リアクティブシステムの鼓動(Scala/Akka)

ϦΞΫςΟϒγεςϜͷޑಈ 4DBMB"LLB ͔ͱ͡ΎΜ !KJLP

ࣗݾ঺հ w ͔ͱ͡ΎΜ !KJLP w IUUQCMPHKJLPNF w ࢓ࣄ͸$IBU8PSLࣾͰςοΫϦʔυ w
$IBU8PSLαʔόج൫෦෼ͷ৽ن։ൃ w ઐ໳෼໺ʁ w υϝΠϯۦಈઃܭ w ϦΞΫςΟϒγεςϜ w ࠷ۙݚᮎ͍ͯ͠Δ͜ͱ w 4DBMB"LLB %%% w "OHVMBSc3FBDU %%%

4FBTBS͔Β4DBMB΁ w ೥͔Β w 5FFEB 4%BP w 4$ISPOPT 4$POpH w
೥݄͔Β w ࢓ࣄͰ͸+BWBɻझຯͰ͸4DBMBɻ w ೥݄ w ๭EࣾεϚϑΥ޲͚3&45"1*αʔόΛ1MBZͰ։ൃ w ๭Eࣾνϟοτ"1*αʔόΛ'JOBHMFͰ։ൃ ϓϩτλΠϓ։ൃ w ೥ w ๭(ࣾνϟοτ"1*αʔόΛ'JOBHMFͰ։ൃɻ w ೥ w $IBU8PSLࣾϝοηʔδϯάج൫Λ"LLBͰ։ൃɻ"LLBΛ·͡Ίʹ ࣮ફͰ࢖͍࢝Ίͨͷ͸਺ϲ݄ɻ

ϦΞΫςΟϒγεςϜ͸·ͩᴈ໌ظɻ ࠓޙʹඋ͑ͯɺͦͷޑಈΛײͯ͡΋Β ͑ΔΑ͏ͳηογϣϯͰ͢ɻ

ͳͥϦΞΫςΟϒγεςϜͳͷ͔

എܠʹ͍ͯ͠ΔίϯςΩετͷมԽ w αʔό୆਺ͷมԽ w ਺े୆͔Β਺ઍίΞ΁ w Ԡ౴࣌ؒͷมԽ w ඵ͔ΒϛϦඵΦʔμʔ΁ w
μ΢ϯλΠϜͷมԽ w ਺͔࣌ؒΒݶΓͳ࣌ؒ͘΁ w σʔλن໛ͷมԽ w ΪΨ͔Βϖλ΁

ཁٻͷมԽʹͲ͏΍ͬͯରԠ͢Δͷ͔ʁ w ϋʔυ΢ΣΞΛލ͕ΔϚϧνίΞΛϑϧ׆༻ ͢ΔΞϓϦέʔγϣϯΛͲ͏΍࣮ͬͯݱ͢Δͷ ͔ w Ԡ౴࣌ؒΛͲ͏΍ͬͨΒʹͰ͖Δͷ ͔ʁ w ͷՔಇ཰ΛͲ͏΍࣮ͬͯݱ͢Δͷ͔ʁ
w େن໛σʔλˠ๲େͳλεΫ͕ൃੜ͢ΔՄೳ ੑɻߴεϧʔϓοτͱ௿஗Ԇ΁ͷཁٻΛͲͷΑ ͏ʹղܾ͢Δͷ͔ʁ

ࢧ͑Δݪཧ ఏڙ͢ΔՁ஋ લఏͱͳΔखஈ ϦΞΫςΟϒએݴ w IUUQXXXSFBDUJWFNBOJGFTUPPSH w ʹެ։͞Εͨએݴɻ໊ ͕ॺ໊ɻ-JHIUCFOEࣾͷ$50 +POBT#POÉSࢯ͕'JSTU"VUIPSɻ
w ଈԠੑ 3FTQPOTJWF w γεςϜ͸ՄೳͳݶΓ଎΍͔ʹԠ ౴͢Δɻ w ଱ো֐ੑ 3FTJMJFOU w γεςϜ͸ো֐ʹ௚໘ͯ͠΋ଈԠ ੑΛอͪଓ͚Δɻ ଈԠੑ ϝοηʔδۦಈ ଱ো֐ੑ ஄ྗੑ w ஄ྗੑ &MBTUJD w γεςϜ͸ϫʔΫϩʔυ͕ม ಈͯ͠΋ଈԠੑΛอͪଓ͚Δɻ w ϝοηʔδۦಈ .FTTBHF %SJWFO w ίϯϙʔωϯτؒΛඇಉظ ʹϝοηʔδΛૹड৴͢Δ ௨৴ελΠϧɻϝοηʔδ ύογϯάͱ΋ݴΘΕΔɻ

ͦ͜Ͱ"LLBͰ͢Α

"LLBͱ͸ w IUUQBLLBJPॳظϦϦʔε͸೥ɻ w -JHIUCFOEࣾ$50+POBT#POÉSࢯ͕࠷ॳʹ։ൃɻ w ىݯ͸&SMBOHɻ w "DUPSϞσϧ͸೥ʹ.*5ͷ$BSM)FXJUUࢯ͕ߟҊ ͕ͨ͠ɺ࣮༻Ͱ͸&SMBOHΑͬͯ༗໊ʹͳͬͨɻ
w ಛ௃ w ϦΞΫςΟϒએݴͷίϯηϓτΛαϙʔτ͍ͯ͠Δ w ࠾༻ࣄྫ w ιʔγϟϧϝσΟΞɺσʔλղੳɺϔϧεέΞɺ౤ ࢿ෼໺ ϚʔνϟϯτɾόϯΩϯά ɺΪϟϯϒϧ ܥʜɻ

ͳͥ"LLBͳͷ͔ w $16ةػ w γϯάϧίΞةػ ೥ࠒ͔ΒϚϧνίΞొ৔ w ϚϧνίΞ͸୯ҰίΞ͕௿଎ʹͳΔ܏޲ʹ͋ΔͨΊɺΞϓϦ
έʔγϣϯͷฒߦ౓͕௿͍ͱύϑΥʔϚϯε͕௿Լ͢Δͱ͍ ͏ϦεΫ͕͋Δ ϚϧνίΞةػ ɻ͔͠͠ɺεϨουϓϩά ϥϛϯά͸ɺσουϩοΫ΍ϨʔείϯσΟγϣϯɺՄࢹੑ ͷ໰୊ͳͲͰඇৗʹ೉͍͠ͱ͍͏໰୊͕͋Δɻ w $,໰୊ w ૿͑ଓ͚ΔΫϥΠΞϯτΛͲͷΑ͏ʹॲཧ͢Δ͔ͷ໰୊ɻ໰ ୊ʹͳΔͷ͸ϒϩοΩϯά*0 /HOJY ʙ /PEFKT ʙ ͸ϊϯϒϩοΩϯά*0ͱΠϕϯτϧʔϓͰ ղܾͨ͠

