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isdyy id:isdyy

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isdyy 2010/01/14
server

scalability

vps

cloud
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BJ Clark â€“ Blog
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isdyy 2009/08/10
key-value

scalability

kvs
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isdyy 2009/06/19
scalability
ãƒªãƒ³ã‚¯
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CAPå®šç†ã¨ã„ã†ã®ã¯ã€ Consistency Availability Partitions ã¨ã„ã†çŠ¶æ…‹ã®2ã¤ã¾ã§ã—ã‹é”æˆã§ããªã„ã€‚ï¼“ã¤ã™ã¹ã¦ã‚’é”æˆã™ã‚‹ã“ã¨ã¯ã§ããªã„ã¨ã„ã†å®šç†ã§ã‚ã‚‹ã€‚ä¾‹ãˆã°Consistencyï¼ˆä¸€è²«æ€§ï¼‰ã¨Availability(å¯ç”¨æ€§)ã‚’åŒæ™‚ã«æº€è¶³ã•ã›ã‚‹ã¨Partitions(åˆ†æ•£)ã‚’é”æˆã™ã‚‹ã®ã‚’ã‚ãã‚‰ã‚ã‚‹ã—ã‹ãªã„ã€‚å¯ç”¨æ€§ã¨åˆ†æ•£æ€§ã‚’åŒæ™‚ã«æº€è¶³ã•ã›ã‚‹ã«ã¯Consistencyï¼ˆä¸€è²«æ€§ï¼‰ã‚’ã‚ãã‚‰ã‚ã‚‹ã€‚ã™ãªã‚ã¡Eventually ConsistentãªçŠ¶æ…‹ã‚’å—ã‘å…¥ã‚Œã‚‹ã€‚ ããƒ¼ã‚†ãƒ¼çŠ¶æ…‹ã‚’å—ã‘å…¥ã‚Œã‚‹ã¨ã‚¹ã‚±ãƒ¼ãƒ©ãƒ“ãƒªãƒ†ã‚£ã‚’é”æˆã§ãã‚‹ã‚ˆã†ã«ãªã‚‹ã®ã§ã€å·¨å¤§ãªãƒ‡ãƒ¼ã‚¿ã‚»ãƒ³ã‚¿ãƒ¼ã®ä¸ã«å®‰ã„PCã‚µãƒ¼ãƒãƒ¼ã‚’å¤§é‡ã«ãŠã„ã¦CAPã®Cã‚’è‹¥å¹²çŠ ç‰²ã«ã—ã¤ã¤ã€é«˜é€Ÿãªãƒ‡ãƒ¼ã‚¿å‡¦ç†ã‚’è¡Œã†ã€‚ãã®ã‚ˆã†ãªè¨ˆç®—ãƒ¢ãƒ‡ãƒ«ã§ã‚ã‚‹ã€‚ ã‚¯ãƒ©ã‚¦ãƒ‰æ™‚ä»£ã®è¨ˆç®—ãƒ‘ãƒ©ãƒ€ã‚¤ãƒ ãŒRDBMSãŒ30å¹´é–“ç ”ç©¶é–‹ç™ºã—ã¦ã„ãŸACIDãƒ‘ãƒ©ãƒ€ã‚¤ãƒ ã‹ã‚‰CAP
isdyy 2009/05/21
database

transaction

scalability

cloud
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ã‚¯ãƒ©ã‚¦ãƒ‰ã«ã¯ãã£ã¨ã“ãªã„ã‘ã©ã€BASEã‚„CAPå®šç†ã¯é¢ç™½ã„ - æœªæ¥ã®ã„ã¤ã‹/hyoshiokã®æ—¥è¨˜
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isdyy 2009/05/20
database

transaction

scalability

cloud
ãƒªãƒ³ã‚¯
ã€ã‚¯ãƒ©ã‚¦ãƒ‰ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã€‘ RDBã‚’ã‚¯ãƒ©ã‚¦ãƒ‰ã«è¼‰ã›ã‚‹ã¹ãã‹
isdyy 2009/04/23
database

cloud

scalability
ãƒªãƒ³ã‚¯
yohei-y:weblog: CAPã®Cã¨ACIDã®C
CAP å®šç†ã¨ BASE ã®æ¦‚å¿µã‚’è€ƒãˆãŸã®ã¯ UCB ã® Brewer å…ˆç”Ÿã§ã€å½¼ã¯ inktomi ã®å‰ã„äººã ã£ãŸã¨ã„ã†ã®ã¯å‰å›žè¿°ã¹ãŸã€‚ å½“æ™‚ã®inktomiã¯Yahoo!ã‚„ Microsoftã€ãã‚Œã«gooã«ã‚‚æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã‚’æä¾›ã—ã¦ã„ã¦ã€1å„„ä»¥ä¸Šã®Webãƒšãƒ¼ã‚¸(ãƒ†ãƒ©ãƒã‚¤ãƒˆç´šã®ãƒ‡ãƒ¼ã‚¿)ã‚’æ‰±ã£ã¦ã„ãŸã‚ˆã†ã ã€‚ æ‰‹å…ƒã®WEB+DB PRESS Vol.49 ã®ã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ãƒªãƒ‹ãƒ¥ãƒ¼ã‚¢ãƒ«è¨˜äº‹ã«ã‚ˆã‚‹ã¨ã€ç¾åœ¨ã®ã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ã¯1160ä¸‡URLã¨100GBã®HTMLãƒ‡ãƒ¼ã‚¿(åœ§ç¸®æ¸ˆã¿)ã‚’æ‰±ã£ã¦ã„ã‚‹ã‚‰ã—ã„ã®ã§ã€ã–ã£ãã‚Šã„ã£ã¦98å¹´ã®æ™‚ç‚¹ã§inktomi ã¯ç¾åœ¨ã®ã¯ã¦ãƒ–ã®10å€ã®ãƒ‡ãƒ¼ã‚¿ã‚’æ‰±ã£ã¦ã„ãŸã¨ã„ã£ã¦ã‚‚ã„ã„ã€‚inktomiã§ä½¿ã£ã¦ã„ãŸã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã®æ€§èƒ½ã¯ç¾åœ¨ã®PCã‚µ ãƒ¼ãƒã«æ¯”ã¹ã‚Œã°1/10ç¨‹åº¦ã®æ€§èƒ½ãªã®ã§ã€ã‚·ã‚¹ãƒ†ãƒ å…¨ä½“ã§ã¿ã‚‹ã¨ç¾åœ¨ã®ã¯ã¦ãƒ–ã®100å€ã®è¦æ¨¡ã«ãªã‚‹ã ã‚ã†ã‹ã€‚ çµæžœçš„ã«ã¯ã€inktom
isdyy 2009/03/18
cap

