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Tomcat 6ã§å®Ÿç¾ï¼ Ajaxã‚’è¶…ãˆã‚‹é€šä¿¡æŠ€è¡“Comet (1/3) - ï¼ IT
Tomcat 6ã§å®Ÿç¾ï¼Ajaxã‚’è¶…ãˆã‚‹é€šä¿¡æŠ€è¡“Cometï¼šTomcatã¯ã©ã“ã¾ã§â€œå®‰å…¨â€ã«ã§ãã‚‹ã®ã‹ï¼Ÿï¼ˆ3ï¼‰ï¼ˆ1/3 ãƒšãƒ¼ã‚¸ï¼‰ Ajaxã‚’è¶…ãˆã‚‹ï¼Ÿ Tomcat 6ã§æè¼‰ã•ã‚ŒãŸCometã¨ã¯ï¼Ÿ å‰å›žã¯Tomcatã‚’â€œå®‰å…¨â€ã«æ´»ç”¨ã™ã‚‹ãŸã‚ã«ã€ãƒ„ãƒ¼ãƒ«ã‚’ä½¿ã£ãŸé‹ç”¨ã®ä»•æ–¹ã‚„Tomcatã®è¨å®šã«ã¤ã„ã¦è§£èª¬ã—ã¾ã—ãŸã€‚ ä»Šå›žã¯Tomcatã®å®‰å…¨æ€§ã‹ã‚‰å°‘ã—é›¢ã‚Œã¦ã€Tomcat 6ã®æ–°æ©Ÿèƒ½ã®åˆ©ç”¨æ–¹æ³•ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚Tomcat 6ã§ã¯ã€ã„ãã¤ã‹ã®å¤§ããªæ‹¡å¼µãŒã‚ã‚Šã¾ã—ãŸãŒã€ä»Šå›žã¯J2SE 1.5ã§å®Ÿè£…ã•ã‚ŒãŸNew I/O APIï¼ˆjava.nioãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ï¼‰ã‚’ç”¨ã„ãŸCometï¼ˆã‚³ãƒ¡ãƒƒãƒˆï¼‰é€šä¿¡ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚ ãŠã•ã‚‰ã„ã€€ã€Œé€šå¸¸ã®HTTPã§ã®é€šä¿¡ã€ é€šå¸¸ã®HTTPã§ã®é€šä¿¡ã¯ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®Webãƒ–ãƒ©ã‚¦ã‚¶ãªã©ã‹ã‚‰ã‚µãƒ¼ãƒã¸ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’é€ä¿¡ã—ã€ã‚µãƒ¼ãƒã¯ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’è§£é‡ˆã—ã¦ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚’è¿”ã—ã¾ã™ã€‚ã¤ã¾ã‚Šã€é€šä¿¡ã®ã‚¿ã‚¤
hide-K 2007/12/14
java

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TheC10kProblem - ã€ŒC10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1ä¸‡å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ãƒ³ã‚¯ã™ã‚‹å•é¡Œã®ã“ã¨
TheC10kProbl em - ã€ŒC10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1ä¸‡å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ãƒ³ã‚¯ã™ã‚‹å•é¡Œã®ã“ã¨ ç›®æ¬¡ ã“ã®æ–‡æ›¸ã«ã¤ã„ã¦ C10K å•é¡Œ é–¢é€£ã‚µã‚¤ãƒˆ ã¾ãšèªã‚€ã¹ãæœ¬ I/O ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ I/O æˆ¦ç•¥ 1. å„ã‚¹ãƒ¬ãƒƒãƒ‰ãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘ä»˜ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ãƒ³ã‚° I/O ã¨ ãƒ¬ãƒ™ãƒ«ãƒ»ãƒˆãƒªã‚¬åž‹ã®å®Œäº†é€šçŸ¥ã‚’åˆ©ç”¨ã™ã‚‹. ä¼çµ±çš„ãª select() ä¼çµ±çš„ãª poll() /dev/poll kqueue() 2. å„ã‚¹ãƒ¬ãƒƒãƒ‰ãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘ä»˜ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ãƒ³ã‚° I/O ã¨ å¤‰æ›´åž‹ã®å®Œäº†é€šçŸ¥(readiness change notification)ã‚’åˆ©ç”¨ã™ã‚‹. kqueue() epoll ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ãƒ»ã‚·ã‚°ãƒŠãƒ« fd å˜ä½ã®ã‚·ã‚°ãƒŠãƒ« (Signal-per-fd)
hide-K 2007/03/05
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hide-K 2007/02/24
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hide-K 2006/10/18
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