ͳͥ"LLBͳͷ͔ w ϚϧνίΞةػΛλʔήοτʹͨ͠ݴޠͷొ৔ w &SMBOH 4DBMB ʜ w ෆมੑ΍ܰྔϓϩηεͳͲ
w &SMBOHͷ఻આ w ೥&SJDTTPO͕ΞΫλʔϞσϧΛϕʔεʹͨ͠&SMBOHΛ։ ൃɻి࿩ަ׵ػͰ OJOFOJOFT࿦ཧతʹ͸ ೥ؒͷՔಇͰඵͷఀࢭ࣌ؒ ɻ೥8IBU"QQ͕୆ͷ αʔόͰສΫϥΠΞϯτΛࡹ͘ɻ w "LLBͷొ৔ w ೥"LLBϦϦʔεɻϝοηʔδۦಈ ϊϯϒϩοΩϯ ά*0Ͱ$,໰୊Λղܾɻ೥ͷهࣄͰ͸&SMBOHͷഒͷ εϧʔϓοτΛൃشͨ͠ͱ͍͏ࣄྫ΋͋Δɻ

"LLBͷओͳϓϩμΫτ w BLLBBDUPS w ෼ࢄͱฒߦΛ࣮ݱ͢ΔͨΊͷΞΫλʔϞσϧΛఏڙ͢Δɻ؆୯ͳ"1* ͰεϨου؅ཧ΍ϩοΫͷऔΓѻ͍Λܰݮɻ w BLLBSFNPUF w
ϦϞʔτ্ͷϊʔυͰՔಇ͢ΔΞΫλʔʹϝοηʔδύογϯά͢Δ ͨΊͷϓϩμΫτɻ w BLLBDMVTUFS w ଱ো֐ੑͷ͋Δ෼ࢄܕ11ϕʔεΫϥελΛߏங͢ΔͨΊͷϓϩμΫ τɻBLLBDMVTUFSTIBSEJOHΛ࢖͏ͱΫϥελʔ্ͷಛఆͷϊʔυʹΞ ΫλʔΛγϟʔσΟϯάͰ͖Δɻ w BLLBIUUQ FYQFSJNFOUBM w )551Λܦ༝ͯ͠"DUPSΛެ։ͨ͠Γɺ"DUPSϕʔεͷ)551ΫϥΠΞϯ ταʔϏεΛར༻͢ΔͨΊͷϓϩμΫτɻ1MBZ͔Β࣮ݧతʹ૊Έ ࠐ·Ε͍ͯΔɻࠓޙ͸/FUUZΛࣺͯΔ͜ͱʹͳΔɻ

"LLBͷओͳϓϩμΫτ w BLLBQFSTJTUFODF w εςʔτϑϧΞΫλʔͷ಺෦ঢ়ଶΛӬଓԽ͢ΔػೳɻΞΫλʔͷॳظ Խ࣌΍ྫ֎ʹΑΔ࠶ىಈ࣌ɺ+7.ͷΫϥογϡ࣌ʹҎલͷঢ়ଶΛ෮ݩ ͢Δ͜ͱ͕Ͱ͖Δɻ w BLLBQFSTJTUFODFRVFSZ
w ඇಉظετϦʔϜϕʔεͷΫΤϦ*'ʹΑͬͯఏڙ͞ΕΔΫΤϦʔί ϯϙʔωϯτɻ w BLLBTUSFBN w ΞΫλʔΛ࿈݁ͤͯ͞ඇಉظετϦʔϜॲཧΛ͢ΔͨΊͷ1JQFBOE 'JMUFSΛ࡞Δ͜ͱ͕Ͱ͖Δ͕ɺ҆ఆͨ͠ετϦʔϛϯάॲཧΛ͢Δʹ ͸ɺΤϥʔϋϯυϦϯάΛߦͬͨΓɺ͋Δϓϩηε্ͷόοϑΝ΍ ϝʔϧϘοΫε͕Φʔόʔϑϩʔ͠ͳ͍Α͏ʹ͢Δ CBDLQSFTTVSF ඞཁ͕͋Δɻ੩తܕͳཁૉΛѻ͏ετϦʔϜͰΞΫλʔ͸഑ઢϛεΛ ๷ࢭ͢Δ੩తܕ෇͚Λอূ͢Δํ๏͕ͳ͍ɻBLLBTUSFBN͸͜ΕΒͷ ໰୊Λղܾ͢Δɻ

ϦΞΫςΟϒγεςϜ ͷߏ੒ཁૉ

ଈԠੑ 3FTQPOTJWF w Ϣʔβͷཁٻʹରͯ͠଎΍͔ʹ൓Ԡ͢Δ΂͖ͱ͍͏ߟ͑ํɻͨ ͱ͑ɺಉ࣌ʹෳ਺ͷϢʔβʹΑΔɺॏͳΓ߹͏ϦΞϧλΠϜͳ ߋ৽Ͱ͋ͬͯ΋ɻԠ౴ੑ͸ো֐ʹ௚໘ͯ͠΋ҡ࣋͞ΕΔ΂͖ɻ w γεςϜ಺෦Ͱมߋ͕ى͖ͨ࣌ɺ1VC4VCϞσϧʹΑͬͯؔ৺ ͷ͋Δมߋͷू߹Λ఻ൖ͢Δ͜ͱͰ࣮ݱɻΠϕϯτετϦʔϜ ΍(6*ϞσϧɺͦͷଞγεςϜϞσϧͳͲʹར༻͞ΕΔɻ
"DUPS &WFOU#VT SFDFJWF "DUPS SFDFJWF BDUPS3FGNTH BDUPS3FGNTH "DUPS SFDFJWF BDUPS3FGNTH

