Reflections on Perl and DBI from an Early Contributor
The name Buzz Moschetti probably isn’t familiar to you. Buzz was the author of the Perl 4 database for Interbase known as Interperl. Back in those days Perl 5 was barely a twinkle in Larry’s eye and database interfaces for Perl 4 required building a custom perl binary. Buzz was one of the four people to get the email on September 29th 1992 from Ted Lemon that started the perldb-interest project wh
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2009å¹´04月19æ—¥ Hadoop 㨠RDBMS ã®æ€§èƒ½ã‚’比較ã—ã¦ã¿ãŸã€‚ã¨ã„ã†è«–文。ã®æ„Ÿæƒ³ã€‚ã®ç¿»è¨³ã€‚ Stonebraker, DeWitt, et al. compare MapReduce to DBMS Map-Reduce (Hadoop)㨠Parallel DBMS (Vertica 㨠DBMS-X) ã®æ€§èƒ½ã‚’比較ã—ãŸã¨ã“ã‚ã€ãŠãŠã‚€ã DB ã®æ–¹ãŒæ€§èƒ½ãŒã‚ˆãã€ã‚±ãƒ¼ã‚¹ã«ã‚ˆã£ã¦ã¯ 6.5å€ã‚‚性能差ãŒã‚ã‚‹ã¨ã„ã†å®Ÿé¨“çµæžœãŒã€SIGMOD09 ã§ç™ºè¡¨ã•ã‚ŒãŸã‚‰ã—ã„。原論文ã¯ã“ã“ã‹ã‚‰ PDF ã§ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã§ãる。 以下㯠DBMS2 ã¨ã„ã†ãƒ–ãƒã‚°ã«æ›¸ã‹ã‚ŒãŸã€ã“ã®è«–文をèªã‚“ã 人ã®æ„Ÿæƒ³ã®ç¿»è¨³ã€‚ Stonebraker, DeWitt, et al. MapReduce 㨠DBMS ã®æ¯”較 5人ã®å…±è‘—者(主ç†è€…㯠Andy Pavlo ã£ã½ã„)ã¨ã¨ã‚‚ã«ã€Map-Reduce å«Œã„ã§çŸ¥ã‚‰ã‚Œ
EventuallyConsistent - çµæžœæ•´åˆæ€§
EventuallyConsistent - çµæžœæ•´åˆæ€§ 目次 ã“ã®æ–‡æ›¸ã«ã¤ã„㦠çµæžœæ•´åˆæ€§ æ´å²ã®è©± クライアントå´ã®æ•´åˆæ€§ サーãƒå´ã®æ•´åˆæ€§ ã¾ã¨ã‚ çµæžœæ•´åˆæ€§ ã“ã®æ–‡æ›¸ã«ã¤ã„㦠Werner Vogels "Eventually Consistent" ã®æ—¥æœ¬èªžè¨³ã§ã™. http://www.allthingsdistributed.com/2007/12/eventually_consistent.html 推敲æ“è¿Ž: 誤訳, タイãƒ, 訳語ã®ä¸çµ±ä¸€, ãã®ã»ã‹... è¿‘å¹´, データ複製ã®æ–‡è„ˆã§ çµæžœæ•´åˆæ€§(eventual consistency) ã«é–¢ã™ã‚‹è°è«–ãŒç››ã‚“ã . ã“ã®è¨˜äº‹ã§ã¯å¤§è¦æ¨¡ãƒ‡ãƒ¼ã‚¿ã®è¤‡è£½ã«ãŠã‘る原則や抽象, 高å¯ç”¨æ€§ã¨ãƒ‡ãƒ¼ã‚¿æ•´åˆæ€§ã®ãƒˆãƒ¬ãƒ¼ãƒ‰ã‚ªãƒ•ã«é–¢ã™ã‚‹è©±é¡Œã‚’ã„ãã¤ã‹é›†ã‚ã¦ã¿ãŸã„ã¨æ€ã†. ç¾åœ¨é€²è¡Œä¸ã®åˆ†é‡Žã§ã‚ã‚Š, å…¨ã¦ã®å®šç¾©ãŒæœ€åˆã‹ã‚‰æ˜Žå¿«ã§ã‚ã‚‹ã¨ã¯æ€ã‚ãªã„ã§ã»
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