ؍఺͔ΒͰ͖Δ͚ͩϦιʔεΛઅ໿͍ͨ͠ • ར༻ऀ໨ઢͰ΋Մ༻ੑΛ୲อͭͭ͠අ༻Λ࡟ݮ͍ͨ͠ • ґવͱͯ͠ɺHTTPͷϨεϙϯελΠϜͷ؍఺͔ΒɺFastContainerͷHTTPϦ ΫΤετܖػͰঢ়ଶΛมߋ͢Δ࣌ؒͷ୹ॖ΋՝୊ • ίϯςφࣗମ͸଎͘ىಈͯ͠΋தͰಈ͘αʔόϓϩηεͷىಈ͕஗͍ 7 FastContainer͓Αͼؔ࿈ݚڀͷՄ༻ੑͷ՝୊

1. Πϯελϯε্ͰWordPressͷΑ͏ͳҰൠతͳWebΞϓϦ͕ಈ࡞Մೳ 2. ୯ҰΠϯελϯεͰ΋ऩ༰αʔόো֐࣌ʹ͸ผαʔό΁ࣗಈతʹ࠶഑ஔՄೳ 3. Πϯελϯεͷ࠶഑ஔͷ࣮ߦ࣌Ͱ͋ͬͯ΋਺ඵͷ஗ԆͰHTTPλΠϜΞ΢τ͢ Δ͜ͱͳ͘ΦϯϥΠϯͰϨεϙϯεΛૹ৴Մೳ • iPhoneͰ4GճઢΛܦ༝͢Δͱਓ͕ؒؾ͔ͮͳ͍Α͏ͳ஗Ԇ ΠϯελϯεΛߴ଎ʹ࠶഑ஔՄೳʹ͢Δ͜ͱͰूੵ཰Λ޲্ͤ͞ ௿ίετͳج൫Λ࣮ݱ͢ΔεέδϡʔϦϯάख๏ͷఏҊ 8 ݚڀͷ໨త: ϦΫΤετ୯Ґ ͰͷΠϯελϯε࠶഑ஔ

2. ؔ࿈ݚڀͷ՝୊

• FastContainer ※1͸HTTPϦΫΤετʹԠͯ͡൓Ԡత͔ͭߴ଎ʹΠϯελϯε ͷঢ়ଶʢىಈɺఀࢭɺҠಈɺෳ੡ɺϦιʔε૿ݮ౳ʣΛܾఆ • αʔϏεར༻ऀ͸Wordpressͱ͔WebΞϓϦΛී௨ʹ࢖͏Α͏ͳ࢖͍ํ • ΞΫηε਺ʹԠͨ͡ϦΞΫςΟϒͳεέʔϦϯάॲཧ͕Մೳ • Ϋϥ΢υαʔϏεج൫͸༧ΊΠϯελϯεΛىಈͤͯ͞ϦΫΤετΛॲཧ • ΞΫηεूத࣌͸༧ଌత͔ͭϓϩΞΫςΟϒͳεέʔϦϯάॲཧ͕ඞཁ 10 FastContainerͱΫϥ΢υαʔϏεج൫ͷಛ௃ ˞3ZPTVLF.BUTVNPUP 6DIJP,POEP ,FOUBSP,VSJCBZBTIJ 'BTU$POUBJOFS")PNFPTUBUJD4ZTUFN"SDIJUFDUVSF)JHITQFFE"EBQUJOH&YFDVUJPO &OWJSPONFOU$IBOHFT 5IFSE"OOVBM*&&&*OUFSOBUJPOBM$PNQVUFST 4PGUXBSF BOE"QQMJDBUJPOT$POGFSFODF $0.14"$ +VMZ

1. WordPressͷΑ͏ͳҰൠతͳWebΞϓϦέʔγϣϯΛར༻Մೳ 2. Πϯελϯε΍ίϯςφͷऩ༰αʔόͷো֐࣌ʹHTTPλΠϜΞ΢τ͕ੜ͡ͳ ͍ϨϕϧͰαʔϏεΛܧଓͰ͖Δఔ౓ͷՄ༻ੑΛ૝ఆ 11 ຊݚڀʹ͓͚ΔԾ૝Խج൫ͱՄ༻ੑͷલఏ

