mruby-2017-yeah - Speaker Deck

mruby-2017-yeah

by Kazuhiko Yamashita

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!QZBNB(.01FQBCP *OD CVJMEFSTDPO5PLZP ͜͜·Ͱग़དྷΔNSVCZ

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νʔϑςΫχΧϧϦʔυ ࢁԼ࿨඙!QZBNB ϗεςΟϯάࣄۀ෦ IUUQTUFOTOBQPODPN

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-JOVYͷ౷߹Ϣʔβʔ؅ཧ 50.-ܗࣜ )551+40/ -%"1΍%#ͷ؅ཧͷӡ༻ෛՙ ѻ͍΍͍͢ϑΥʔϚοτ ൚༻ੑɾ֦ுੑ

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Ͳ͜·Ͱग़དྷΔͷ NSVCZ

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NSVCZͷಛ௃ ܰྔ3VCZ ૊ΈࠐΈ Մൖੑ

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ܰྔ3VCZ $ valgrind ruby -e 'puts “buildercon Tokyo 2017 Yeah!!!!” ==3537== HEAP SUMMARY: ==3537== in use at exit: 2,719,641 bytes in 23,303 blocks ==3537== total heap usage: 48,117 allocs, 8,876,176 bytes allocated $ valgrind mruby -e 'puts “buildercon Tokyo 2017 Yeah!!!!” ==3638== HEAP SUMMARY: ==3638== in use at exit: 0 bytes in 0 blocks ==3638== total heap usage: 4,468 allocs, 483,579 bytes allocated লϝϞϦ

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ܰྔ3VCZ $3VCZͱͷҧ͍ ૊ΈࠐΈ༻్ ඪ४ϞδϡʔϧɾΫϥε HFNNSCHFN 3FHFYQ΍'JMFͳͲNSVCZͰ͸֦ுѻ͍ OPHFNJOTUBMM

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૊ΈࠐΈ লϝϞϦΛ׆͔ͯ͠ϛυϧ΢ΣΞ΁ ૊ΈࠐΈ NPE@NSVCZ OHY@NSVCZ "QBDIF)551%4FSWFSͷઃఆ΍τϥϑΟοΫΛNSVCZͰ੍ޚ NPE@NSVCZ૬౰ͷಈ࡞ΛOHJOYͰ࣮ݱ

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NPE@NSVCZ "QBDIF)551% mrubyFixupsFirst (ap_hook_fixups) mrubyLogTransactionLast (ap_hook_log_transaction) ɾ ɾ ɾ request *G.PEVMFNPE@NSVCZD NSVCZ'JYVQT'JSTUFUDIUUQEDPOGEIPPLSCDBDIF *G.PEVMF # hook.rb Apache.echo "hello world!" "QBDIFͷϑοΫΛར༻͠ɺNSVCZΛ࣮ߦ

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Մൖੑ ΫϩείϯύΠϧ ΦϖϨʔγϣϯπʔϧ NSVCZDMJ IUUQTHJUIVCDPNIPOFNSVCZDMJ

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NSVCZΛར༻ͨ͠։ൃ NSCHFN

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HFNͱNSCHFNͷҧ͍ ࢀর ಺แ ίϯύΠϧ ಈ࡞؀ڥ NSCHFN͸ίϯύΠϧ࣌ʹNSVCZʹ ૊ΈࠐΈ ϑΝΠϧγεςϜ͕ଘࡏ͠ͳ͍ಈ࡞؀ڥ΋ ͋ΔͨΊɺSFRVJSF΍MPBE͸ඪ४Ͱ͸ αϙʔτ֎ gem CRuby CRuby mruby mrbgem

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NSCHFN SFRVJSF͕ͳͯ͘΋ϑΝΠϧΛ෼ׂͰ͖Δ ࠶ར༻ੑ ίϯύΠϧͰߟྀ͞ΕΔͷͰɺϑΝΠϧΛ෼ׂͯ͠؅ཧग़དྷΔ HFNͱߟ͑ํ͸ࣅ͍ͯΔ 3VCZ(FNTʹ͋ͨΔNHFNMJTU

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NSCHFNΛ։ൃ͢Δ ݴޠ͸3VCZ͔$ݴޠΛओʹར༻ 3VCZ ᶃ ܭࢉίετͷ௿͍ॲཧΛ  ੜ࢈ੑߴ͘։ൃ ᶄ $ݴޠͰ։ൃͨ͠ΫϥεΛ  ར༻ͨ͠ϏδωεϩδοΫ ᶃ ܭࢉίετͷߴ͍ॲཧΛ࣮૷ ᶄ γεςϜɾίʔϧ΍"1*Λར༻ $ݴޠ

