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rm-rf-slant
October 21, 2017
Technology
10
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The story behind AbemaTV
On technologies and load countermeasures supporting large-scale traffic.
rm-rf-slant
October 21, 2017
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Transcript
CyberAgent, Inc. All Rights Reserved. "CFNB57ͷཪଆ େنτϥϑΟοΫΛࢧ͑Δٕज़ͱෛՙରࡦͷ "CFNB57%&7&-01&3$0/'&3&/$& IBTIUBHBCFNBUW@EFW %BUF0DUPCFSUI
1SFTFOUFS4IPOPTVLF0LBEB
"HFOEB
Null Agenda 00 w*OUSPEVDUJPO w"CPVUMPBEUFTU w#JIJOEUIFTDFOFTTUPSZ w$PODMVTJPO
*OUSPEVDUJPO
4FMG *OUSPEVDUJPO w /BNF 4IPOPTVLF0LBEBɹ!SNSGTMBOU w %FQBSUNFOU ٕज़ຊ෦4FSWJDF3FMJBCJMJUZ(SPVQ 43(
w 8PSLFYQFSJFODF "QSJMr/PWFNCFS "NFCBCMPH 0XOE $3044.&FUD %FDFNCFSr1SFTFOU "CFNB57
01 "SDIJUFDUVSF
"SDIJUFDUVSF *OUSPEVDUJPO
"SDIJUFDUVSF *OUSPEVDUJPO େա͗ͯͰແཧ ˞ը૾͋͘·ͰΠϝʔδͰ͢
"SDIJUFDUVSF *OUSPEVDUJPO w "CFNB57%&7&-01&3$0/'&3&/$& !TUSTL IUUQTTQFBLFSEFDLDPNTUSTLHLFBUBCFNBUW
"SDIJUFDUVSF *OUSPEVDUJPO w (PPHMF$MPVE/FYU`JO5PLZP !FEJUOVLJ IUUQTXXXZPVUVCFDPNXBUDI WRBI2Z%'RL
)JSJOH *OUSPEVDUJPO IUUQTBCFNBHO[SBT 8PSLBU"CFNB57
"CPVUMPBEUFTU
0WFSWJFX "CPVUMPBEUFTU 0DUPCFS1SFTFOU
0WFSWJFX "CPVUMPBEUFTU October 2016 - Present
October 2016 - Present 0WFSWJFX "CPVUMPBEUFTU
October 2016 - Present 0WFSWJFX "CPVUMPBEUFTU
October 2016 - Present 0WFSWJFX "CPVUMPBEUFTU
October 2016 - Present 0WFSWJFX "CPVUMPBEUFTU
October 2016 - Present ͍ͭ͘ͷώοτاը൪͕ੜ 0WFSWJFX "CPVUMPBEUFTU
October 2016 - Present ͍ͭ͘ͷώοτاը൪͕ੜ ͍ͭ͘ͷཱ͔ͪͩΔࢼ࿅ ന 0WFSWJFX "CPVUMPBEUFTU
ෛՙࢼݧ 0WFSWJFX "CPVUMPBEUFTU