base

acid

scalability
ãƒªãƒ³ã‚¯
HowFriendFeedUsesMySqlToStoreSchemaLessData - FriendFeed ã§ã¯ MySQL ã‚’ä½¿ã„ã©ã®ã‚ˆã†ã«ã‚¹ã‚ãƒ¼ãƒžãƒ¬ã‚¹ã®ãƒ‡ãƒ¼ã‚¿ã‚’ä¿å˜ã—ã¦ã„ã‚‹ã®ã‹
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isdyy 2009/03/01
database

mysql

scalability
ãƒªãƒ³ã‚¯
ã€Œã‚¯ãƒƒã‚¯ãƒ‘ãƒƒãƒ‰ã€ã®è£å´ã«ã„ã£ã¦ããŸ | Carpe Diem
Web ãƒ‡ãƒ™ãƒãƒƒãƒ‘ãƒ¼ã®ç¥å…¸ã«è¡Œã£ã¦ããŸã€‚ä»Šå›žã¯ã€é€šè·¯æ²¸ãã«ç”¨æ„ã•ã‚ŒãŸæ¯”è¼ƒçš„ç‹ã„ã‚¹ãƒšãƒ¼ã‚¹ã§é–‹å‚¬ã•ã‚ŒãŸã€‚ ä»¥ä¸‹ã€ãƒ¡ãƒ¢ã¨è‡ªåˆ†ã®å‹æ‰‹ãªæ„Ÿæƒ³ã‚’ã¾ã¨ã‚ã¦ãŠãã€‚ ã‚¯ãƒƒã‚¯ãƒ‘ãƒƒãƒ‰ã«ã¤ã„ã¦ æ¯Žæ—¥ã®æ–™ç†ã‚’æ¥½ã—ã¿ã«ã™ã‚‹ã“ã¨ã§å¿ƒã‹ã‚‰ã®ç¬‘é¡”ã‚’å¢—ã‚„ã™ 1998å¹´ã«ã‚ªãƒ¼ãƒ—ãƒ³ åŽ»å¹´ã®ãƒªãƒ‹ãƒ¥ãƒ¼ã‚¢ãƒ«ã®ã¨ãã« Rails ã§ä½œã‚Šç›´ã—ãŸ ä½¿ã„æ–¹ ãƒ¬ã‚·ãƒ”ã‚’ã®ã›ã‚‹ ãƒ¬ã‚·ãƒ”ã‚’ã•ãŒã™ æœˆé–“ãƒ¦ãƒ¼ã‚¶æ•° 547ä¸‡äºº Rails ã‚µã‚¤ãƒˆä¸ä¸–ç•Œ7ä½ (from rails 100 wiki)ã€ã¾ã•ã‹1ä½ãŒscribd.comã¨ã¯ æœˆé–“ 2.8å„„ PV(PVã§ã¯ã€Rais ã‚µã‚¤ãƒˆä¸ä¸–ç•Œ3ä½) ç™»éŒ²ãƒ¬ã‚·ãƒ”æ•°: 47ä¸‡å“ ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã¯ã€16-18æ™‚ãã‚‰ã„ãŒãƒ”ãƒ¼ã‚¯(å¤•é£¯ã‚’ä½œã‚‹å‰ã«èª¿ã¹ã‚‹ãƒ¦ãƒ¼ã‚¶ãŒå¤šã„ã¨ã®ã“ã¨) ç§‹ã‹ã‚‰ãƒãƒ¬ãƒ³ã‚¿ã‚¤ãƒ³ã«ã‹ã‘ã¦ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ãŒä¼¸ã³ã‚‹(æ¥é€±ã¯ãƒ”ãƒ¼ã‚¯ã ã¨ã„ã†ã“ã¨ã§ã€æœ€è¿‘ã¯ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å‘ä¸Šã«ä¸å¿ƒã«ã‚„ã£ã¦ã„ãŸ) ãƒ¦ãƒ¼ã‚¶æ•°: 547ä¸‡äºº(ã™
isdyy 2009/02/08
cookpad

rails

scalability
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isdyy 2008/08/30
gree

scalability

rdbms
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isdyy 2008/08/20
mixi

server

image

apache

squid

scalability
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