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

1. ϚΠΫϩαʔϏεԽΛࢧ ͑Δܧଓత੾Γସ͑ज़ TIJB!ΫοΫύου
2. ࣗݾ঺հ w γϜ
   αϯϤϯ !TIJB
   w ΫοΫύουגࣜձࣾ
3. ࠓ೔ͷ࿩͸ wϞόΕͽ෼཭
   ‣ γεςϜ෼཭࣌ͷ੾Γସ͑ઓུ
4. ϞόΕͽͱ͸ wΨϥέʔ޲͚ͷαʔϏε
   wػೳ௥Ճ͸΄΅͍ͯ͠ͳ͍
   wΞΫςΟϒͳϢʔβʔ͸ݮΒͳ͍
5. ෼཭ͷ֓ཁ
6. ෼཭ͷϙΠϯτ wڊେͳϞϊϦγοΫΞϓϦ͔Βͷ෼཭
   w"1*
   ܦ༝ͰϦιʔεΛऔಘ͢Δ
   ‣ 
   %#
   XJUI
   O
   αʔϏε͸ਏ͍
   ‣ ͢Ͱʹ࢖͑ΔϦιʔε
   "1*
   ͕͋Δ
7. ෼཭ͷϙΠϯτ DB
8. ෼཭ͷϙΠϯτ DB API αʔϏε
9. ෼཭ͷϙΠϯτ w݁ՌɺϏδωεϩδοΫ͸΄΅࠶࣮૷ʹ
10. ෼཭ͷن໛ײ wΤϯυϙΠϯτͷ਺͸ݸ΄Ͳ
    w෼཭ݩίʔυ͸໿ສߦ΄Ͳ
11. ੾Γସ͑ઓུΛߟ͑Δ
12. ཁ݅ wҰؾʹ੾Γସ͑ͳ͍ʂʂʂʂʂ
    ‣ ࣄނͬͨ৔߹ɺ֬ೝ͠ͳ͍ͱ͍͚ͳ͍ίʔ υͷ෼ྔ͕ଟ͍
    ‣ ͦ΋ͦ΋ࣄނΔ֬཰͕ߴ͍͔Β΍Ί͓͍ͯ ͨ΄͏͕͍͍
13. ͭ·ΓɺͲͬͪʹྲྀ͔͢
    Ͱ͖Δ͚ͩࡉ੍͔͘ޚ͍ͨ͠
14. چαʔϏε ཁ݅ ৽αʔϏε GET /recipes
15. چαʔϏε ཁ݅ ৽αʔϏε ͦΕҎ֎ GET /recipes
16. ख๏
    MPDBUJPO
    ͰؤுΔ location /recipes { proxy_pass new_service; } location / { proxy_pass old_service; }
17. چαʔϏε ৽αʔϏε ͦΕҎ֎ GET /recipes ख๏
    MPDBUJPO
    ͰؤுΔ
18. ख๏
    MPDBUJPO
    ͰؤுΔ  ࣮૷Λ༻ҙ͢Δ
     ৽αʔϏεΛσϓϩΠ
     /(*/9
    ͷઃఆΛߋ৽ͯ͠Ϧϩʔυ
19. ख๏
    MPDBUJPO
    Ͱ͸ؤுΕͳ͍ wσϓϩΠຖʹ
    /(*/9
    ͷઃఆΛॻ͖௚͠ ͍ͨʁ
    wύε͸ಉ͚ͩ͡Ͳॲཧ͸ҧ͏৔߹͸ʁ
    ‣ (&5
    SFDJQFT
    WT
    1045
    SFDJQFT
20. ਅͷཁ݅ w੾Γସ͑खॱΛ؆୯ʹ͍ͨ͠
    w
    ΤϯυϙΠϯτ ΞΫγϣϯ ୯ҐͰ੾ Γସ͍͑ͨ
21. ৽αʔϏεʹ੾Γସ͑ͷ ܾఆݖΛҠৡ͢Δ
22. w৽αʔϏε͸
    ‣ ॲཧՄೳͳΒॲཧͯ͠ฦ͢
    ‣ ແཧͳΒແཧͱฦ͢ ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ
23. ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε
24. ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes 200 OK 200 OK
25. ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes Ҏ֎ ະ࣮૷ͩΑʂʂ
26. ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ چαʔϏε ৽αʔϏε GET /recipes Ҏ֎ 200 OK 200 OK ະ࣮૷ͩΑʂʂ
27. w৽αʔϏεଆΛσϓϩΠ͢Δ͚ͩͰ͢΂ ͕ͯ׬݁͢Δ ख๏
    ੾Γସ͑ͷܾఆݖΛҠৡ͢Δ
28. 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; } } ৄ͍͠આ໌͸͜͜ͰݟΕ·͢ https://techlife.cookpad.com/entry/2019/03/05/115000
29. ऴΘΓ wͪΐͬͱؤுΕ͹ࡉ͔͍୯ҐͰɺ҆શʹ ָͯ͠੾Γସ͕͑Ͱ͖Δ