"CFNB57Ͱ͜͏͍ͯ͠·͢ 0WFSWJFX "CPVUMPBEUFTU
0WFSWJFX "CPVUMPBEUFTU -PDVTU XSL
01 -PDVTU
-PDVTU "CPVUMPBEUFTU w 1ZUIPOͷࢄܕϢʔβʔෛՙςετπʔϧ w HFWFOUΛ༻ͨ͠શͳΠϕϯτϕʔεػߏ HFWFOUࣗମίϧʔνϯϕʔεͰෳͷUBTL Λ͜ͳ͢ඇಉظ*0ϥΠϒϥϦ (SFFOMFUͱ͍͏ܰྔܕͷίϧʔνϯ͕࣮ମ
04ϓϩηεͰ࣮ߦ͞ΕΔ͕ɺڠௐతʹ εέδϡʔϦϯά͞ΕΔ !0WFSWJFX
-PDVTU "CPVUMPBEUFTU w *0ͪʹͳͬͨΒPO@FWFOU͕ൃՐ͠ɺผͷλεΫʢγφϦ Φʣ͕࣮ߦ͞ΕΔ w ίΞΛेʹ͍͍ͨ߹ɺEFTUSJCVUFENPEFΛ༻ "CFNB57Ͱɺ(,&্ͰେྔͷEFTUSJCVUFE NPEFXPSLFSΛஔͯ͠γφϦΦϑΝΠϧΛ
ճ͠ɺIJHIUISPVHIQVUΛ࣮ݱ͍ͯ͠Δ !0WFSWJFX
-PDVTU "CPVUMPBEUFTU MPDVTUDMVTUFS HBUFXBZ w .BDIJOFUZQF OIJHIDQV W$16T
(#NFNPSZ w /PEF [POFOPEF DPSF w 1PE MPDVTUHBUFXBZXPSLFS MPDVTUHBUFXBZWJEFPXPSLFS !%FUBJM
-PDVTU "CPVUMPBEUFTU MPDVTUDMVTUFS NFEJBQSPYZ w .BDIJOFUZQF OIJHIDQV W$16T
(#NFNPSZ w /PEF [POFOPEF DPSF w 1PE MPDVTUNFEJBQSPYZXPSLFS MPDVTUNFEJBQSPYZEBTIXPSLFS !%FUBJM
-PDVTU "CPVUMPBEUFTU !%FUBJM 5PUBMDPSF
-PDVTU "CPVUMPBEUFTU w 8FC6*͔ΒϦΞϧλΠϜͰ֤QBUIͷSFRTFDɺ FYFQUJPOΛ؍ଌ͢Δ͜ͱ͕Մೳ w 4DBMFʹڧ͍ (,&º-PDVTUͷ૬ੑ͕ྑ͍ w
ᙱ͍ͱ͜Ζʹख͕ಧ͘ ໖ີͳγφϦΦՄ QVTIड͚औΓ࣌ɺ$.ೖΓɺWJEFPFUDʜ !1SPT
-PDVTU "CPVUMPBEUFTU w 8FC6*͔ΒϦΞϧλΠϜͰ֤QBUIͷSFRTFDɺ FYFQUJPOΛ؍ଌ͢Δ͜ͱ͕Մೳ w 4DBMFʹڧ͍ (,&º-PDVTUͷ૬ੑ͕ྑ͍ w
ᙱ͍ͱ͜Ζʹख͕ಧ͘ ໖ີͳγφϦΦՄ QVTIड͚औΓ࣌ɺ$.ೖΓɺWJEFPFUDʜ !1SPT
-PDVTU "CPVUMPBEUFTU !8FC6*
-PDVTU "CPVUMPBEUFTU w ࣗ༝͕ߴ͍ނɺൿͷλϨԽ͍͢͠ ݱঢ়ɺઌਓ͕ॻ͍ͨίʔυΛܧ͗ͨ͠Γ ͬͨΓ͠ͳ͕Β༻͍ͯ͠Δ ͦͷͨΊɺϦϑΝΫλϦϯάͷ༨େ͍ʹ ͋Δ ίΞ͍Βͳ͍આ
!$POT
-PDVTU "CPVUMPBEUFTU w ෛՙࢼݧڥͷTUBSUTUPQ࣮ߦɺϨϙʔτͷूܭ FWJEFODFऔಘFUD ·Ͱ$IBU0QTԽ γφϦΦ࡞ͷΈखಈ w CPPNFSΛ༻ͨ͠શγφϦΦͷSFQMBDF
1ZUIPOHPMBOH ཁݕূ IUUQTHJUIVCDPNNZ[IBOCPPNFS !'VUVSFXPSL
-PDVTU "CPVUMPBEUFTU ͭͷFOEQPJOUʹରͯ͠αΫοͱ ݶքੑೳࢼݧ͍ͨ࣌͠ɺ-PDVTU ϔϏʔա͗Δ
-PDVTU "CPVUMPBEUFTU ͦΜͳ࣌͜Ε
01 XSL
XSL "CPVUMPBEUFTU w -VBͰγφϦΦΛهड़Մೳͳ)551ϕϯνϚʔΫπʔϧ w ୯ҰͷϚϧνίΞ$16্Ͱ࣮ߦ͢ΔͱେنͳෛՙΛ ൃੜͤ͞Δ͜ͱՄೳ ϚϧνεϨουઃܭ FQPMMLRVFVFͳͲͷFWFOU௨γεςϜΛ
