Apache Lucene - Wikipedia
Apache Lucene（アパッムルシーン）ã¯ã€Doug Cuttingã«ã‚ˆã£ã¦é–‹ç™ºã•ã‚ŒãŸã€Java製ã®FLOSSã®æ¤œç´¢ãƒ©ã‚¤ãƒ–ラリã§ã‚る。Luceneã¯ã€å¼·åŠ›ãªæ–‡æ›¸ã‚¤ãƒ³ãƒ‡ã‚シングåŠã³æ¤œç´¢æ©Ÿèƒ½ã€ã‚¹ãƒšãƒ«ãƒã‚§ãƒƒã‚¯ã€ãƒã‚¤ãƒ©ã‚¤ãƒˆã€ãƒ†ã‚スト解æžæ©Ÿèƒ½ã‚’æä¾›ã™ã‚‹ã€‚Apacheã®ãƒˆãƒƒãƒ—レベルプãƒã‚¸ã‚§ã‚¯ãƒˆã®1ã¤ã§ã‚る。 Luceneã¯ã€Apache Solrã€Elasticsearchç‰ã®æ¤œç´¢ãƒ—ラットフォームã§åˆ©ç”¨ã•ã‚Œã‚‹æ¤œç´¢ãƒ©ã‚¤ãƒ–ラリã§ã‚る。以å‰ã¯Lucene.NETã€Mahoutã€Tikaã€Nutchã¨ã„ã£ãŸã‚µãƒ–プãƒã‚¸ã‚§ã‚¯ãƒˆãŒå˜åœ¨ã—ãŸãŒã€ç¾åœ¨ã¯ã™ã¹ã¦ç‹¬ç«‹ã—ãŸApacheã®ãƒˆãƒƒãƒ—レベルプãƒã‚¸ã‚§ã‚¯ãƒˆã¨ãªã£ã¦ã„る。2010å¹´3月ã‹ã‚‰ã€Apache SolrãŒLuceneã®ã‚µãƒ–プãƒã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã¦é–‹ç™ºã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ãŒãƒžãƒ¼ã‚¸ã•ã‚ŒãŸã€‚ Luceneã§æ—¥æœ¬èªžã®ãƒ†ã‚スト解æžã‚’利用ã™ã‚‹ãŸã‚ã«ã¯ã€Kuromojiを利用ã—ãŸJa
Apache Lucene - Overview - Apache Lucene
Apache Lucene sets the standard for search and indexing performance Apache Lucene Core Apache Luceneâ„¢ is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions
Twitterã€ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ 検索をLuceneã§æ§‹ç¯‰ã€‚50å€é«˜é€Ÿã«ï¼
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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