PHPで学ぶCacheの距離の話

by Ryo Tomidokoro

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PHPͰֶͿCacheͷڑ཭ͷ࿩ 1)1ษڧձ

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Cacheͱ͸ʁ

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Oxford Dictionary ΑΓ An auxilirary memory from which high speed retrieval is possible ߴ଎Ͱσʔλऔಘ͕Ͱ͖ΔهԱ૷ஔ

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WebΞϓϦͰͷར༻༻్ ߴෛՙΫΤϦͷॲཧ݁Ռ ूܭॲཧͷ݁Ռ ϧʔςΟϯά ઃఆϑΝΠϧ CDNͱ͔ϒϥ΢βΩϟογϡ͸ɺࠓճ͸ର৅֎

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ࠓ೔࿩͢͜ͱ CacheͷޮՌΛࣄલʹ೺Ѳ͢Δ͜ͱ ΑΓߴ͍ޮՌΛಘΔͨΊͷCacheͷڑ཭ͷ࿩

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ࠓ೔࿩͞ͳ͍͜ͱ Cacheͷϛυϧ΢ΣΞ Cacheͷӡ༻ ࢀߟ1 WebαʔϏεʹ͓͚ΔΩϟογϡઓུ https://speakerdeck.com/yusukebe/websabisuniokeru-kiyatusiyuzhan-lue ࢀߟ2 WebΞϓϦέʔγϣϯͷΩϟογϡઓུͱͦͷύλʔϯ https://speakerdeck.com/moznion/pattern-and-strategy-of-web-application-caching

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CacheͷޮՌΛࣄલʹ೺Ѳ͢Δ

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CacheΛ࢖͏͜ͱͰԿނ଎͘ͳΔͷ͔ʁ

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ྫ͑͹͜Μͳߏ੒

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ಉҰωοτϫʔΫ಺ͷDBͷΫΤϦ݁ՌΛCache ΫΤϦ݁ՌΛಘΔ·Ͱͷ࣌ؒ 5$1઀ଓ $16ԋࢉ %JTL*0 MySQL + +

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5$1઀ଓ $16ԋࢉ %JTL*0 MySQL + + ΫΤϦ݁ՌΛಘΔ·Ͱͷ࣌ؒ - RedisʹCache 5$1઀ଓ .FNPSZ*0 Redis + ಉҰωοτϫʔΫ಺ͷDBͷΫΤϦ݁ՌΛCache ΫΤϦ݁ՌΛಘΔ·Ͱͷ࣌ؒ

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$16ԋࢉ %JTL*0 MySQL + .FNPSZ*0 Redis MemoryIOͷํ͕଎͚Ε͹ɺ଎౓޲্͕ݟࠐΊͦ͏

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ϨΠςϯγʔ https://gist.github.com/jboner/2841832

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͔͠͠ɺ͋·Γ଎͘ͳΒͳ͍ύλʔϯ͕͋Δ

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DBͷσʔλ͕ϝϞϦʹ৐Δ৔߹ ΫΤϦ݁ՌΛಘΔ·Ͱͷ࣌ؒ 5$1઀ଓ ΄΅.FNPSZ*0 MySQL + ΫΤϦ݁ՌΛಘΔ·Ͱͷ࣌ؒ - RedisʹCache 5$1઀ଓ .FNPSZ*0 Redis +

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DBͷσʔλ͕ϝϞϦʹ৐Δ৔߹ ΄΅.FNPSZ*0 MySQL .FNPSZ*0 Redis Φʔμʔ͕มΘΔΑ͏ͳ଎౓޲্͸ݟࠐΊͳ͍

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͜ΕҎ্ͷ଎౓޲্Λ͢Δʹ͸ʁʁ

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WebΞϓϦ͔ΒCache·Ͱͷڑ཭Λม͑Δ 5$1઀ଓ .FNPSZ*0 ͬͪ͜ +

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WebΞϓϦ͔ΒCache·Ͱͷڑ཭Λม͑Δ 5$1઀ଓ .FNPSZ*0 ͬͪ͜ + TCP઀ଓΛ΍ΊΔ -> ϩʔΧϧCache

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https://gist.github.com/jboner/2841832 ϨΠςϯγʔ

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PHPͰϩʔΧϧCache ϩʔΧϧRedis, Memcached -> ਏ͍ ϑΝΠϧ -> ͍͍͚Ͳ… APCu(ϝϞϦ) -> ྑͦ͞͏ աڈͷऔΓ૊Έ - ແཧ΍ΓOPCache࢖͏Cache https://speakerdeck.com/hanhan1978/cachegasu-ifalsekaque-ren-suruhua

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PHPͷࣄ৘ ϓϩηεͷಠཱੑ͕ߴ͍ ॲཧऴྃޙʹϝϞϦ͸ΫϦΞ͞ΕΔ ϓϩηεؒͰͷϝϞϦڞ༗͕ग़དྷͳ͍ɻ PHP΢Σϒαʔόʔͷొ৔͕๬·ΕΔ

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࣮ଌͯ͠Έͨ

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Trans/SecͱCacheํ๏ ํ๏ USBOTTFD ϦϞʔτ.Z42- ϦϞʔτ3FEJT ϩʔΧϧ"1$V DBσʔλ͕ϝϞϦʹ৐͍ͬͯΔ৔߹ʹ͍ͭͯݕূ

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·ͱΊ Latencyͷද͸͓֮͑ͯ͜͏Ͷ CacheʹΑΔվળݟࠐΈ͸ࣄલʹཱͯΔ ܭࢉྔ͚ͩ͡Όͳ͘ڑ཭΋ߟ͑Δ ͳ͓ɺCacheӡ༻͸পͰ͢….

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͓͠·͍