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ͳͥ๻͸ɺNSVCZͳͷ͔

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NSVCZ͸ -JHIU-BOHVBHFͷ΋͏Ұาઌ΁ ΤϯδχΞΛ੒௕ͤ͞Δ

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$ݴޠ΍γεςϜϨΠϠʔͱͷ ग़ձ͍

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࠶ܝ NSVCZͷಛ௃ ܰྔ3VCZ ૊ΈࠐΈ Մൖੑ

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NSVCZͷಛੑΛ׆͔͢ͳΒ ௿ϨΠϠʔ

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ΑΓਂ͘જΔͨΊʹ NSVCZTJHOBMUISFBE εϨουηʔϑͳ4JHOBMΫϥε ॲཧ͍ͨ͠γάφϧҎ֎ΛTJHNBTLͨ͠εϨουͰ  TJHXBJU͢Δ 4QFDJBM5IBOLTIUUQTHJUIVCDPNLTTTNSVCZTJHOBM

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ΑΓਂ͘જΔͨΊʹ main thread(pid:X) signal thread kill -HUP X SignalThread.trap(:HUP) do configure.reload end reload ᶃγάφϧىಈ ᶄ)61γάφϧΛϝΠϯεϨουͷ1*%΁ૹΔ NSVCZTJHOBMUISFBE

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ΑΓਂ͘જΔͨΊʹ

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NSVCZ4ZNCPM hash = { key: “ઈର༏উ͢Δͧ” } LFZ͸ͲͷΑ͏ʹղܾ͞Ε͍ͯΔʁ

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ͦ͜ʹίʔυ͕͋Ε͹ ෼͔Εͳ͍͜ͱ͸Ұͭ΋ͳ͍

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σόοάͷ͠΍͢͞ ࠷దԽఀࢭ NSVCZͱNSCHFNΛڥͳ͘σόοά DUBHTඞܞ DPOGDDqBHT0H

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HEC $ gdb mruby/bin/mruby (gdb) b mrb_sym2name (gdb) run example/builderscon.rb (gdb) p name $3 = 0x70d4b0 “Lazy” … (gdb) p mrb->symtbl[0] $6 = {lit = 1 '\001', len = 9, name = 0x474950 "inherited"} (gdb) p mrb->symtbl[1] $7 = {lit = 1 '\001', len = 12, name = 0x4748b2 "__attached__"} (gdb) p mrb->symtbl[2] $8 = {lit = 0 '\000', len = 11, name = 0x6c1e20 "BasicObject"}

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mrb->symtbl [0] name =>inherited [1] name => __attached__ … [10] name => Lazy … [31] name => USR1 NSVCZ4ZNCPM 4ZNCPM5BCMF mrb_value :USR1 => sym => 10

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OBNFUP@T

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໰୊ͷઌૹΓΛಉ྅͕ϑΥϩʔ͢Δ νʔϜϓϨΠ͕ϖύϘʹ͸͋Γ·͢ SFGTIUUQTHJUIVCDPNNBUUONSVCZUISFBEQVMM

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NSCHFNͷσόοά͸ NSVCZͱͷͭͳ͕Γ͕ڧ͍ ͭ·Γ ݴޠ΁ͷཧղ͕ਂ·Δ

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4&(7

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Նͷ෩෺ࢻηάϝϯςʔγϣϯϑΥʔϧτ ϝϞϦͷΞΫηεҧ൓ ม਺ॳظԽ࿙Ε Ṗόά

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CFGPSFNSVCZ

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BGUFSNSVCZ # gdb /usr/sbin/nginx core.11528 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-94.el7 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details.