Έ߹Θ࣮ͤͯݱ !0WFSWJFX
XSL "CPVUMPBEUFTU XSLUDETIUUQJOEFYIUNM !#BTJD6TBHF
XSL "CPVUMPBEUFTU XSLUDETIUUQJOEFYIUNM !#BTJD6TBHF WFHFUB "QBDIF#FODI 4JFHF L ˢ͜ͷลΓͷπʔϧΛ৮ͬͨ͜ͱ͕͋Δํɺ͙͢खʹೃછΉ͔ʁ
XSL "CPVUMPBEUFTU w Ϩϙʔτग़ྗ෦ΛΧελϜͰ͖Δ ࣮࣍ୈͰ͖ͳͷΛղੳ͢Δ͜ͱ͕Մೳ w ͦͦ-VBͳͷͰɺߴͭύϫʔे w #JOBSZΛ༻ͨ͠SFRVFTUͪΖΜରԠ
w ͪΐͬͱͨ͠γφϦΦهड़Մೳ !1SPT
XSL "CPVUMPBEUFTU w Ϩϙʔτग़ྗ෦ΛΧελϜͰ͖Δ ࣮࣍ୈͰ͖ͳͷΛղੳ͢Δ͜ͱ͕Մೳ w ͦͦ-VBͳͷͰɺߴͭύϫʔे w #JOBSZΛ༻ͨ͠SFRVFTUͪΖΜରԠ
w ͪΐͬͱͨ͠γφϦΦهड़Մೳ !1SPT
XSL "CPVUMPBEUFTU w MBUFODZͷQFSDFOUJMFදࣔ w UISFBEͷৄࡉใදࣔ ۉʹෛՙΛ༩͑ΒΕ͍ͯΔ͔֬ೝՄೳ UIFBEͱDPOOFDUJPOͷόϥϯεΛՄࢹԽ w
Ϩϙʔτղੳ࣌ؒͷදࣔ !*NQMPWFEWFSTJPO
XSL "CPVUMPBEUFTU w Ϩϙʔτͷूܭʹऑ͍ ྫ͑ɺWFHFUBͷSFQPSUίϚϯυΈ͍ͨͳɺ WSϑΝΠϧΛूܭ͢ΔΑ͏ͳػೳଘࡏ͠ͳ͍ ෳIPTUͰXSLΛ࣮ߦͨ͠ࡍͷूܭ෦ɺ ಠࣗͰ࡞Δ͔͠ͳ͍ !$POT
XSL "CPVUMPBEUFTU w "CFNB57ͰछྨͷෛՙςετπʔϧΛ༻ -PDVTU ໖ີͳγφϦΦઃܭ͕ٻΊΒΕͨ࣌ QVTIड͚औΓ࣌ɺ$.ೖΓɺWJEFPFUD XSL ݶքੑೳࢼݧPS୯ൃςετͷ࣌
%3.UFDIOPMPHZFUD !4VNNBSZ
#JIJOEUIFTDFOFTTUPSZ
#JIJOEUIFTDFOFTTUPSZ ($14FSWJDFTJO6TF (,& ($& #JH%BUB 4UPSBHF%# /FUXPSL .BOBHFNFOU5PPM
#JIJOEUIFTDFOFTTUPSZ ($14FSWJDFTJO6TF (,& ($& #JH%BUB 4UPSBHF%# /FUXPSL .BOBHFNFOU5PPM
01 .POHP%#
#JIJOEUIFTDFOFTTUPSZ .POHP%# .POHP%#$MPVE.BOBHFS IUUQTXXXNPOHPECDPNDMPVEDMPVENBOBHFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# .POHP%#.BOBHFNFOU4FSWJDF .POHP%#$MPVE.BOBHFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# 3FTUPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# !3FTUPSFrCFGPSF .POHP%#4IBSEFE$MVTUFS NPOHPDºO $POGJH4FSWFST NPOHPEºO 4UPSFTEBUB BSCJUFSº
7PUFTGPSFMFDUJPO NPOHPT NJDSPTFSWJDF .POHP%#GPS4IBSE NPOHPEVNQ &YQPSUTEBUB