• ༷ʑͳWebΞϓϦέʔγϣϯ͕ར༻Մೳ • IaaS΍PaaSΛར༻ͨ͠Πϯελϯε୯ҐͰͷߏங͓ΑͼՄ༻ੑ୲อ͕Ұൠత • ຊݚڀͷՄ༻ੑ͕લఏͷ৔߹ɺෳ਺ऩ༰αʔόʹͦΕͧΕΠϯελϯεΛϗο τελϯόΠํࣜʢىಈࡁΈͷ଴ػΠϯελϯεʣͰ଴ػ͢Δ͜ͱͰ࣮ݱ • ऩ༰αʔόఀࢭ࣌ʹ΋ଈ࣌αʔϏεΛܧଓ͢ΔͨΊ • ෳ਺Πϯελϯεͷىಈ͕લఏͱͳΓϦιʔε઎༗ͷίετ͕૿େ • ϦΞΫςΟϒʹՄ༻ੑΛ୲อ͢Δʹ͸ϨεϙϯελΠϜ΁ͷӨڹ͕େ͖͍ 12 FastContainer΍Ϋϥ΢υج൫ͷՄ༻ੑ

4UPSBHF $MJFOU 4FSWFS JOTUBODF" JOTUBODF# JOTUBODF$ 4FSWFS JOTUBODF" 'BTU$POUBJOFS΍Ϋϥ΢υج൫ͷՄ༻ੑ )551ϦΫΤετ 4UPSBHF $MJFOU 4FSWFS JOTUBODF" JOTUBODF# JOTUBODF$ 4FSWFS JOTUBODF" )551ϦΫΤετ ✗ 13 αʔόো֐

3. ఏҊख๏

1. Πϯελϯε্ͰWordPressͷΑ͏ͳҰൠతͳWebΞϓϦ͕ಈ࡞Մೳ 2. ୯ҰΠϯελϯεͰ΋ऩ༰αʔόো֐࣌ʹ͸ผαʔό΁ࣗಈతʹ࠶഑ஔՄೳ 3. Πϯελϯεͷ࠶഑ஔͷ࣮ߦ࣌Ͱ͋ͬͯ΋਺ඵͷ஗ԆͰHTTPλΠϜΞ΢τ͢ Δ͜ͱͳ͘ΦϯϥΠϯͰϨεϙϯεΛૹ৴Մೳ 15 ఏҊख๏: ϦΫΤετ୯Ґ ͰͷΠϯελϯε࠶഑ஔ

16 4UPSBHF $MJFOU 4FSWFS JOTUBODF" JOTUBODF# JOTUBODF$ 4FSWFS ఏҊख๏ʴ'BTU$POUBJOFSͷՄ༻ੑ )551ϦΫΤετ 4UPSBHF $MJFOU 4FSWFS JOTUBODF" JOTUBODF# JOTUBODF$ 4FSWFS )551ϦΫΤετ JOTUBODF" ✗൓Ԡతʹ ࠶഑ஔ αʔόো֐

HTTP FastContainerͷجຊϑϩʔ 17 8FC1SPYZ ʢOHY@NSVCZ $.%# ʴ "1* 8FC%JTQBUDIFS OHY@NSVCZ $MJFOU ίϯςφ ίϯςφ ίϯςφ w )551ϦΫΤετͷ)PTUOBNF ΛΩʔʹɺ$.%# ߏ੒؅ཧ%# ͔Βίϯςφͷ৘ใΛऔಘ )551 4 ϦΫΤετ w ίϯςφͷ*1ͱϙʔτʹج͍ ͯίϯςφʹϓϩΩγ w ίϯςφ͕-JTUFO͍ͯ͠ͳ͍ ৔߹͸$.%#͔Βίϯςφ ৘ใΛಘͯىಈ $POUBJOFS&OHJOF IBDPOJXB ऩ༰ϗετ"

1. Proxy͔Βऩ༰αʔόʹICMP/TCPͰ࠷௿ݶͷύέοτͰԠ౴଎౓Λଌఆ 2. Ԡ౴଎౓͕ᮢ஋Λ௒͍͑ͯͨΒผͷऩ༰αʔό΁࠶഑ஔ 3. ίϯςφىಈ࣌͸ɺىಈ׬ྃ௚લͷঢ়ଶͷϓϩηεΠϝʔδ͔Β෮ݩ → ඇৗʹγϯϓϧͳํࣜͰߴ଎ͳ࠶഑ஔΛ࣮ݱՄೳ → ୯ҰͷίϯςφͰ࣮༻తͳՄ༻ੑΛ୲อՄೳʢϦιʔείετͷ࡟ݮʣ 18 ߴ଎ͳऩ༰ϗετͷࢮ׆؂ࢹͱ࠶഑ஔ

