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Web API サーバーとしての Elixir の可能性
Naoya Ito
August 28, 2015
Technology
56
9.8k
Web API サーバーとしての Elixir の可能性
API Meetup Tokyo #9 での発表資料です
Naoya Ito
August 28, 2015
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Transcript
8FC"1*αʔόʔͱͯ͠ͷ &MJYJSͷՄೳੑ /BPZB*UP ,BJ[FO1MBUGPSN *OD "1*.FFUVQ5PLZP
ࡢࠓ͜Μͳ͜ͱ͋Γ·ͤΜ͔ • ͨͩͷ+40/"1*ʹ3BJMTͰŋŋŋ – ϋΠτϥϑΟοΫͳҊ݅Ͱ͍ͮΒ͍ – ཁ݅ʹରͯ͠ϝϞϦϑοτϓϦϯτ͕େ͖͗͢ – ଓ͕ଟ͍ͱεέʔϧ͠ͳ͍
– োੑʹෆ҆ • ʮεύΠΫͨ͠ͷͰམͪ·ͨ͠ʯͰࡁ·͞Εͳ͍ɻࠂ αʔόʔͱ͔
,BJ[FO1MBUGPSNͰŋŋŋ • ҎԼͷέʔεͰ࣮ࡍʹ͋ͬͨ – ࠂ৴ͷ֎෦αʔόʔͱͷΓͱΓ • ଟྔͷଓ – 3FEJTͱ*0ͯ͠ฦ͢Δ͚ͩͷ"1*αʔόʔ •
ཁ݅γϯϓϧɻෳࡶͳ.PEFM7JFXཁΒͳ͍ • ͰεύΠΫͰམͱͨ͘͠ͳ͍ ͻͱ·ͣ/PEFKTͰ ରԠͨ͠
親 子 fork() ϚϧνϓϩηεϞσϧʹΑΔฒߦॲཧ ྫ3BJMTͷ࣮ߦڥ
1SPT$POT • 1SPT – ҆શ • ϦΫΤετ͝ͱʹϝϞϦۭؒ㱺Ϋϥογϡͯ͠ ଞʹӨڹ͠ͳ͍ – ϓϩάϥϛϯάϞσϧ͕୯७
ಉظͰ0, – ϚϧνίΞ • $POT – εέʔϥϏϦςΟʹ • ϝϞϦେ㱺࠷େϓϩηεಉ࣌ฒߦ্ݶ • 04ϓϩηεεϨουͷίϯςΩετεΠον
࣌ؒ A B A C D B ・・・ select() /
epoll() ίϯςΩετ εΠον ΠϕϯτۦಈϞσϧʹΑΔฒߦॲཧ ྫ&WFOU.BDIJOF /PEFKT
1SPT$POT • 1SPT – εέʔϥϏϦςΟ ߴ͍ฒߦॲཧੑೳ • ϝϞϦϑοτϓϦϯτখ͍͞ •
ಉ࣌ଓ͕૿͑ͯεέʔϧ • $POT – োੑʹ • མͪΔͱ͖શ෦མͪΔ • ϝϞϦϦʔΫ͜Θ͍ – ϓϩάϥϛϯάϞσϧ͕ෳࡶ˞/PEFKTͩͱͦΕ΄ͲͰͳ͍ – ϚϧνίΞ$16Λ͍ͮΒ͍
τϨʔυΦϑ • ฒߦॲཧੑೳՔ͛ͳ͍͕҆શͰ୯७ͳ Ϛϧνϓϩηε εϨου Ϟσϧ͔ • ฒߦॲཧੑೳ͕ߴ͍͕ӡ༻ʹؾΛݣ͏Πϕ ϯτۦಈϞσϧ͔ ͙͵͵ŋŋŋ
ͦ͜Ͱ&SMBOHͰ͢
&SMBOHͷ࣮ߦڥ • #&". &SMBOH7. – ܰྔϓϩηεŋŋŋ࣮ߦίϯςΩετ • খ͍͞ϫʔυɺىಈʹdϚΠΫϩඵ – ฒߦॲཧੑೳ͕ߴ͍ •