#JIJOEUIFTDFOFTTUPSZ .POHP%# !3FTUPSFrCFGPSF .POHP%#4IBSEFE$MVTUFS NPOHPDºO $POGJH4FSWFST NPOHPEºO 4UPSFTEBUB BSCJUFSº
7PUFTGPSFMFDUJPO NPOHPT NJDSPTFSWJDF .POHP%#GPS4IBSE NPOHPEVNQ &YQPSUTEBUB
#JIJOEUIFTDFOFTTUPSZ .POHP%# 0WFSWJFX w NPOHPEVNQ ($& ͕EVNQϑΝΠϧ࡞ w ࡞ͨ͠EVNQϑΝΠϧ($4
w EVNQϑΝΠϧΛݩʹNPOHPT͕SFTUPSF w ࣮ߦ࣌ࠁ". w ࣮ߦ࣌ؒNJO !3FTUPSFrCFGPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# 0WFSWJFX w NPOHPEVNQ ($& ͕EVNQϑΝΠϧ࡞ w ࡞ͨ͠EVNQϑΝΠϧ($4
w EVNQϑΝΠϧΛݩʹNPOHPT͕SFTUPSF w ࣮ߦ࣌ࠁ". w ࣮ߦ࣌ؒNJO !3FTUPSFrCFGPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# Њʮ͋ΕɺSFTUPSF͕ࣦഊ͍ͯ͠Δɻɻʯ !3FTUPSFrCFGPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# ؒແྗ !3FTUPSFrCFGPSF
ઈ #JIJOEUIFTDFOFTTUPSZ .POHP%#
#JIJOEUIFTDFOFTTUPSZ .POHP%# ͜Εෆ݈શ !3FTUPSFrCFGPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# $MPVE.BOBHFSͷ4OBQTIPU ɹɹɹɹɹɹɹػೳΛݕূ͢Δ͜ͱʹ !3FTUPSFrCFGPSF
#JIJOEUIFTDFOFTTUPSZ .POHP%# 3FTVMU w ࣮ߦ͕࣌ؒNJONJO ҎԼʹʂ &BTUFSO64ϦʔδϣϯͰɺσʔλྔ(ऑ ˞͋͘·Ͱ"CFNB57ͷڥͰͷ࣮
w ผڥͷ4OBQTIPUΛ༻ͯ͠ɺ TIBSEDIVOLใΑ͠ͳʹղܾͯ͘͠ΕΔ TIBSELFZSBOHF͚ͩөͯ͘͠ΕΔ !3FTUPSFrBGUFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# !3FTUPSFrBGUFS ⾠$BVUJPO w 3FTUPSF࣌XSJUFࢭͷͨΊʹɺҙਤతʹ$MPVE .BOBHFS͕NPOHPEΛࢭΊΔͷͰɺ ΦϯϥΠϯͰ༻ෆՄ ˞͋͘·Ͱ৽ن࡞࣌ɺ͋Δ͍4IBSEFE
$MVTUFSશମ͕ഁଛͨ͠ࡍʹ༻͢Δ͜ͱ
#JIJOEUIFTDFOFTTUPSZ .POHP%# 8FCίϯιʔϧۃྗ৮Γͨ͘ͳ͍ !3FTUPSFrBGUFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# $-5Λ࡞͠·ͨ͠ɻ !3FTUPSFrBGUFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# • NDN .POHP%#$MPVE.BOBHFS DPNNBOE !3FTUPSFrBGUFS
#JIJOEUIFTDFOFTTUPSZ .POHP%# 'VUVSFXPSL w 4OBQTIPUΛબ͢Δػೳ w ϓϩδΣΫτຖʹ"MFSUͷઃఆΛ࡞͠ɺཧͰ͖Δػೳ !3FTUPSFrBGUFS
01 $MPVE#JHUBCMF