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HECͰσόοά ม਺͕/6-- ίϯύΠϧ Φϓγϣϯʁ ϚΫϩʁ FUD HECͷ͋Δ฻Β͠ ௐ΂Δ ෼͔Δ ରॲ͢Δ

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CFGPSF BGUFS

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ਂ͘ཧղ͢Δͱ͍͏͜ͱ NSVCZ͚ͩͰ͸ͳ͍ීวత஌ࣝ *OUFSOFUΑΓԶͷ΄͏͕ৄ͍͠ମݧ HECσόοά͚ͩͰ͸ͳ͘ɺ,FSOFMɺ$ϥΠϒϥϦपลͷ஌ࣝ ϛυϧ΢ΣΞ΍ɺ04ͷϘτϧωοΫ΍ύϥϝʔλʔʹഭΕΔΑ͏ʹͳΔ ݕࡧͯ͠΋ग़ͯ͜ͳ͍஌ࣝΛಘΔաఔͰֶͿ͜ͱ΍ɺ ໰୊ʹରͯ͠ɺ௥͍੾Δͱ͍͏͜ͱ

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NSVCZʹݟग़͢ ΤϯδχΞͱͯ͠ͷνϟϯε

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NHFNMJTU NSCHFNΛެ։͢ΔϦϙδτϦ

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NSCHFNSBLF NSCHFNͷґଘؔ܎ ίϯύΠϧΦϓγϣϯΛఆٛ MRuby::Gem::Specification.new('mruby-signal-thread') do |spec| spec.license = 'MIT' spec.authors = 'pyama86' spec.cc.flags << "-DMRB_THREAD_COPY_VALUES" spec.add_dependency 'mruby-thread' spec.add_test_dependency 'mruby-process' end

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࣌఺ͷNHFNMJTU SVCZHFNTPSHͷొ࿥਺

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NSCHFNԽ͞Εͯͳ͍ϥΠϒϥϦ (FNUPNSCHFN PQFOTTM UIPS GBSBEBZ NSVCZBDNFDMJFOU

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'BTU$FSUJpDBUF ngx_mruby acme-client Redis client ʮOHY@NSVCZͰ࠷ॳͷ)5514ΞΫηε࣌ʹࣗಈͰূ໌ॻΛઃఆՄೳʹ͢Δ ɹ'BTU$FSUJpDBUFͷఏҊͱ1P$ʯ ɹɹIUUQICNBUTVNPUPSKQFOUSZ ᶃΫϥΠΞϯτ͔ΒΞΫηε ᶄOHY@NSVCZ͔Β3FEJTʹΞΫηε͠ɺূ໌ॻͷ༗ແΛ֬ೝ ᶅূ໌ॻ͕ͳ͍৔߹ɺ-FU`T&ODSZQUΛར༻ͯ͠৽نൃߦ ᶆൃߦͨ͠ূ໌ॻΛ3FEJTʹॻ͖ࠐΉ ᶇΫϥΠΞϯτ͸IUUQT௨৴Ͱ͖Δ

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NSVCZBDNFDMJFOU VOJYDIBSMFTBDNFDMJFOU SVCZPQFOTTM -FU`T&ODSZQUΛར༻ͨ͠ূ໌ॻൃߦ ূ໌ॻͷൃߦʹඞཁͳϞδϡʔϧɺΫϥεΛDMPOF

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(FNUPNSCHFN $3VCZͱͷࠩҟ͸ϚΫϩͰରॲ͢Δ $3VCZͷ࣮૷ʹҾ͖ͮΒΕ͗͢ͳ͍

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$3VCZͱͷࠩҟ͸ϚΫϩͰରॲ͢Δ #define VALUE mrb_value #define ID mrb_sym #define SYM2ID(mrb, o) mrb_sym2str(mrb, mrb_symbol(o)) #define ID2SYM(o) mrb_symbol(o) $3VCZͰ͸ఆٛࡁΈɺNSVCZͰ͸ະఆٛͳ ϚΫϩ΍ϝιου͸ͦΕͳΓʹ͋Δ

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όουϊ΢ϋ΢ ஔ׵

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όουϊ΢ϋ΢ த్൒୺ͳ࠷దԽ

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$3VCZͷ࣮૷ʹҾ͖ͮΒΕ͗͢ͳ͍ Linux Ruby on Rails CRuby Linux nginx mruby ద༻ྖҬ͕ҟͳΔͷͰ ࣅͯඇͳΔ΋ͷͱߟ͑Δ

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ͱ͖ʹ͸ׂΓ੾Δ ڱ͍ͱ͜ΖͰ࢖͏ͳΒ͹ແཧʹ޿͘αϙʔτ͠ͳ͍ ΠϯλʔϑΣʔε΋؀ڥʹ߹Θͤͯ΍͍͖ͬͯ

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NSVCZͰ΍͍͖ͬͯ ͋ͳͨ΋ஶ໊ͳϥΠϒϥϦͷ࡞ऀʹ NSVCZ͔Β޿͕ΔϨΠϠʔͷੈքɺͦͷઌʹ

