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RoughOverviewOfLuceneSearchProcess
Rough overview of Lucene 2.9 search process
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Twitterã®ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ 検索機能ãŒã€ã‚ªãƒ¼ãƒ—ンソースã®Luceneベースã«ãªã£ãŸã¨ã€Twitter Engineeringブãƒã‚°ã¸ã®ã‚¨ãƒ³ãƒˆãƒªã€ŒTwitter's New Search Architectureã€ã§ç´¹ä»‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã“ã‚Œã¾ã§Twitterã¯ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ 検索ã«MySQLベースã®ç‹¬è‡ªã‚·ã‚¹ãƒ†ãƒ を利用ã—ã¦ãã¾ã—ãŸãŒã€è¦æ¨¡ã®æ‹¡å¤§ãŒé›£ã—ããªã£ã¦ããŸãŸã‚ã€6カ月å‰ã«æ–°ã‚·ã‚¹ãƒ†ãƒ ã®æ§‹ç¯‰ã‚’決定。オープンソースã®æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã§ã‚ã‚‹Luceneã‚’é¸æŠžã—ãŸã¨ã®ã“ã¨ã§ã™ã€‚ 従æ¥ã®50å€ã‚‚高速ã«ï¼ 検索エンジンã«å¯¾ã™ã‚‹è¦ä»¶ã¯ä»¥ä¸‹ã®ã‚ˆã†ã«éžå¸¸ã«åŽ³ã—ã„ã‚‚ã®ã§ã—ãŸã€‚ Our demands on the new system are immense: With over 1,000 TPS (Tweets/sec) and 12,000 QPS (queries/sec) = over 1 billion
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