7.͕ܰྔϓϩηεΛεέδϡʔϦϯά – 7.εϨουຖʹϥϯΩϡʔ – ཪଆͰඇಉظεϨουϓʔϧ ref: h+p://www.erlang-‐factory.com/upload/presenta=ons/708/HitchhikersTouroEheBEAM.pdf
ΞΫλʔϞσϧ ϝοηʔδύογϯά ͯ͢ίϐʔ 4IBSFE/PUIJOH ϝʔϧϘοΫεʹ ΩϡʔΠϯά
&SMBOHͰͷ ωοτϫʔΫαʔόʔ • ϦΫΤετʹܰྔϓϩηε – ҆શ • ܰྔϓϩηεŋŋŋಠཱ࣮ͨ͠ߦίϯςΩετ • 4IBSFE/PUIJOHŋŋŋ͋Δϓϩηε͕Ϋϥογϡ ͯ͠ͳ͍
– ߴ͍ฒߦॲཧੑೳ • ܰྔŋŋŋϝϞϦϑοτϓϦϯτখ͍͞ • Ϣʔβʔϥϯυ04ͷίϯςΩετεΠονͳ ͠
&SMBOHͷϝϞϦϞσϧ • QFS1SPDFTT($ – ϓϩηεຖʹ($ • άϩʔόϧ($ͩͱશମʹӨڹ͢Δ • ϓϩηε –
4IBSFE/PUIJOH – ϓϩηε)FBQ • ($ܰྔϓϩηεຖʹΒͤɺཁΒͳ͘ͳͬͨΒഇغ ؆ ୯Ͱޮ͕Α͍ ҆ఆͨ͠Ԡੑೳ ߴ͍োੑ
4VQFSWJTPS Supervisor ϓϩηε ࢹ ʮಥવͷࢮʂʯ ϓϩηεࢮΜͩ͠ɺઓུ ʹ߹Θͤͯ࠶ىಈ͠ͱ͘ Θ crash
-FUJUDSBTI • ࣦഊʹඋ͑ͳ͍ɻྫ֎Λั·͑ͳ͍ • 4VQFSWJTPSͰࢹ͓͍ͯͯ͠ɺͦͷ· ·ى͜͢ͳΓύϥϝʔλม͑ͯϦτϥΠ͞ ͤΔͳΓŋŋŋ ނোରԠϞσϧ͕ ݴޠج൫Ͱఏڙ
/PEFKTWT&SMBOH • /PEFKTWT&SMBOH – IUUQLVFOJTIJIBUFOBEJBSZKQFOUSZ – ނোϞσϧɺίʔυมߋɺίʔυҠಈɺແఀࢭΞοϓάϨʔυɺ ͜͏͍͏ͷͬͯYͰμϯλΠϜͷγεςϜͩͱେࣄͩΑ Ͷɻ
+PF"SNTUSPOH – ݁ہੑೳΑΓނোੑͳΜͩΑͶᴷͦΕͳ
Ͱ&SMBOHͳΜͰ͠ΐ͏
ͦ͜Ͱ&MJYJS
&MJYJS • &SMBOH7.ͷ্Ͱಈ͘ݴޠ – &SMBOH7.ͷڧΈ ฒߦॲཧੑೳɺোੑ Λͦͷ··ʹɺγϯ λοΫεΛೃછΈ͘͢ • KPTFWBMJN&SMBOHͰݟͨ͜ͱΈΜͳؾʹೖ͚ͬͨͲɺݟͳ͔ͬͨ͜ͱ
ΈΜͳݏ͍ – &SMBOHͱ૬ޓޓ – 051ͪΖΜ͋ΔΑ • ϞμϯͳύοέʔδཧγεςϜɺ-B[ZίϨΫγϣϯ 4USFBN ɺ ϓϩτίϧͳͲͷՃཁૉ • ৄ͘͠ – IUUQTTQFBLFSEFDLDPNOBPZBFMJYJSHPTIBPKJF
None
Ͱ8FC"1*࡞Δͷ ͍͠ΜͰ͠ΐ͏
1IPFOJYᴷ&MJYJSPO3BJMT
None
1IPFOJY Cowboy Plug Phoenix .JEEMFXBSF )5514FSWFS &SMBOH1SPDFTT 3FFRVFTU
ϕϯνϚʔΫ ref: h+p://www.li+lelines.com/blog/2014/07/08/elixir-‐vs-‐ruby-‐showdown-‐phoenix-‐vs-‐rails/ $ ./wrk -‐t12 -‐c800 -‐d180S -‐-‐timeout 2000