':*଱ো֐ੑͷલʹ·ͣzιϑτ΢ΣΞͷࡂ͍Λද͢༻ޠz w ޡࠩɾޡΓ FSSPS w ܭࢉɼ؍ଌए͘͠͸ଌఆ͞Εͨ஋ຢ͸ঢ়ଶͱɼ ਅͷɼࢦఆ͞Εͨए͘͠͸ཧ࿦తʹਖ਼͍͠஋ ຢ͸ঢ়ଶͱͷؒͷ૬ҧ +*49
w ܽؕ EFGFDU όάΛؚΉ֓೦ w ҙਤͨ͠ৼΔ෣͍͔ΒγεςϜ͕ҳΕͯ͠· ͏ݪҼͱͳΔιϑτ΢ΣΞγεςϜͷಛੑͰ ͋Δ ΦϒδΣΫτࢦ޲ೖ໳ୈ̎൛ݪଇɾί ϯηϓτܖ໿ϓϩάϥϛϯά w ো֐ GBVMU ˠ"LLB͸GBVMUUPMFSBODF w ཁٻ͞ΕͨػೳΛ਱ߦ͢Δػೳ୯Ґͷೳྗͷɼ ॖୀຢ͸૕ࣦΛҾ͖ى͜͢ɼҟৗͳঢ়ଶ +*4 9 w ނো GBJMVSF w ཁٻ͞ΕͨػೳΛ਱ߦ͢Δɼػೳ୯Ґͷ ೳྗ͕ͳ͘ͳΔ͜ͱ +*49 Ұൠతͳ࿈࠯ϑϩʔ ނো ޡࠩɾޡΓ ো֐ ܽؕ ނো

ώΤϥϧΩʔ ଱ো֐ੑ 3FTJMJFOU w ͦΕ͸Ұ౓΋ো֐Λى͜͞ͳ ͍ɺ׬શͳΞϓϦέʔγϣϯ ιϑτ΢ΣΞΛ࣮૷͢Δ͜ͱ Ͱ͸ͳ͍ɻো֐͔Βճ෮͢Δ ͨΊͷೳྗΛσβΠϯ͢Δɻ w
ϦΞΫςΟϒγεςϜͰ͸ɺ ԼҐͷίϯϙʔωϯτ্ͷεʔ ύόΠβͱର࿩͢Δ͜ͱͰো ֐ʹඋ͑ΔɻεʔύʔόΠβ ͸ɺ؂ಜԼʹ͋Δίϯϙʔω ϯτͷো֐ʹ൓Ԡ͢ΔػձΛ ༩͑ΒΕΔɻ "DUPS 4VQFSWJTPS ো֐ͷൃੜ "DUPS ؂ಜऀͷࢦࣔ ܖ໿ҧ൓࣌͸ΤϥʔΛฦ͢ SFR SFT

଱ো֐ੑ 3FTJMJFOU w ো֐ൃੜ࣌ʹɺԼҐίϯϙʔ ωϯτΛఀࢭͨ͠Γɺ࠶ىಈ ͨ͠Γɺແࢹͯ͠ܧଓͨ͠Γ Ͱ͖Δɻ·ͨɺ͞Βʹ্Ґͷ εʔύόΠβνΣΠϯʹো֐ ௨஌ΛΤεΧϨʔτ͢Δ͜ͱ ΋Ͱ͖Δɻ
w ͜ͷΞϓϩʔνͰো֐͕ൃੜ ͨ͠ྖҬΛ෼཭͠ɺଞͷؔ܎ ͠ͳ͍ଟ͘ͷྖҬΛอޢ͢Δ ͜ͱ͕Ͱ͖Δɻ͜ΕΒΛশ͠ ͯࣗݾճ෮ྗͱ͍͏ɻ "DUPS 4VQFSWJTPS ো֐ൃੜ ྫ֎௨஌ 4VQFSWJTPS ྫ֎ͷΤεΧϨʔτ ఀࢭ ࠶ىಈ ܧଓ ఀࢭ ࠶ىಈ ܧଓ "DUPS "DUPS "DUPS "DUPS "DUPS ࠶ىಈ࣌͸ೖସ

஄ྗੑ &MBTUJD w εέʔϥϏϦςΟʹ͸ɺਨ௚ͱਫ ฏ͕͋ΔɻͲͪΒ͔Ұํ΋͘͠ ͸྆ํಉ࣌ʹ࢖͏͜ͱ͕Ͱ͖Δɻ ஄ྗੑͱ͸ཁٻʹԠͨ͡εέʔ ϦϯάઓུɻΦϑϐʔΫ࣌͸ແବ ʹϦιʔεΛར༻͠ͳ͍ͳͲɻ w
ϝοηʔδۦಈʹΑͬͯɺίϯ ϙʔωϯτ͸ඞཁʹԠͯ͡ಁա తʹϩʔΧϧϊʔυ΋ϦϞʔτ ϊʔυ΋ར༻Ͱ͖ΔɻҐஔಁա ੑͷ͋ΔίϯϙʔωϯτΛར༻ Ͱ͖Δɻίϯϙʔωϯτͷϝο ηʔδۦಈͱҐஔಁաੑͷ྆ํ Ͱ஄ྗੑΛ࣮ݱ͢Δɻ /PEF DPSF UISFBE DPSF UISFBE DPSF UISFBE DPSF UISFBE "DUPS "DUPS "DUPS "DUPS /PEF "DUPS /PEF "DUPS /PEF "DUPS .FTTBHF *UXJMMCFTFOUBNFTTBHFCZVTJOH"DUPS3FG 4DBMJOHVQ 4DBMJOHPVU 4DBMJOHPVU 4DBMJOHPVU 4DBMJOHPVU 4DBMJOHPVU

ϝοηʔδۦಈ .FTTBHF%SJWFO w ϝοηʔδΛड৴ͯ͠ॳΊͯɺར༻ՄೳͳεϨουΛ࢖ͬͯ൓Ԡ͢Δɻϝοηʔδʹ൓ Ԡ͠ͳ͍ίϯϙʔωϯτ͸وॏͳ$16ࢿݯΛফඅ͠ͳ͍ɻ w ϝοηʔδʹ൓Ԡ͢Δ͔Ͳ͏͔͸ίϯϙʔωϯτ͕બ୒Ͱ͖ɺى͖ಘΔϝοηʔδʹඋ ͑Δ͜ͱ͕Ͱ͖Δɻ͜ΕʹΑͬͯɺૹ৴ଆͱड৴ଆͷίϯϙʔωϯτ͸ɺΠϯλʔϑΣ Πεͱ͔࣌ؒΒ෼཭͞ΕΔ γϟʔσΟϯά
ӬଓԽΞΫλʔͰ͸෺ཧతۭؒ΋෼཭͞Ε Δ ɻ w ϝοηʔδ͸ඇಉظʹૹ৴͞Είϯϙʔωϯτ͸Ұ౓ʹܾ·ͬͨ୯ҐͷϝοηʔδΛॲ ཧ͢Δɻ$16Λසൟʹফඅ͢ΔϙʔϦϯάͱϒϩοΩϯάΛ࠾༻ͤͣɺߴεϧʔϓοτ ʹϑΥʔΧε͢ΔͨΊʹ$16Λղ์͢ΔɻඞཁʹԠͨ͡൓Ԡ͕௿ϨΠςϯγʔΛಋ͘ɻ ඞཁʹԠͯ͡όοΫϓϨογϟʹΑΔϑϩʔ੍ޚ΋Մೳ "DUPS "DUPS DMBTT5PEP"HHSFHBUFFYUFOET"DUPS\ PWFSSJEFEFGSFDFJWF3FDFJWF\  ࠷ޙʹॲཧͨ͠ίϚϯυ*%ΑΓ େ͖͘ͳ͍ͱॲཧ͠ͳ͍ ܖ໿ͷදݱ DBTFSFR$SFBUF5PEPJGDNEJEMBTU*E Ϩεϙϯε΋ඇಉظʹฦ͞ΕΔ ੒ޭ $SFBUF5PEP4VDDFFEFE Λฦ͢ TFOEFS DSFBUF5PEP SFR DBTFDNE$SFBUF5PEPJGDNEJEMBTU*E TFOEFS $SFBUF5PEP&SSPS ʜ ΤϥʔΛฦ͢ ^ PWFSSJEFEFGSFDFJWF3FDFJWF\  DBTFSFRʜ UPEP"HHSFHBUF$SFBUF5PEP ʜ 'JSFBOE'PSHFU ൃՐͨ͠Β͙͢ʹ๨ΕΔ DBTFSFT$SFBUF5PEP4VDDFFEFE Ϩεϙϯε͕͖ͨΒ൓Ԡ͢Δ  ^