)PTU04 8FC1SPYZ $.%#"1* $POUBJOFS %JTQBUDIFS $POUBJOFS )PTU04 $POUBJOFS %JTQBUDIFS $POUBJOFS $MJFOU )551 *$.1 )551 )551 )551 *$.1PS5$1

)PTU04 8FC1SPYZ $.%#"1* $POUBJOFS %JTQBUDIFS $POUBJOFS )PTU04 $POUBJOFS %JTQBUDIFS $POUBJOFS $MJFOU )551 *$.1PS5$1 *$.1PS5$1 )551 )551 )551 ✗ ࠷ॳͷ࠶഑ஔ࣌͸ίϯςφͷىಈ͕ඞཁͰ͋Δ͕ɺ ىಈޙ͸Ұఆظؒىಈ͠ଓ͚Δɻ

• ICMP/TCPͰᮢ஋νΣοΫ͕Ұ࣌తʹޡݕ஌ͯ͠΋Өڹ͕গͳ͍ • TCPͷ৔߹͸ࣗ࡞TCPελοΫͰԟ෮3ύέοτͰνΣοΫ[3][4] • FastContainerͳͷͰޡݕ஌ͷ࠶഑ஔ͕ੜͯ͡΋αʔϏε͕ܧଓ͞ΕΔ • ޡݕ஌Ͱଞαʔόʹىಈͯ͠͠·ͬͯ΋Ұఆ࣌ؒىಈͨ͠Βఀࢭ͢Δ • ݩαʔόʹ࠶഑ஔ͞ΕͯCMDB্͸ݩαʔόͷΈʹϦΫΤετ͕ྲྀΕΔ • Ԡ౴࣌ؒͷᮢ஋΍λΠϜΞ΢τΛΪϦΪϦ·ͰνϡʔχϯάՄೳ 21 ఏҊख๏ͷϙΠϯτʢICMP/TCP؂ࢹʣ <>NBUTVNPUPSZ NSVCZGBTUSFNPUFDIFDL IUUQTHJUIVCDPNNBUTVNPUPSZNSVCZGBTUSFNPUFDIFDL <>-JOVYΧʔωϧͷ5$1ελοΫͱγεςϜίʔϧͷ૊Έ߹ΘͤʹΑΔख๏ΑΓ΋ߴ଎ʹϙʔτͷ-JTUFOνΣοΫΛ ߦ͏ IUUQTICNBUTVNPUPSKQFOUSZ

• ίϯςφ಺ͷWebαʔόϓϩηεΛىಈ׬ྃ௚લͰΠϝʔδԽ(Checkpoint) • ఆظతʹඇಉظͰϓϩηεͷىಈ׬ྃ௚લΠϝʔδΛ࡞੒͓ͯ͘͠ • ϦΫΤετड৴࣌ʹΠϝʔδΛϓϩηεʹ෮ݩ(Restore) • αʔόϓϩηεͷॳظԽॲཧΛεΩοϓ • ىಈʹ࣌ؒͷ͔͔ΔΞϓϦέʔγϣϯαʔό౳ʹ༗ར • Ruby on RailsɼDjangoͳͲ 22 ఏҊख๏ͷϙΠϯτʢCheckpoint/Restoreʣ

• αʔόϓϩηεͷىಈ௚ޙΛίϯςφϥϯλΠϜͰϑοΫͯ͠Checkpoint • ࢀߟ: seccompͰγεςϜίʔϧΛ؂ࢹ͠ptraceͰҰ࣌ఀࢭ͔ͯ͠ΒCRIUͰ CheckpointʹΑΔΠϝʔδԽͱ͍͏ํ๏΋͋Δ • CRIUͷதͰseccompΛ࢖͓ͬͯΓύον͕ඞཁͰ൚༻ੑʹ͔͚Δ • ϦΫΤετΛड͚ͯίϯςφΛىಈ͢Δ࣌͸Πϝʔδ͔ΒRestoreͯ͠ىಈ 23 Checkpoint/RestoreʹΑΔFastContainerͷىಈ

