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ソーシャルゲームDBの危機回避
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Ryosuke Suto
December 12, 2014
Technology
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ソーシャルゲームDBの 危機回避
MySQL Casual Talks vol.7
Ryosuke Suto
December 12, 2014
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Transcript
CyberAgent, Inc. Ryosuke Suto ιʔγϟϧήʔϜ%#ͷ ةػճආ MySQL Casual
Talks vol.7 2014/12/07
$ZCFS"HFOU *OD ΞδΣϯμ ࣗݾհ σΟεΫ༰ྔͷةػΛճආ͢Δ ϨϓϦԆͷةػΛճආ͢Δ
ਢ౻ྋհʢ͢ͱ͏Γΐ͏͚͢ʣ @strsk גࣜձࣾαΠόʔΤʔδΣϯτ ΠϯϑϥˍίΞςΫຊ෦ ISUCON4 ༧બഊୀ $ZCFS"HFOU *OD
$ZCFS"HFOU *OD σΟεΫ༰ྔͷةػΛճආ͢Δ
$ZCFS"HFOU *OD
$ZCFS"HFOU *OD ΪϑτϘοΫεͱ ΧʔυҰཡͷ্ঢ͕Ϡό͍ • OͷσʔλͰ৽ँ͕ܹ͍͠ • ཤྺදࣔௐࠪͷͨΊɺҰఆظؒͷσʔλඞཁ •
ΠϕϯτͷϐʔΫ࣌े(#%BZ૿͑Δ͜ͱ • ཧআͨ͠··Ͱͯ͠ͳ͔ͬͨΓʜ
6 CyberAgent, Inc. Ϡό͍ʂʂʂ
$ZCFS"HFOU *OD ͬͨ͜ͱ • ཧআ͞Ε͍ͯΔɺҰఆظؒܦͬͨσʔλΛআ • আྔ͕ଟ͗͢ΔͷͰϝϯςϯε࣮ࢪ • */4&35*/504&-&$5ͱ3&/".&Ͱ࡞Γͳ
͓͢ • σʔλআόονΛͭͬͯ͘ఆظతʹআ
$ZCFS"HFOU *OD CREATE TABLE giftbox_new LIKE giftbox; INSERT INTO
giftbox_new SELECT giftbox WHERE (status = 1 AND updated > ‘2014-11-07 00:00:00’) OR (status = 0); RENAME giftbox giftbox_bk, giftbox_new giftbox; DROP TABLE giftbox_bk;
$ZCFS"HFOU *OD %&-&5&ͯ͠ ۭ͖༰ྔ͕૿͑ͳ͍ • IUUQOJQQPOEBOKJCMPHTQPUKQ JOOPECIUNM • %&-&5&ͯ͠আ͞ΕͨϚʔΫ͕͞ΕΔ͚ͩͰ༰
ྔݮΒͳ͍ • 015*.*;&͢ΔͨΊʹQUPTDΛ͔ͭ͏
$ZCFS"HFOU *OD $ pt-online-schema-change –-execute --alter=“engine=InnoDB” h=localhost,D=db_name,t=giftbox,u=root Α͔ͭ͘͏Φϓγϣϯ TFUWBSTlTRM@MPH@CJOzʜϨϓϦͤͨ͘͞ͳ͍࣌
DSJUJDBMMPBEʜεϨου͕͜ΕΛ͑Δͱதஅ NBYMPBEʜεϨου͕͜ΕΛ͑ΔͱҰ࣌ఀࢭ
$ZCFS"HFOU *OD ةػճආʂ
12 CyberAgent, Inc. ةػճආʂʂʂ
$ZCFS"HFOU *OD ϨϓϦԆͷةػΛճආ͢Δ
$ZCFS"HFOU *OD 536/$"5&ͨ͠ΒԆ • ήʔϜͷϚελσʔλ͕ຖճσʔλΛΫϦΞͯ͠ ಡΈࠐΉελΠϧ • ςʔϒϧΛ536/$"5&ͯ͠Δ෦ͰԆ͕ ൃੜ͍ͯ͠Δ
• %&-&5&͢ΔΑΓ͍
$ZCFS"HFOU *OD খ͍͞ςʔϒϧͰ͍ • ༰ྔ.#ɺ ߦ • 536/$"5&TFD •
%&-&5&TFD
16 CyberAgent, Inc. ͍ʂʂʂ
$ZCFS"HFOU *OD όάͩͬͨ • IUUQXXXQFSDPOBDPNCMPH QFSGPSNBODFQSPCMFNXJUIJOOPECBOEESPQ UBCMF • 536/$"5&は%301$3&"5&
• lJOOPEC@pMF@QFS@UBCMFzͰ%301࣌ͷόά • όοϑΝϓʔϧͷར༻ྔ͕େ͖͍΄Ͳ͘ͳΔ
$ZCFS"HFOU *OD %&-&5&ʹͯ͠Ԇճආ • σʔλྔ͕ଟ͍ͱ%&-&5&Ͱ͘ͳΔ • εϨʔϒˠϚελʔͷॱͰ࣮ߦͯ͠ճආ Slave> DELETE
FROM masterdata; Master> DELETE FROM masterdata; Master> INSET INTO masterdata (hoge,fuga,…) VALUES (xxx,yyy,…); ʢུʣ
19 CyberAgent, Inc. ةػճආʂʂʂ