BLLBBDUPS BLLBTUSFBN BLLBIUUQ ͓·͚ ΛΑΓৄ͘͠Έ͍ͯ͘

BLLBBDUPS

BLLBBDUPSͷྫ class MyActor extends Actor {  val log = Logging(context.system,
this)    def receive = {  case n: Int => log.info("received {}", n)  case msg: String => sender() ! "***" + msg + "***"  case _ => log.info("received unknown message")  }  }    implicit val system = ActorSystem()    val props1 = Props[MyActor]    val actorRef = system.actorOf(props1)    actorRef ! 1    val future = (actorRef ? "HelloWorld").mapTo[String]  val result = Await.result(future, Duration.Inf)  println(result)    actorRef ! 1L 'JSFBOE'PSHFU͸౤͛ͬͺͳ͠ɻϝιο υίʔϧʹ૬౰͢Δϝοηʔδ͸ΞΫλʔ ͕ड͚ೖΕΔ͔Ͳ͏͔ΛܾΊ͍ͯΔɻ໭ Γ஋͸࣌ؒతͳ੍໿͕ͳ͍ɻϝοηʔδ ͸TFOEFSʹฦ౴Λฦ͞ͳ͍XBZͱTFOEFS ʹฦ౴Λฦ͢XBZ͕͋Δɻ

"DUPSͷҐஔಁաੑ w ैདྷͷख๏Ͱ͸ɺεέʔϧΞοϓઓུͷͨΊʹϚϧνεϨου ΛɺεέʔϧΞ΢τઓུͷͨΊʹ31$Λར༻͢ΔͨΊɺϓϩά ϥϜίʔυ͸ந৅ԽͰ͖ͳ͍ɻ࣮૷͕ෳࡶԽ͢ΔҰͭͷཁҼɻ w "DUPS3FG͸"DUPS΁ͷΞυϨεΛදݱ͠ɺϩʔΧϧͰ͋ͬͯ΋ ϦϞʔτͰ͋ͬͯ΋։ൃऀ͕ҙࣝͤͣʹར༻Ͱ͖Δɻ /PEF" 3FDFJWFS"
4FOEFS BDUPS3FG /PEF" 4FOEFS BDUPS3FG /PEF# 3FDFJWFS# ϩʔΧϧ഑ૹ ϦϞʔτ഑ૹ BLLBSFNPUF ϩʔΧϧͰ΋ϦϞʔτͰ΋ಉ͡"1*  UPEP"HHSFHBUF$SFBUF5PEP ʜ

"DUPS4ZTUFNͱώΤϥϧΩʔ w ࠷ॳʹ"DUPS4ZTUFN͕࡞ΒΕΔɻ"DUPS4ZTUFNΛ࢖ͬͯ4VQFSWJTPSΛ࡞ Δɻ4VQFSWJTPS͕ࢠΞΫλʔΛ࡞Δ͜ͱͰώΤϥϧΩʔΛߏங͢Δɻ w ࣮ࡍʹ͸ɺΞϓϦέʔγϣϯ༻ͷΞΫλʔ͸VTFSHVBSEJBO഑Լʹॴଐ ͢Δɻ "DUPS4ZTUFN l0SEFS4ZTUFNz 4VQFSWJTPS
1SPEVDUT 1SPEVDU 6TFST 6TFS 0SEFST 0SEFS "QQMJDBUJPO

4VQFSWJTPSͷ࣮ྫ

4VQFSWJTPSΛ࣮૷͢Δ class Supervisor(childProps: Props) extends Actor {    override val
supervisorStrategy = OneForOneStrategy() {  case _: NumberFormatException => Restart  case _: IllegalArgumentException => Stop  case _: Exception => Escalate  }    val child = context.actorOf(childProps, "child")    override def receive: Receive = {  case msg => child forward msg  }  }  4VQFSWJTPS͕ड৴ͨ͠ϝοηʔδ͸ࢠΞΫλʔʹసૹ͢Δɻ TFOEFSΛม͑ͳ͍ɻ  ਺஋ม׵Ͱ͖ͳ͍৔߹͸3FTUBSU ෆਖ਼ͳೖྗ৚݅ͳΒ&TDBMBUF ͢ΔɺεʔύόΠβετϥςδΛ૊ΈࠐΉɻ4VQFSWJTPS͸ྫ֎ Λड͚औΔͱো֐Λִ཭͢Δɻ

ࢠΞΫλʔΛ࣮૷͢Δ case class ToInt(value: String)  case class IntValue(value: Int)   
class MyActor extends Actor {  val log = Logging(context.system, this)    @scala.throws[Exception](classOf[Exception])  override def preStart(): Unit = {  log.info("child start")  super.preStart()  }    def receive = {  case ToInt(v) =>  require(v.length > 0)  sender() ! IntValue(v.toInt)  case _ =>  }    @scala.throws[Exception](classOf[Exception])  override def postStop(): Unit = {  log.info("child stop")  super.postStop()  }    } ࢠΞΫλʔͰ͸جຊతʹྫ֎ΛϋϯυϦ ϯά͠ͳ͍ɻਖ਼ৗܥͷΈͷ࣮૷ͰΑ͍ɻ TFOEFS ͸4VQFSWJTPSͰ͸ͳ͍ΦϦδφ ϧɻ

