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マイクロサービス化を支える継続的切り替え術
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Shia
August 24, 2019
Technology
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550
マイクロサービス化を支える継続的切り替え術
LL2019 の発表です
https://www.ospn.jp/odc2019/modules/eguide/event.php?eid=23
Shia
August 24, 2019
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Transcript
ϚΠΫϩαʔϏεԽΛࢧ ͑ΔܧଓతΓସ͑ज़ TIJB!ΫοΫύου
ࣗݾհ w γϜαϯϤϯ !TIJB w ΫοΫύουגࣜձࣾ
ࠓͷ wϞόΕͽ ‣ γεςϜ࣌ͷΓସ͑ઓུ
ϞόΕͽͱ wΨϥέʔ͚ͷαʔϏε wػೳՃ΄΅͍ͯ͠ͳ͍ wΞΫςΟϒͳϢʔβʔݮΒͳ͍
ͷ֓ཁ
ͷϙΠϯτ wڊେͳϞϊϦγοΫΞϓϦ͔Βͷ w"1*ܦ༝ͰϦιʔεΛऔಘ͢Δ ‣ %#XJUIOαʔϏεਏ͍ ‣ ͢Ͱʹ͑ΔϦιʔε"1*͕͋Δ
ͷϙΠϯτ DB
ͷϙΠϯτ DB API αʔϏε
ͷϙΠϯτ w݁ՌɺϏδωεϩδοΫ΄΅࠶࣮ʹ
ͷنײ wΤϯυϙΠϯτͷݸ΄Ͳ wݩίʔυສߦ΄Ͳ
Γସ͑ઓུΛߟ͑Δ
ཁ݅ wҰؾʹΓସ͑ͳ͍ʂʂʂʂʂ ‣ ࣄނͬͨ߹ɺ֬ೝ͠ͳ͍ͱ͍͚ͳ͍ίʔ υͷྔ͕ଟ͍ ‣ ͦͦࣄނΔ͕֬ߴ͍͔ΒΊ͓͍ͯ ͨ΄͏͕͍͍
ͭ·ΓɺͲͬͪʹྲྀ͔͢ Ͱ͖Δ͚ͩࡉ੍͔͘ޚ͍ͨ͠
چαʔϏε ཁ݅ ৽αʔϏε GET /recipes
چαʔϏε ཁ݅ ৽αʔϏε ͦΕҎ֎ GET /recipes
ख๏MPDBUJPOͰؤுΔ location /recipes { proxy_pass new_service; } location / {
proxy_pass old_service; }
چαʔϏε ৽αʔϏε ͦΕҎ֎ GET /recipes ख๏MPDBUJPOͰؤுΔ
ख๏MPDBUJPOͰؤுΔ ࣮Λ༻ҙ͢Δ ৽αʔϏεΛσϓϩΠ /(*/9ͷઃఆΛߋ৽ͯ͠Ϧϩʔυ
ख๏MPDBUJPOͰؤுΕͳ͍ wσϓϩΠຖʹ/(*/9ͷઃఆΛॻ͖͠ ͍ͨʁ wύεಉ͚ͩ͡Ͳॲཧҧ͏߹ʁ ‣ (&5SFDJQFTWT1045SFDJQFT
ਅͷཁ݅ wΓସ͑खॱΛ؆୯ʹ͍ͨ͠ wΤϯυϙΠϯτ ΞΫγϣϯ ୯ҐͰ Γସ͍͑ͨ
৽αʔϏεʹΓସ͑ͷ ܾఆݖΛҠৡ͢Δ
w৽αʔϏε ‣ ॲཧՄೳͳΒॲཧͯ͠ฦ͢ ‣ ແཧͳΒແཧͱฦ͢ ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ
ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε
ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes 200 OK 200 OK
ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes Ҏ֎ ະ࣮ͩΑʂʂ
ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes Ҏ֎ 200 OK 200 OK
ະ࣮ͩΑʂʂ
w৽αʔϏεଆΛσϓϩΠ͢Δ͚ͩͰ͢ ͕ͯ݁͢Δ ख๏Γସ͑ͷܾఆݖΛҠৡ͢Δ
ख๏࣮ྫ upstream backend { server new_service max_fails=0; server old_service backup;
} server { location / { proxy_next_upstream http_503 non_idempotent; proxy_pass backend; } } ৄ͍͠આ໌͜͜ͰݟΕ·͢ https://techlife.cookpad.com/entry/2019/03/05/115000
ऴΘΓ wͪΐͬͱؤுΕࡉ͔͍୯ҐͰɺ҆શʹ ָͯ͠Γସ͕͑Ͱ͖Δ