#BDLVQ .FUSJDT #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
01 $MPVE#JHUBCMFrCBDLVQ
ઌʹ݁ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
w ํ๏͔ͭ͠ͳ͍ $MPVE%BUBGMPXΛ༻ͯ͠ςʔϒϧΛҰ࿈ͷ ʮ)BEPPQγʔέϯεϑΝΠϧʯͱͯ͠FYQPSU !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
w ํ๏͔ͭ͠ͳ͍ $MPVE%BUBGMPXΛ༻ͯ͠ςʔϒϧΛҰ࿈ͷ ʮ)BEPPQγʔέϯεϑΝΠϧʯͱͯ͠FYQPSU ϢʔςΟϦςΟ͕༻ҙ͞Ε͍ͯΔ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
21PJOUJOUJNFతͳόοΫΞοϓํ๏ʁ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
"ݱ࣌Ͱଘࡏ͠ͳ͍ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
• IUUQTTUBDLPWFSGMPXDPNRVFTUJPOTHPPHMFDMPVECJHUBCMFCBDLVQBOESFDPWFSZ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
• IUUQTTUBDLPWFSGMPXDPNRVFTUJPOTHPPHMFDMPVECJHUBCMFCBDLVQBOESFDPWFSZ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
UIFSFJTOPQMBOOFE EFMJWFSZEBUFBUUIJTUJNF !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
UIFSFJTOPQMBOOFE EFMJWFSZEBUFBUUIJTUJNF !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF ݄࣌ͷճͳͷͰɺ͔ͨ͠͠Βͦͷ͏ͪ ϦϦʔε͞ΕΔ͔ʁ
24OBQTIPUରԠͯ͠ͳ͍ͷʁ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
• IUUQTDMPVEHPPHMFDPNCJHUBCMFEPDTICBTFEJGGFSFODFTTOBQTIPUT #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
"ݱ࣌Ͱαϙʔτ͞Ε͍ͯͳ͍ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
զʑαϙʔτ͞ΕΔ·Ͱɺ ࢦΛ͘Θ͔͑ͯͭ͠ͳ͍ʁ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
/0 !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
·ͨ·ͨ$-5Λ࡞͠·ͨ͠ɻ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
• CJHUBCMFFYQPSUDPNNBOE #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF !#BDLVQ