4VQFSWJTPSܦ༝Ͱ࣮ߦ͢Δ implicit val system = ActorSystem()  val childProps = Props[ToIntActor] 
val props = Supervisor.props(childProps)    val toIntActorRef = system.actorOf(props)    Seq("1", "a", "2", "").foreach{ s =>  try {  val future = (toIntActorRef ? ToInt(s)).mapTo[IntValue]  val result = Await.result(future, Duration.Inf)  println(s"value = $s, result = $result")  } catch {  case ex: Exception =>  ex.printStackTrace()  }  } ظ଴͢Δɺظ଴͠ͳ͍ɺೖྗ஋Λ౉ͯ͠ΈΔɻ

[INFO][akka://default/user/$a/child] child start   // 1ճ໨͸੒ޭɻ value = 1, result
= IntValue(1) // 2ճ໨͸ࣦഊɻ࠶ىಈ͕͔͔Δɻ [ERROR][akka://default/user/$a/child] For input string: “a" java.lang.NumberFormatException: For input string: "a" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) [INFO][akka://default/user/$a/child] child stop [INFO][akka://default/user/$a/child] child start akka.pattern.AskTimeoutException: …   // 3ճ໨͸੒ޭ value = 2, result = IntValue(2) // 4ճ໨͸ࣦഊɻΞΫλʔ͕ఀࢭ͢Δ [ERROR][akka://default/user/$a/child] requirement failed java.lang.IllegalArgumentException: requirement failed at scala.Predef$.require(Predef.scala:212) [INFO][akka://default/user/$a/child] child stop akka.pattern.AskTimeoutException: … ࣮ߦ݁Ռ "DUPSΠϯελϯε͸࠶ىಈ͕ͨ͠"DUPS3FG͸ͦͷ· ·ར༻Մೳɻ௨ৗͷΦϒδΣΫτࢀরͰ͸ΦϒδΣΫ τάϥϑͷೖΕସ͕͑ߴίετʹͳΔ͜ͱ͕͋Δɻ

':*εʔύϏδϣϯώΤϥϧΩʔ w εʔύόΠβͷϥΠϑλΠϜ͸ɺࢠΞΫλʔ ͕ଘࡏ͢Δؒͱಉ͡ɻ਌ʹΑͬͯ࡞ΒΕͨ ࢠΞΫλʔ͸ɺεʔύόΠβͷ؂ಜԼʹ ஔ͔ΕΔɻεʔύόΠβͷ੹೚͸͢΂ͯ ͷࢠΞΫλʔ͕ऴྃͨ࣌͠ʹऴΘΔɻ w Ϋϥογϡ͢ΔՄೳੑ͕ߴ͍ΞΫλʔ͸ɺ
ՄೳͳݶΓώΤϥϧΩʔͷԼ૚ʹ഑ஔ͢ ΂͖ɻԼ૚Ͱى͖ͨো֐͸ɺ্Ґ·Ͱͷ ώΤϥϧΩʔ͕؅ཧɾΤεΧϨʔγϣϯ ͕Մೳɻ࠷্Ґ͕ো֐Λىͨ͜͠৔߹ ͸ɺ࠷্ҐͷΞΫλʔͷ࠶ىಈ΋͘͠͸ ΞΫλʔγεςϜͷγϟοτμ΢ϯ͕ඞཁ ʹͳΔɻ 4VQFSWJTPS 4VQFSWJTPS 4VQFSWJTPS $IJME $IJME 4VQFSWJTPS $IJME $IJME $IJME $IJME $IJME

':*εʔύϏδϣϯώΤϥϧΩʔ w ར఺͸ɺ֤ΞΫλʔ͕૬ޓ ʹ௚઀௨৴͢Δ͜ͱɻεʔ ύόΠβ͸؂ಜۀ຿ͱΠϯ ελϯε࡞੒ͷΈɻ w ܽ఺͸ɺ࠶ىಈ͔͠࢖͑ͳ ͍͜ͱͱɺϝοηʔδ͕σο
υϨλʔʹૹΒΕࣦͯΘΕ ͯ͠·͏͜ͱɻ਌ͷ؂ಜ͸ ϝοηʔδϑϩʔ͔Β؂ಜ Λ෼཭ͯ͠͠·͏ɻ -PH'JMF8BUIDFS 4VQFSWJTPS -PH1SPDDFTTPS 4VQFSWJTPS 3PX -PH'JMF /FX'JMF %BUBCBTF -PH1SPDDFTTPS %C8SJUFS -PH'JMF8BUIDFS %C8SJUFS 4VQFSWJTPS ώΤϥϧΩʔͷҧ͏-PH1SPDDFTTPSͷ "DUPS3FGΛಘΔͷ͸೉͍͠

':*εʔύϏδϣϯώΤϥϧΩʔ w εʔύόΠβ͸୯ͳΔੜ੒ ΍؂ಜͰ͸ͳ͘ɺؒ઀ࢀর ͱͯ͠ɺ͢΂ͯͷϝοηʔ δΛ୯ʹಁաతʹϑΥϫʔ υ͢ΔɻεʔύόΠβ͸ࢠ Λऴྃͨ͠ΓɺଞͷΞΫλʔ ͱ͸ແؔ܎ʹ৽͍͠΋ͷΛ
ੜΈग़ͨ͠ΓͰ͖Δɻ w ઌͷྫͱൺ΂ͯϝοηʔδ ϑϩʔͷΪϟοϓ͕ͳ͍ɻ -PH'JMF8BUIDFS4VQFSWJTPS -PH1SPDDFTTPS4VQFSWJTPS 3PX -PH'JMF /FX'JMF %BUBCBTF -PH1SPDDFTTPS %C8SJUFS -PH'JMF8BUIDFS %C8SJUFS4VQFSWJTPS