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զʑ͸Ͳ͏΍ͬͯདྷ͔ͨ

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΍͍͖ͬͯن໛ Ϣʔβʔ਺ສਓ αΠτ਺ສαΠτ ΞΫηε਺ԯΞΫηε೔ ௒ߴूੵϨϯλϧαʔό 1SPYZ͸OHJOYɺ6TFST͸"QBDIF)551%Λ࠾༻

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ϦϦʔεޙɺ ̍िؒͰ ສαΠτҎ্͕ )5514)551

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44-ূ໌ॻͷ؅ཧ TJUFFYBNQMFDPN ൿີ伴 ূ໌ॻ ̍ສຕͷূ໌ॻ؅ཧ ഑෍ํࣜ ෳ਺ͷαʔόʹͲͷΑ͏ʹ഑෍͢Δ͔ ߋ৽ ߋ৽ظݶͷ؅ཧ΍ɺߋ৽͸Ͳ͏ߦ͏͔ ཤྺ όʔδϣχϯάͲ͏͢Δ͔ɺ੾Γ໭͠ σʔλ͸͋Δ͔

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server { listen 443 ssl http2; ssl on; ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; ssl_session_timeout 1d; ssl_session_cache shared:SSL:50m; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; server_name example.com; root /var/www/releases; } º

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ಈతূ໌ॻಡΈࠐΈ

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OHY@NSVCZূ໌ॻͷಈతಡΈࠐΈ ਃ͠ࠐΈ ϖʔδ HPMBOH &DIP TJEFLJR .Z42- OHY@NSVCZ SFEJT NSVCZ@TTM@IBOETIBLF@IBOEMFS@DPEF TTM/HJOY44-OFX EPNBJOTTMTFSWFSOBNF SFEJT6TFSEBUBOFXSFEJT TTMDFSUJpDBUF@EBUBSFEJT<\EPNBJO^DSU> TTMDFSUJpDBUF@LFZ@EBUBSFEJT<\EPNBJO^LFZ>

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OHY@NSVCZ ಈతϓϩΩγ σʔλΞΫηεͷNSCHFNԽ

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ಈతϓϩΩγ OHY@NSVCZ VTFST FYBNQMFDPN VTFST FYBNQMFDPN .Z42- MPDBUJPO\ NSVCZ@TFUCBDLFOEWBSMJCNSVCZIPPLSCDBDIF JG CBDLFOE \ SFUVSO ^ QSPYZ@QBTTIUUQTCBDLFOE ^

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ಈతϓϩΩγ αʔόͷઃఆมߋ͕ෆཁ ҠઃΛ$IBU0QT ৼΓ෼͚ઌͷࣗ༝౓

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σʔλΞΫηεΛNSCHFNԽ Inmemory KVS Redis MySQL fetch fetch cache cache IUUQTHJUIVCDPNQFQBCPNSVCZNTE සൟʹΞΫηε͢Δ৘ใ΄ͲΦϯϝϞϦͰॲཧ

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αʔόෛՙࣗಈ੍ޚ

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αʔόෛՙରԠ ͍͢͝τϥϑΟοΫ ߈ܸɾԌ্ ಉ࣌઀ଓ਺੍ݶ αʔό ಉډऀ ؂ࢹһ BQBIDF)551%

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ෛՙ੍ޚͷࣗಈԽ (PMBOHͰϩάύʔαʔΛ࣮૷ NSVCZIUUQBDDFTTMJNJUFS NSVCZDHSPVQ

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(PMBOHͰϩάύʔαʔΛ࣮૷ 1SPEVDUOBNFBMCB ໷໌͚ ᶃ աڈ/෼ͷϩάΛ5BJM ᶄ 8FCαʔόͷॲཧ࣌ؒΛΞΧ΢ϯτɺWIPTU͝ͱʹूܭ ᶅ ᮢ஋ɺαϯϓϦϯά਺ͳͲͷ৚݅෇

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NSVCZBDDFTTMJNJUUFS NPE@NSVCZͱ૊Έ߹Θͤͯɺ NSVCZͰಉ࣌ΞΫηε਺Λ੍ޚ͢ΔNSCHFN BQBIDF)551% CMPDL