αʔόϓϩηεͷCheckpoint/Restoreͷ࣮૷ 24 SFGl04ϨΠϠͰ8FCαʔό͕ىಈ࣌ʹ࣮ߦ͢ΔγεςϜίʔϧΛ؂ࢹ͠ىಈ׬ྃ௚લͷϓϩηεΛΠϝʔδԽ͢ΔlIUUQ ICNBUTVNPUPSKQFOUSZ

4. ࣮ݧͱߟ࡯

FastContainerͷγεςϜߏ੒ 26

27

• ༧උ࣮ݧ: CRIUͱCheckpoint/Restore͢ΔϓϩηεͷϝϞϦαΠζͱͷؔ܎ • ୅දతͳΞϓϦέʔγϣϯΛ࢖ͬͨίϯςφ࠶഑ஔ࣌ͷϨεϙϯελΠϜ • Apache 2.4.18ɼPHP 7.3.0ɼWordpress 5.0.3ʢσϑΥϧτϖʔδʣ • Python 3.7.1ɼDjango 2.1.4ɼgunicorn 19.9.0※1 • Ruby 2.5.1ɼRails 5.2.1ɼPuma 3.12.0※2 28 ࣮ݧ಺༰ ˞IUUQTNDMPMJQPQ[FOEFTLDPNIDKBBSUJDMFT ˞IUUQTHJUIVCDPNFWFSZMFBGFMUSBJOJO ݱ࣮తͳن໛ʢݸਓάϧʔϓ಺Ͱͷར༻ͷΞϓϦέʔγϣϯఔ౓ʣͰ%#Λར༻ͨ͠΋ͷΛ࠾

• ComputeͰWebαʔόͷCheckpoint/Restoreͷ଎౓Λܭଌ • mruby-simplehttpserver※1ͰWebαʔόΛىಈͤ͞setsockopt()Λ؂ࢹ • setsockopt()࣮ߦલʹCheckpoint • setsockopt()࣮ߦલʹϝϞϦΛ֬อͯ͠ɺϝϞϦαΠζʹԠͯ͡ Checkpoint/Restoreͷ଎౓ͷมԽΛܭଌ 29 ༧උ࣮ݧɿϓϩηεͷΠϝʔδԽͷ࣮ݧ ˞NBUTVNPUPSZNSVCZTJNQMFIUUQTFSWFS IUUQTHJUIVCDPNNBUTVNPUPSZNSVCZTJNQMFIUUQTFSWFS

αʔόϓϩηεͷΠϝʔδԽ(Checkpoint/Restore) 30 $IFDLQPJOU3FTUPSF1SPDFTTJOH5JNFEVFUP.FNPSZ6TBHF 1SPDFTTJOHUJNF .FNPSZVTBHFQFSQSPDFTT<.#> $IFDLQPJOU 3FTUPSF ୯ҰͷαʔόϓϩηεͷϝϞϦ࢖༻ྔʹԠͨ͡$IFDLQPJOU3FTUPSFʹඞཁ

• ComputeͰApache httpdͷϓϩηε਺ΛมԽ • HTTPϦΫΤετΛܖػʹApache httpdΛىಈͤͯ͞ϨεϙϯεΛฦ͢ • ਺ेόΠτͷ੩తͳindex.htmlʹର͢ΔϦΫΤετ • CRIUΛ࢖͏৔߹ • CRIUΛ࢖Θͳ͍৔߹ 31 ༧උ࣮ݧ2ɿϓϩηε਺ͱCRIUͷؔ܎

Apacheͷworker਺ͱCRIUͷؔ܎ 32 )PUTUBSU͸શͯͷ8PSLFSϓϩηε ͷىಈ׬ྃΛ଴ͨͣʹɼͭͰ΋ XPSLFSϓϩηε͕ىಈ͢Ε͹Ϩεϙ ϯεΛฦ͢͜ͱ͕Ͱ͖ΔͨΊҰఆɽ $3*6͔Βͷىಈ͸8PSLFSϓϩηε ΛશͯΠϝʔδ͔͢ΔͨΊɼશ͕ͯ 3FTUPSF͞Ε͔ͯΒϨεϙϯεΛฦ͢ ͨΊ୯ௐ૿Ճɽ