%JTQBUDIFS.BJMCPY w %JTQBUDIFS͸.BJMCPYʹ*NNVUBCMFͳϝοηʔδΛ௥Ճ͢Δ 4IBSE/PUIJOH ɻ"DUPS͸ .BJMCPYΛܦ༝ͯ͠ϝοηʔδΛॱ൪ʹऔಘ͢Δɻ։ൃऀ͸%JTQBUDIFS͕ར༻͢ΔεϨουΛ ҙࣝ͠ͳ͍ɻܾ·ͬͨ୯ҐͷϝοηʔδΛॲཧ͍ͯ͠Δࡍத͸ɺผͷϝοηʔδΛॲཧ͠ͳ͍ ͷͰɺඇಉظڥքΛҙ͍ࣝͯ͠Ε͹ɺಉҰΞΫλʔ಺Ͱ͸γϯάϧεϨουͷΑ͏ʹݟ͑Δɻ w "DUPS਺෼ͷεϨου਺͕ඞཁʹͳΔΘ͚Ͱ͸ͳ͍ɻϥΠτ΢ΣΠτɻඦສ"DUPS͸(#ఔ
౓ɻεϨουϞσϧͰ͸(#εϨουఔ౓ͱߟ͑Δͱେ͖ͳ͕ࠩ͋Δɻ w %JTQBUDIFS΍.BJMCPY͸ඞཁʹԠͯ͡ద੾ͳछྨͱઃఆΛબͿ͜ͱͰνϡʔχϯά͕Մೳɻ "DUPS .BJMCPY . . %JTQBUDIFS . "DUPS .BJMCPY . . %JTQBUDIFS . "DUPS .BJMCPY 9 9 9 %JTQBUDIFS͕ .BJMCPYʹϝο ηʔδΛ௥Ճ͢Δ 5ISFBE 5ISFBE ্ͰϝοηʔδΛ௥ Ճɻ "DUPS͸.BJMCPY ͔Βॱ൪ʹऔಘ͢ Δɻ 5ISFBE 5ISFBE ্ͰϝοηʔδΛ௥ Ճɻ

BLLBTUSFBN

σʔλϑϩʔͷൺֱ val result = (1 to 3).view  .map { i
=> print(s"A: $i -> "); i }  .map { i => print(s"B: $i -> "); i }  .foldLeft(Seq.empty[Int])(_ :+ _)  println(result) ਖ਼֨ίϨΫγϣϯ """###-JTU ඇਖ਼֨ίϨΫγϣϯ "#"#"#-JTU "LLB4USFBN "#"#"#7FDUPS val future = Source(1 to 3)  .map { i => print(s"A: $i -> "); i }  .map { i => print(s"B: $i -> "); i }  .runWith(Sink.seq)  println(Await.result(future, Duration.Inf)) "LLB4USFBN൛ ඪ४ίϨΫγϣϯ൛ ඇਖ਼֨ͷΑ͏ͳৼΔ෣͍ʹͳΔ͕ɺ ॲཧॱংʹґଘ͢ΔίʔυΛॻ͘ ΂͖Ͱ͸ͳ͍ɻࢀরಁ໌ͳؔ਺Ͱ هड़͢Δɻ

BLLBTUSFBNͷجຊ֓೦ w 3FBDUJWF4USFBNTʹ४ڌͨ͠"LLBͷ࣮૷ɻ w ऴΘΓͷͳ͍ཁૉͷྻͱͯ͠ͷ4USFBNͷσʔλΛ1SPDFEVFS $POTVNFSύλʔϯͰॲཧ͢Δɻ w σʔλྔ͕๲େͰ༧ଌ͕͔ͭͳ͍৔߹ʹద͓ͯ͠Γɺσʔλϑϩʔ ্ͷόοϑΝ͕Φʔόϑϩʔ໰୊ʹ΋ରԠͰ͖Δɻ$POTVNFS͕σʔ
λϑϩʔʹ௥ैͰ͖͍ͯΔ͔1SPEVDFS͕ͲͷΑ͏ʹݕ஌Ͱ͖Δͷ͔ ͕՝୊ɻ 3VOOBCMF(SBQI 4PVSDF PVUQVU 4JOL JOQVU 4PVSDF 4JOL

ϑΝΠϧίϐʔͷྫ val inputFile = Paths.get(args(0))  val outputFile = Paths.get(args(1))  
// ࢦఆͨ͠ύε͔ΒϑΝΠϧΛಡΈByteStringͱͯ͠ग़ྗ͢ΔSource  val source: Source[ByteString, Future[IOResult]] = FileIO.fromPath(inputFile)    // ByteStringͷೖྗΛड͚औΓɺࢦఆͨ͠ύεʹग़ྗ͢ΔSink  val sink: Sink[ByteString, Future[IOResult]] = FileIO.toPath(outputFile, Set(CREATE, WRITE, APPEND))   // SourceͱSinkΛ݁߹࣮ͯ͠ߦՄೳͳάϥϑΛੜ੒͢Δ  val runnableGraph: RunnableGraph[Future[IOResult]] = source.to(sink)    implicit val system = ActorSystem()  implicit val ec = system.dispatcher  implicit val materializer = ActorMaterializer()    // ࣮ߦՄೳͳάϥϑΛ࣮ߦ͢Δɻ  runnableGraph.run().foreach { result =>  println(s"${result.status}, ${result.count} bytes read.")  system.terminate()  }

"DUPS.BUFSJBMJ[FS w "DUPS൛ͷ.BUFSJBMJ[FS͸ɺ3VOOBCMF(SBQIΛ࣮ߦ͢Δ"DUPSʹม׵͢Δɻͨͩ͠ɺ BLLBSFNPUFʹ͸ରԠ͍ͯ͠ͳ͍ɻϩʔΧϧϊʔυ಺ͷΈͷαϙʔτɻ w 'JMF1VCMJTIFS͸ऴΘΓ͕དྷΔ·ͰϑΝΠϧ͔Β#ZUF4USJOHΛಡΉɻ w 'JMF4VCTDSJCFS͸'JMF1VCMJTIFS͔Βड͚औͬͨ#ZUF4USJOHΛϑΝΠϧʹॻ͖ࠐΉɻ w 'JMF1VCMJTIFS͕͢΂ͯͷϑΝΠϧΛಡΜͩΒ'JMF4VCTDSJCFSʹ0O$PNQMFUFΛૹͬ
ͯఀࢭ͢Δɻ w 'JMF4VCTDSJCFS͕0O$PNQMFUFΛड͚औͬͨΒΦʔϓϯ͍ͯ͠Δ'JMF$IBOOFMΛด͡ ͯఀࢭ͢Δɻ 3VOOBCMF(SBQI 4PVSDF 4JOL 'JMF1VCMJTIFS 'JMF4VCTDSJCF 'JMF$IBOOFM 'JMF$IBOOFM 'JMF4PVSDF͔Β 4PVSDFΛฦ͢ 'JMF4JOL͔Β4JOLΛฦ ͢ 'JMF4PVSDF͕ 'JMF1VCMJTIFS "D UPS Λੜ੒͢Δ 'JMF4JOL͕ 'JMF4VCTDSJCFS "DU PS Λੜ੒͢Δ 'JMF1VCMJTIFS͕ 'JMF$IBOOFMΛੜ ੒͢Δ 'JMF4VCTDSJCFS͕ 'JMF$IBOOFMΛੜ੒ ͢Δ "DUPS.BUFSJBMJ[FS 4VCTDSJQUJPO