0WFSWJFX w جຊతʹόοΫΞοϓ͍ͨ͠ςʔϒϧͱDMVTUFSใΛ Ҿͱ࣮ͯͯ͠͠ߦ͢Δ͚ͩ #BDLVQ࣌ʹඞཁͳ($4#VDLFUKBSϑΝΠϧ DCUDPNQPOFOUɺΑ͠ͳʹཪͰࣗಈతʹ ༻ҙͯ͘͠ΕΔΈ !#BDLVQ #JIJOEUIFTDFOFTTUPSZ
$MPVE#JHUBCMF
'VUVSFXPSL w ,TͷKPCSFTPVSDFͰఆظ࣮ߦੈཧ w 4OBQTIPU"1*͕༻ҙ͞ΕͨΒɺ(P$MJFOU-JCSBSZ Λ༻ͯ͠ɺطଘ$-5ΛSFQMBDF !#BDLVQ #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
01 $MPVE#JHUBCMFrNFUSJDT
˞4UBDLESJWFSར༻ऀ͚ͷ༰ w .FUSJDTࣗମطʹ(" &YQMPSFSͰදࣔՄೳ IUUQTDMPVEHPPHMFDPNNPOJUPSJOHSFMFBTFOPUFT • ͨͩ͠ɺ%BTICPBSE͔Β#JHUBCMF.FUSJDTʹΞΫηε ͢ΔͨΊʹ8IJUFMJTUਃ͕ඞཁ Ћ
"MFSUJOHઃఆಉ༷ !.FUSJDT #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
!.FUSJDT #JIJOEUIFTDFOFTTUPSZ $MPVE#JHUBCMF
⾠$BVUJPO w &SSPSDPVOUͳͲɺ·ͩ4UBDLESJWFS͔ΒΞΫηεͰ͖ ͳ͍NFUSJDͰ"MFSUJOHQPMJDZΛઃఆ͢ΔͱɺΕͳ͘ શQPMJDZҰཡ͕ࢀরෆՄೳͱͳΓ·͢ ˞طଘͷ"MFSUJOHQPMJDZʹӨڹΛٴ΅͢ͷͰͳ͍ ͋͘·ͰࢀরʹͷΈӨڹ !.FUSJDT #JIJOEUIFTDFOFTTUPSZ
$MPVE#JHUBCMF
01 0UIFS
w -PBEڥDPTU͕͔͔Δ ຊ൪ڥͱ΄΅ಉ͡ߏ ʮ༻͢Δ͔࣌͠ىಈ͠ͳ͍ʯӡ༻ ݕূ࣌ʹ༻͢Δ࣌͋Δ ਓྗͰىಈঢ়گΛΧόʔ͖͠Εͳ͍ !"CFNB#PU 0UIFS #JIJOEUIFTDFOFTTUPSZ
w -PBEڥDPTU͕͔͔Δ ຊ൪ڥͱ΄΅ಉ͡ߏ ʮ༻͢Δ͔࣌͠ىಈ͠ͳ͍ʯӡ༻ ݕূ࣌ʹ༻͢Δ࣌͋Δ ਓྗͰىಈঢ়گΛΧόʔ͖͠Εͳ͍ !"CFNB#PU 0UIFS #JIJOEUIFTDFOFTTUPSZ
ఆ࣌ͷλΠϛϯάͰ#PU͔Β ىಈঢ়گΛ௨͢ΔΈΛ࡞ͬͨ
!"CFNB#PU 0UIFS #JIJOEUIFTDFOFTTUPSZ
!"CFNB#PU 0UIFS #JIJOEUIFTDFOFTTUPSZ
w 7BSOJTIΛ௨͍ͯ͠ΔFOEQPJOUɺDBDIFՄೳͳ FOEQPJOUʹؔͯ͠ɺଓʑͱ$MPVE$%/Λಋೖத .POHP%#ͷόʔετෛՙରࡦ ىಈ࣌ͷෛՙରࡦ #BDLFOE5SBGGJDͷ੍ FUD !$MPVE$%/ 0UIFS #JIJOEUIFTDFOFTTUPSZ
!$MPVE$%/ 0UIFS #JIJOEUIFTDFOFTTUPSZ
$PODMVTJPO
/VMM $PODMVTJPO w "CFNB57ͰछྨͷෛՙςετπʔϧΛ ༻͍ͯ͠ΔΑ -PDVTUXSLͩΑ ঢ়گʹԠ͍͚͍ͯͯ͡ΔΑ w ࠓ·Ͱ৭ʑͳͱಆ͖ͬͯͨΑ
ͦͷʹ͋ͷख͜ͷखͰղܾ͖ͯͨ͠Α ·ͩ՝ࢁੵΈͩΑ
"CFNB57ɺΠϯλʔωοτͰ ςϨϏ͕Ͱ͖Δͷ͔ /VMM $PODMVTJPO
"CFNB57ɺΠϯλʔωοτͰ ςϨϏ͕Ͱ͖Δͷ͔ ਓྨ /VMM $PODMVTJPO
ଓ͖ɺ࣍ճͷ%FW$POͰ /VMM $PODMVTJPO
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