• Apache 2.4.18ɼPHP 7.3.0ɼWordpress 5.0.3 • ϓϩηε਺͸3ɼ୯ҰͷϓϩηεͷϝϞϦαΠζ(RSS)͸35MBytes • Python 3.7.1ɼDjango 2.1.4ɼgunicorn 19.9.0 ※1 • ϓϩηε਺2ɼεϨου਺2ɼ୯ҰͷϓϩηεͷRSS͸33MBytes • Ruby 2.5.1ɼRails 5.2.1ɼPuma 3.12.0 ※2 • ϓϩηε਺2ɼεϨου਺14ɼ୯ҰͷϓϩηεͷRSS͸89MBytes • gemΛࣄલίϯύΠϧ͓ͯ͘͠bootsnapͱ΋ൺֱ 33 ίϯςφ࠶഑ஔ࣌ͷϨεϙϯελΠϜ

WordPress on Apache httpd 34 BCίϚϯυͰಉ࣌઀ଓ਺ͷϕϯνϚʔΫΛ͔͚ͳ͕Β ऩ༰ϗετΛJQBUBCMFTͰԾ૝తʹμ΢ϯͤͯ͞ɼผͷऩ༰αʔόʹ࠶഑ஔΛڧ੍తʹൃੜͤͨ͞

Django 35 IUUQTNDMPMJQPQ[FOEFTLDPNIDKBBSUJDMFT ݱ࣮తͳن໛ʢݸਓάϧʔϓ಺Ͱͷར༻ͷΞϓϦέʔγϣϯఔ౓ʣͰ%#Λར༻ͨ͠΋ͷΛ࠾༻

Ruby on Rails 36 IUUQTHJUIVCDPNFWFSZMFBGFMUSBJOJO ݱ࣮తͳن໛ʢݸਓάϧʔϓ಺Ͱͷར༻ͷΞϓϦέʔγϣϯఔ౓ʣͰ%#Λར༻ͨ͠΋ͷΛ࠾༻

5. ·ͱΊ

• ୯ҰΠϯελϯεͰՄ༻ੑΛ୲อ͢Δߴ଎ͳεέδϡʔϦϯάख๏ΛఏҊ • ෳ਺ΠϯελϯεΛඞཁͱ͠ͳ͍ͨΊϦιʔείετ͕௿͍ • ࣮ݧ͔Βݱ࣌఺Ͱ΋࣮༻ՄೳͳϨϕϧͷ࠶഑ஔͷੑೳ͕ಘΒΕͨ • ϓϩμΫγϣϯ؀ڥͰԠ༻ • ϗετো֐࣌Ͱ͋ͬͯ΋Ϣʔβ͕ؾ͔ͮͳ͍ϨϕϧͰͷՄ༻ੑ • ΦʔτεέʔϦϯά࣌ʹ΋γʔϜϨεʹίϯςφΛ૿΍ͯ͠ෛՙରࡦՄೳʹ • ΞΫηε܏޲ͱϦιʔεׂΓ౰͕ͯਖ਼֬ʹ௥ਵՄೳʹ • εέʔϦϯά΍ϋʔυ΢ΣΞϓʔϧͷϦιʔεׂΓ౰ͯ΋࠷దԽ 38 ·ͱΊ

• ࠷ॳͷWWW2020ʹఏग़ͯ͠Reject͞Εͨཧ༝ • ݚڀͷཱͪҐஔ͕ෆ໌֬ɺ৽نੑ͕͍·͍ͪΑ͘Θ͔Βͳ͍ • ຊݚڀͷཱͪҐஔ΍લఏͷ໌֬Խ • ൺֱ͢΂͖ؔ࿈ݚڀ͕ෆ໌ྎ • ຊݚڀͱൺֱ͢΂͖ؔ࿈ݚڀΛॆ࣮ͤͯࠩ͞෼Λ໌֬Խ ڭ܇: ΠϯλʔωοτɾWebٕज़෼໺Ͱ͸ൃද࿦จ΍OSSͷ਺΍ٕज़ͷมԽ଎౓ ͕ඇৗʹ଎͍ͨΊɺݚڀͷείʔϓͱ࠷৽ͷ՝୊Λ໌֬ʹ্ͨ͠Ͱࠩ෼Λ͔ͬ͠ Γͱࣔ͠ɺͦͷ՝୊͕ݱ࣮తʹͲΕ΄Ͳҙ͕ٛ͋Δ͜ͱͳͷ͔Λࣔ͢͜ͱ͕େࣄ 39 Accept·Ͱͷաఔ