#BDL1SFTTVSF w 4VCTDSJCFS͕ॲཧ͠੾Εͳ͍΄ͲͷλεΫΛ1VCMJTIFS͕ૹΔͱɺ .BJMCPY͕Φʔόʔϑϩʔ͢ΔͨΊɺ4VCTDSJCFS͔Βཁٻ͕͋ͬͨ ෼͚ͩΛૹΔΑ͏ʹ͢Δɻ͜ΕΛ#BDL1SFTTVSF എѹ੍ޚ ͱ͍͏ɻ ϑϩʔ੍ޚͷҰछɻ w ͨͱ͑͹ɺ'JMF4VCTDSJCFS͕ཁૉΛॲཧͰ͖ΔͳΒ'JMF4VCTDSJCFS
͕'JMF1VCMJTIFSʹ3FRVFTUϝοηʔδΛૹΔɻ'JMF1VCMJTIFS͸ಡΈ ࠐ·Εͨཁૉͷ#ZUF4USJOHΛ'JMF4VCTDSJCFSʹૹΔɻ 'JMF1VCMJTIFS 'JMF4VCTDSJCFS 'JMF$IBOOFM 'JMF$IBOOFM 3FRVFTU PO/FYU CZUFT 3FBE 8SJUF

4PVSDFʹ΋4JOLʹ΋߹੒Ͱ͖Δ'MPX w 3FBDUJWF4USFBNTʹ४ڌͨ͠"LLBͷ࣮૷ɻ w ऴΘΓͷͳ͍ཁૉͷྻͱͯ͠ͷ4USFBNͷσʔλΛ1SPDFEVFS $POTVNFSύλʔϯͰॲ ཧ͢Δɻ w σʔλྔ͕๲େͰ༧ଌ͕͔ͭͳ͍৔߹ʹద͓ͯ͠Γɺσʔλϑϩʔ্ͷόοϑΝ͕Φʔ όϑϩʔ໰୊ʹ΋ରԠͰ͖Δɻ$POTVNFS͕σʔλϑϩʔʹ͍͖͍ͭͯͯΔ͔
1SPEVDFS͕ͲͷΑ͏ʹ೺ѲͰ͖Δͷ͔ɻ 4PVSDF DPOOFDU 'MPX PVUQVU 4PVSDF 'MPX PVUQVU 'MPX 'MPX 4JOL 4JOL JOQVU DPOOFDU JOQVU 4PVSDF 'MPX 4JOL DPOOFDU DPOOFDU

؆୯ͳ'MPXͷྫͱ.BUFSJBMJ[FE7BMVF val future = Source(1 to 10)  .via(Flow[Int].map(_ * 2)) 
.toMat(Sink.seq)(Keep.right).run()    // ҎԼͱಉ͡ҙຯ // val future = Source(1 to 10)  // .map(_ * 2)  // .runWith(Sink.seq)  3VOOBCMF(SBQI 4PVSDF 4JOL WBMTPVSDF4PVSDF<*OU /PU6TFE> 4PVSDF UP WBMTJOL4JOL</PUIJOH 'VUVSF<4FR<*OU>>> 4JOLTFR<*OU> UP.BU 4JOLTFR ,FFQSJHIU ͱͨ͠৔߹͸ӈଆͷ .BUFSJBMJ[FE7BMVFΛऔಘ͢Δ ,FFQMFGU͸ /PU6TFE ,FFQCPUIͱ͢Δ͜ͱ΋Մೳ .BUFSJBMJ[FE7BMVFͱ͸4PVSDF΍ 4JOL͕ఏڙ͢Δิॿ஋ɻܭࢉʹؔ ࿈͢Δ஋΍ɺ݁ՌΛؚΉ஋ͳͲɻ ϑΝΠϧίϐʔͷྫͰ͸ 'VUVSF<*03FTVMU>ɺ͜ͷྫͰ͸ 'VUVSF<4FR<*OU>>ͱͳΔɻ

([JQ$PNQSFTT'MPX class GzipCompressorStage extends GraphStage[FlowShape[ByteString, ByteString]] {  val compressor =
new GzipCompressor()  val in: Inlet[ByteString] = Inlet("GzipCompressorStage")  val out: Outlet[ByteString] = Outlet("GzipCompressorStage")    override def shape: FlowShape[ByteString, ByteString] = FlowShape(in, out)    @scala.throws[Exception](classOf[Exception])  override def createLogic(inheritedAttributes: Attributes) = new GraphStageLogic(shape) {  setHandler(in, new InHandler { // ্ྲྀ͔ΒͷByteStringΛѹॖͯ͠Լྲྀʹྲྀ͢  @scala.throws[Exception](classOf[Exception])  override def onPush(): Unit =   push(out, compressor.compressAndFlush(grab(in)))  // ্ྲྀ͕ऴྃͨ͠Β࠷ޙͷByteStringΛѹॖͯ͠Լྲྀʹྲྀ͢  @scala.throws[Exception](classOf[Exception])  override def onUpstreamFinish(): Unit = { push(out, compressor.finish()); super.onUpstreamFinish() }  })  setHandler(out, new OutHandler {  override def onPull(): Unit = {  pull(in)  }  })  }  } (SBQI4UBHFΛ࢖͏ͱෳࡶͳ 4PVSDF 'MPX 4JOL͕ఆٛͰ͖Δ Χ ελϜεςʔδ ɻάϥϑͷߏஙఔ ౓ͳΒ͹(SBQI%4-Ͱ΋هड़Մೳɻ

(;JQ$PNQSFTT'MPXΛ૊ΈࠐΉ val source: Source[ByteString, Future[IOResult]] =   FileIO.fromPath(inputFile)  // GzipCompresssorStageΛFlowͱͯ͠ఆٛ͢Δ 
val flow: Flow[ByteString, ByteString, NotUsed] =   Flow.fromGraph(new GzipCompressorStage())  // ByteStringͷೖྗΛड͚औΓɺࢦఆͨ͠ύεʹग़ྗ͢ΔSink  val sink: Sink[ByteString, Future[IOResult]] = FileIO.toPath(outputFile, Set(CREATE, WRITE, APPEND))  // SourceͱSinkΛ݁߹࣮ͯ͠ߦՄೳͳάϥϑΛੜ੒͢Δ  val runnableGraph: RunnableGraph[Future[IOResult]] = source.via(flow).to(sink) TDBMB'JMF$PQZ8JUI([JQ)FMMP8PSMEUYU)FMMP8PSMEUYUH[ HVO[JQ)FMMP8PSMEUYUH[D )FMMP8PSME ΧελϜεςʔδΛετϦʔϜʹ ૊ΈࠐΉ৔߹͸GSPN(SBQIϝιο υΛ࢖͏ɻ