"http://tranquil-‐brushlands-‐6459.herokuapp.com/showdown" Running 3m test @ http://tranquil-‐brushlands-‐6459.herokuapp.com/showdown 12 threads and 800 connections Thread Stats Avg Stdev Max +/-‐ Stdev Latency 318.52ms 139.92ms 1.39s 82.03% Req/Sec 224.42 57.23 368.00 68.50% 484444 requests in 3.00m, 0.99GB read Socket errors: connect 0, read 9, write 0, timeout 0 Requests/sec: 2691.03 Transfer/sec: 5.65MB $ ./wrk -‐t12 -‐c800 -‐d180S -‐-‐timeout 2000 "http://dry-‐ocean-‐9525.herokuapp.com/showdown" Running 3m test @ http://dry-‐ocean-‐9525.herokuapp.com/showdown 12 threads and 800 connections Thread Stats Avg Stdev Max +/-‐ Stdev Latency 3.07s 2.06s 8.36s 70.39% Req/Sec 24.65 9.97 63.00 67.10% 54256 requests in 3.00m, 122.50MB read Socket errors: connect 0, read 1, write 0, timeout 0 Requests/sec: 301.36 Transfer/sec: 696.77KB Phoenix Rails w/ Puma ॾ݅͋ΔͷͰߟࣗݾͰɻ 1IPFOJY͕ൺֱ͍ͯ͠ͷؒҧ ͍ͳͦ͞͏
΄͔ • &MJYJSຊ൪Քಇ࣮ – υϦίϜ͞Μɺ%"6ສͷ"Eͷ"1* • GBMPPENBSV &MJYJSͷ(SBQF • IUUQXXXTMJEFTIBSFOFUPISTIJCVZBFYFMJYJS
• 1IPFOJYͷ$IBOOFM – ଓܰྔϓϩηεͰॲཧ͢Δϝοηʔδ ϋϯυϥ • 8FC4PDLFU
ྑ͍͜ͱ͔Γݴ͍·͕ͨ͠ŋŋŋ • ฒߦੑೳ͕ߴ͍ɺԠੑೳ͕ྑ͍ͱݴ͕ͬͨʮܭࢉ͕ ͍ʯͱݴͬͯͳ͍ – 1IPFOJYελοΫ3BJMTΑΓ͍ɺ͚Ͳ – ಈతܕ͚ݴޠͰ͢͠ – ˞ҰԠ)J1&ʹ͢Δͱ͘ͳΔΑ͏
• ؔܕݴޠͱͯͦ͜͠·ͰߴػೳͰͳ͍ • ݸਓతͳ େنӡ༻ͯ͠ͳ͍ͷͰ$POTΛޠΔʹ ݟΓͳ͍ • &MJYJSྲྀߦΔ͔·ͩະ – ϓϩμΫγϣϯೖࣄྫ·ͩ͜Ε͔Β
લฤॻ͖·ͨ͠ɻ ޙฤ࣍߸Ͱ
None