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NSVCZBDDFTTMJNJUUFS ༨ஊ 7JSUVBM)PTU %PDVNFOU3PPUIPNFVTFSTFYBNQMFDPNXFC 4FSWFS/BNFFYBNQMFDPN 7IPTU.BY$MJFOUT "EE)BOEMFSBQQMJDBUJPOYIUUQEQIQQIQ "EE5ZQFBQQMJDBUJPOYIUUQEQIQQIQ 7JSUVBM)PTU Ҏલ͸NPE@WIPTU@NBYDMJFOUTΛ ར༻ͯ͠઀ଓ਺੍ޚ IUUQTHJUIVCDPNNBUTVNPUPSZNPE@WIPTU@NBYDMJFOUT WIPTU͝ͱʹಉ࣌઀ଓ਺Λهड़Մೳ

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NSVCZBDDFTTMJNJUUFS ༨ஊ NPE@WIPTU@NBYDMJFOUTͰ͸(SBDFGVM3FTUBSU͕ඞཁ (SBDFGVM3FTUBSUʹ͓͚ΔҰ࣌తͳෛՙ૿୆ ੤໿ͱ੍໿͔Βɺͦͷଞͷιϑτ΢ΣΞ͔Βѻ͍ͮΒ͍ঢ়ଶ NPE@WIPTU@NBYDMJFOUTΛར༻ͨ͠ ઀ଓ੍ݶͷ՝୊

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੤໿ͱ੍໿ "QBDIF)551%ͷϢʔβʔ͝ͱͷઃఆϑΝΠϧͷมߋͷ ࢓༷͕ݱࡏͷઃఆϑΝΠϧΛύʔεͯ͠ɺઃఆͷ௥Ճ࡟আΛ  ߦ͍ͬͯΔ 7JSUVBM)PTU %PDVNFOU3PPUIPNFVTFSTFYBNQMFDPNXFC 4FSWFS/BNFFYBNQMFDPN "EE)BOEMFSBQQMJDBUJPOYIUUQEQIQQIQ "EE5ZQFBQQMJDBUJPOYIUUQEQIQQIQ 7JSUVBM)PTU %PDVNFOU3PPUIPNFVTFSTFYBNQMFDPNXFC 4FSWFS/BNFFYBNQMFDPN "EE)BOEMFSBQQMJDBUJPOYIUUQEQIQQIQ

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ઃఆϑΝΠϧΛมߋ͢Δ͜ͱͳ͘ ಈతʹ੍ޚ

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NPE@NSVCZ NSVCZBDDFTTMJNJUUFS BMCB BDDFTTMPH MJNJUZNM MPDBM NFNDBDIF BDDFTT MJNJUUFS ϩάղੳ ੍ݶઃఆ࡞੒ ੍ݶઃఆ͕ଘࡏ͢Δ৔߹ʹϝϞϦಡΈࠐΈ MPDBMNFNDBDIF ΠϯϝϞϦ,74 Λར༻͢Δ͜ͱͰઃఆͷ࠶ಡࠐΛෆཁʹ IUUQTHJUIVCDPNNBUTVNPUPSZNSVCZMPDBMNFNDBDIF

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NSVCZDHSPVQ

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DHSPVQ$POUSPM(SPVQ ϓϩηεΛάϧʔϓԽ͠ɺάϧʔϓʹରͯ͠ $16ར༻࣌ؒ΍ɺϝϞϦར༻ྔͷ੍ݶΛ ߦ͏͜ͱ͕ग़དྷΔ

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NSVCZDHSPVQ IUUQE IUUQE $16 ར༻࣌ؒ ಉ࣌઀ଓ੍ݶͰ཈੍Ͱ͖ͳ͍ɺ ஶ͘͠ෛՙͷߴ͍εΫϦϓτ΍ ϓϥάΠϯΛ$16੍ݶ͢Δ MJNJUFE@DHSPVQ$HSPVQ$16OFX lIUUQEz MJNJUFE@DHSPVQDSFBUFVOMFTTMJNJUFE@DHSPVQFYJTU MJNJUFE@DHSPVQBUUBDI

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ࣗಈ੍ޚͷ͋Δੈք ͍͢͝τϥϑΟοΫʜ ߈ܸɾԌ্ αʔό ಉډऀ ؂ࢹһ BQBIDF)551% ࣗಈ੍ޚ͡Όʂʂʂ

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ίϯςφܕΫϥ΢υϗεςΟϯά NSVCZ࣮૷ͷίϯςφϥϯλΠϜIBDPOJXB 'BTU$POUBJOFSΞʔΩςΫνϟ ΫϩʔζυЋॱ࣍Ҋ಺த ͱʹ͔͘৭ʑ΍͹͍αʔϏε IUUQTNDMPMJQPQKQ

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