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Isucon用Webサーãƒãƒ¼recaro : DSAS開発者ã®éƒ¨å±‹
11/3ã«é–‹å‚¬ã•ã‚ŒãŸ #isucon2 ã«ã€éš£ã®å¸ã® @pandax381 ã¨ä¸€ç·’ã«ã€ãƒãƒ¼ãƒ åŒé¾ã¨ã—ã¦å‚åŠ ã—ã¦ãã¾ã—ãŸã€‚ çµæžœã¯æƒ¨æ•—ã ã£ãŸã®ã§ã™ãŒã€ãã®ãƒ¬ãƒãƒ¼ãƒˆã‚’書ãå‰ã«ã€ #isucon2 ã§ä½¿ã†äºˆå®šã ã£ãŸç§˜å¯†å…µå™¨ recaro ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã™ã€‚ recaro ã¨ã¯ recaro ã¯ã‚«ãƒ¼ãƒãƒ«ç©ºé–“ã§å‹•ã httpd + memcached サーãƒãƒ¼ã§ã™ã€‚ httpd サーãƒãƒ¼ã¯ @pandax381 ãŒä½œæˆã—㟠tkhttpd ã§ã€ memcached 㯠kmemcached ã¨ã„ã†ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆãŒ 未完æˆã®ã¾ã¾æ”¾ç½®ã•ã‚Œã¦ã„ãŸã®ã‚’見ã¤ã‘ã¦ã€ç§ãŒãƒ‡ãƒãƒƒã‚°ï¼†é«˜æ€§èƒ½åŒ–ã—ãŸã‚‚ã®ã§ã™ã€‚ (KLab/kmemcached) 通常ã®nginx+memcachedã 㨠ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ <- TCP/IP ]-> nginx <-[ TCP/IP ]-> Memcached ([] ã¯ã‚·ã‚¹ãƒ†ãƒ コール) ã¨
Scaling Memcached with vBuckets
For years, people have used memcached to scale large sites. Originally, there was a simple modulo selection hash algorithm that was used. It still is used quite a bit actually and it’s quite easy to understand (although, it’s shown regularly that some people don’t truly understand it when applied to their full system). The algorithm is basically this: servers = ['server1:11211', 'server2:11211', '
MasteringMemcached
2008-09-27 17:53:11 +0900 (78d); rev 114 ã“ã®æ–‡æ›¸ã«ã¤ã„㦠分散型メモリオブジェクトã‚ャッシングシステムã§ã‚ã‚‹ memcached ã«ã¤ã„ã¦ã€ãã®ä»•çµ„ã¿ã€å°Žå…¥ã‚„プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‹ã‚‰ã®åˆ©ç”¨æ–¹æ³•ã¾ã§ã‚’紹介ã—ã¾ã™ã€‚ ã“ã®æ–‡ç« ã¯å¸¸ã«æ›¸ãã‹ã‘ã§ã™ã€‚誤å—脱å—ã‚„é–“é•ã„ã®æŒ‡æ‘˜ã‚„æƒ…å ±æä¾›ãªã©ã‚’æ“è¿Žã—ã¾ã™ã€‚ ã“ã®æ–‡æ›¸ã®å¯¾è±¡è€… memcached ã®å°Žå…¥ã‚’検討ã—ã¦ã„ã‚‹ã²ã¨ memcached をプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‹ã‚‰åˆ©ç”¨ã™ã‚‹æ–¹æ³•ã‚’知りãŸã„ã²ã¨ memcached ã®ä»•çµ„ã¿ã‚„仕様を知りãŸã„ã²ã¨ 環境ã«ã¤ã„㦠以下ã®ã‚ˆã†ãªç’°å¢ƒã‚’想定ã—ã¦ã„ã¾ã™ã€‚ UNIX ãŠã‚ˆã³ UNIX ライク OS x86 アーã‚テクãƒãƒ£ memcached 㯠x86 以外ã®ã‚¢ãƒ¼ã‚テクãƒãƒ£ã§ã‚‚動作ã—ã¾ã™ãŒã€ã“ã®æ–‡æ›¸ã§ã¯ x86 å‰æã¨ã—ã¦è¨˜è¿°ã—ã¾ã™ã€‚ memcached ã¨ã¯ memcached ã¯
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