(SBQI%4-ͷྫ val g = RunnableGraph.fromGraph(GraphDSL.create() { implicit builder: GraphDSL.Builder[NotUsed] => 
  import GraphDSL.Implicits._  val in = Source(1 to 10)  val out = Sink.ignore    val bcast = builder.add(Broadcast[Int](2))  val merge = builder.add(Merge[Int](2))    val f1, f2, f3, f4 = Flow[Int].map(_ + 10)    in ~> f1 ~> bcast ~> f2 ~> merge ~> f3 ~> out  bcast ~> f4 ~> merge  ClosedShape  })

"DUPSͱͷΠϯςάϨʔγϣϯ val (actorRef, future) = Source.actorRef[Int](Int.MaxValue, OverflowStrategy.fail)  .map(_ * 2) 
.toMat(Sink.seq)(Keep.both).run()    for {n <- 1 to 10} {  actorRef ! n  }  actorRef ! Status.Success(1)    println(Await.result(future, Duration.Inf)) "DUPSΛ4PVSDFʹ͢Δ͜ͱ͕Մೳɻͨͩ͠CBDLQSFTTVSF͸ޮ͔ ͳ͍ͷͰɺͦͷ৔߹͸"DUPS1VCMJTIFSΛ࢖͏ͱΑ͍ɻ

BLLBIUUQ

BLLBIUUQαʔόଆͷىಈॲཧ object Main extends App with TodoWriteService with TodoReadService { 
  private implicit val system = ActorSystem("akka-http-sample")    override protected implicit val materializer = ActorMaterializer()    private implicit val executionContext = system.dispatcher    // …   private val route: Route = todoWriteRoute ~ todoReadRoute    private val bindingFuture = Http().bindAndHandle(route, "localhost", 8080)    sys.addShutdownHook {  bindingFuture  .map(_.unbind)  .onComplete(_ => system.terminate())  }    } BLLBIUUQࣗମ΋BLLBTUSFBNΛ࢖࣮ͬͯ૷͞Ε͍ͯΔɻجຊతʹ ͸)UUQCJOE"OE)BOEMFͳͲʹ3PVUFΛ౉͚ͩ͢ɻ

ίϯτϩʔϥ૬౰ͷϩδοΫ trait TodoWriteService extends Directives {    implicit val timeout
= Timeout(10 seconds)    protected val todoAggregateRef: ActorRef    val todoWriteRoute: Route = createTodo ~ updateTodo ~ deleteTodo    private val createTodo: Route = {  path("todos") {  post {  entity(as[CreateTodoRequestJson]) { requestBody =>  val commandId = UUID.randomUUID()  val todoId = TodoId(UUID.randomUUID())  val future = (todoAggregateRef ? Create(commandId, todoId, requestBody.text))  .mapTo[CreateSuccess]  onSuccess(future) { res =>  complete(CreateTodoResponseJson(res.id, res.aggregateId.value))  }  }  }  }  }    private val updateTodo: Route = ???  private val deleteTodo: Route = ???    } 3PVUJOH%4-ͰϧʔτΛهड़͢ΔɻΞΫλʔ ʹϝοηʔδύογϯά͠ɺͦͷ݁Ռ 'VUVSF ΛϨεϙϯεʹؚΊΔ͜ͱ͕Ͱ ͖Δɻ

BLLBIUUQ BLLBTUSFBNͷ૊Έ߹Θͤ trait TodoReadService extends Directives {    protected implicit
val materializer: Materializer    protected val todoDas: TodoDas    protected val todoReadRoute: Route = getTodoById ~ getTodos    private val getTodoById: Route = {  pathPrefix("todos" / JavaUUID) { id =>  get {  val future = todoDas.findById(TodoId(id)).runWith(Sink.head)  onSuccess(future) { res =>  complete( GetTodoResponseJson(res.id.value, res.text, res.createAt, res.updateAt) )  }  }  }  }    private val getTodos: Route = ???    } 3FBDUJWF4USFBNTʹରԠͨ͠4MJDLͷ 4PVSDF %BUBCBTF1VCMJTIFS Λ"LLB4USFBNͷάϥϑʹ ૊ΈࠐΉ͜ͱ͕Ͱ͖Δɻ

·ͱΊ w ߴ͍ඇػೳཁ͕݅໰ΘΕΔγεςϜͰ࢖͑ΔҰͭͷߟ͑ํɻ͔͠͠ɺ՝୊΋ଟ͍ͱࢥ͏ɻ w ՝୊ w ϦΞΫςΟϒγεςϜΛαϙʔτ͢ΔϑϨʔϜϫʔΫ΍ϥΠϒϥϦ͸·ͩա౉ظɻͨͿΜɺ"LLB ͔&SMBOH051 &MJYJSʹ͸"LLB4USFBN૬౰ͷػೳ͕௥Ճ͞Εͭͭ͋Δ ͙Β͍͔͠ͳͦ͞͏ɻ
w +7.্ݴޠͱͯ͠4DBMBΛֶͼͳ͕Β࢖͏͔ɺҰԠɺ"LLB͸+BWBͰ΋࢖͑·͢ʜ DBTF DMBTT͕ͳ͍ͷͰύλʔϯϚον͕ॻ͖ͮΒ͍ʁࣗલ࣮૷ͰؤுΔ͔͠ͳ͍ ɻ4QSJOH 3FBDUPSʹ͸4VQFSWJTJPO͕ͳ͍ʁ w ϝιουۦಈʹ׳Ε͗ͨ͢ΤϯδχΞʹͱͬͯ͸ɺϝοηʔδۦಈ͸೉͘͠ݟ͑Δ͔΋͠Εͳ ͍ɻ w "DUPSؒ͸ϝοηʔδۦಈͰ"DUPS಺෦͸ϝιουۦಈͰ࢖͍෼͚Δɻ w ҐஔಁաੑͷຊྖΛൃش͢Δʹ͸BLLBDMVTUFS TIBSEJOH BLLBQFSTJTUFODFΛಋೖ͢Δඞཁ͕ ͋Δ͕ɺωοτϫʔΫ෼அʹΑͬͯΫϥελʔ ͕෼அ͢ΔՄೳੑ͕͋Δ 4QMJU#SBJO w -#ࣾͷιϦϡʔγϣϯ΋͋Δ͕ʜɻγϯά ϧ";Ͱӡ༻ͨ͠ํ͕͍͍͔΋ɻ w ͦ΋ͦ΋"DUPSಉ࢜ͷઃܭΛͲ͏ͨ͠ΒΑ͍ͷ ͔ʁ w ӈͷຊΛಡΈ·͠ΐ͏

͓ΘΓ

リアクティブシステムの鼓動(Scala/Akka)

リアクティブシステムの鼓動(Scala/Akka)

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