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naoyaã®ã¯ã¦ãªãƒ€ã‚¤ã‚¢ãƒªãƒ¼ - Linuxã®ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥
ä¸–é–“ã§ã¯ PHP ãŒã€Perl ãŒã€ã¨ç››ã‚Šä¸ŠãŒã£ã¦ã„ã‚‹ã‚ˆã†ã§ã™ãŒç©ºæ°—ã‚’èªã¾ãšã¾ãŸã‚«ãƒ¼ãƒãƒ«ã®è©±ã§ã™ã€‚ä»Šå›žã¯ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«ã¤ã„ã¦ã€‚ /dev/shm ã«å‚ç…§ç³»ï¼¤ï¼¢ã‚’æŒã£ã¦ã„ãã¨ I/O è² è·ãŒæ¿€æ¸›ã—ãŸä»¶ï¼ˆå½“ãŸã‚Šå‰ã ã‘ã©ï¼‰ - drk7jp ã§ã€ãƒ‡ã‚£ã‚¹ã‚¯ä¸Šã«ã‚ã£ãŸãƒ•ã‚¡ã‚¤ãƒ«ã‚’ /dev/shm (tmpfs) ã«ç§»ã—ãŸã‚‰ I/O å¾…ã¡ãŒãªããªã£ã¦è² è·ãŒã•ãŒã£ãŸã€ã¨ã„ã†ã“ã¨ãªã‚“ã§ã™ãŒãŠãã‚‰ãã“ã‚Œã¯ tmpfs ã«ç½®ãå¿…è¦ã¯ãªã„ã‹ãªã¨æ€ã„ã¾ã™ã€‚Linux (ã«é™ã‚‰ãšä»–ã® OS ã‚‚ãã†ã§ã™ãŒ) ã«ã¯ãƒ‡ã‚£ã‚¹ã‚¯ã®å†…å®¹ã‚’ä¸€åº¦èªã‚“ã ã‚‰ãã‚Œã¯ã‚«ãƒ¼ãƒãƒ«ãŒã‚ãƒ£ãƒƒã‚·ãƒ¥ã—ã¦ã€äºŒåº¦ç›®ä»¥é™ã¯ãƒ¡ãƒ¢ãƒªã‹ã‚‰èªã‚€æ©Ÿæ§‹ = ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥ãŒã‚ã‚Šã¾ã™ã€‚tmpfs ã«ãƒ‡ãƒ¼ã‚¿ã‚’è¼‰ã›ã‚‹ã“ã¨ãŒã§ããŸã€ã¨ã„ã†ã“ã¨ã¯ç‰©ç†ãƒ¡ãƒ¢ãƒªã®å®¹é‡ã«åŽã¾ã‚‹ã ã‘ã®ãƒ‡ãƒ¼ã‚¿ã‚µã‚¤ã‚ºã‹ã¨æ€ã†ã®ã§ã€æ”¾ã£ã¦ãŠã‘ã°è©²å½“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã®å†…å®¹ã™ã¹ã¦ãŒãƒ¡ãƒ¢ãƒªä¸Šã«ã‚ãƒ£ãƒƒã‚·ãƒ¥ã•ã‚Œã¦ io
webmarksjp 2008/07/14
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MasteringMemcached
2008-09-27 17:53:11 +0900 (78d); rev 114 ã“ã®æ–‡æ›¸ã«ã¤ã„ã¦ åˆ†æ•£åž‹ãƒ¡ãƒ¢ãƒªã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚ãƒ£ãƒƒã‚·ãƒ³ã‚°ã‚·ã‚¹ãƒ†ãƒ ã§ã‚ã‚‹ memcached ã«ã¤ã„ã¦ã€ãã®ä»•çµ„ã¿ã€å°Žå…¥ã‚„ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‹ã‚‰ã®åˆ©ç”¨æ–¹æ³•ã¾ã§ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ ã“ã®æ–‡ç« ã¯å¸¸ã«æ›¸ãã‹ã‘ã§ã™ã€‚èª¤å—è„±å—ã‚„é–“é•ã„ã®æŒ‡æ‘˜ã‚„æƒ…å ±æä¾›ãªã©ã‚’æ“è¿Žã—ã¾ã™ã€‚ ã“ã®æ–‡æ›¸ã®å¯¾è±¡è€… memcached ã®å°Žå…¥ã‚’æ¤œè¨Žã—ã¦ã„ã‚‹ã²ã¨ memcached ã‚’ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‹ã‚‰åˆ©ç”¨ã™ã‚‹æ–¹æ³•ã‚’çŸ¥ã‚ŠãŸã„ã²ã¨ memcached ã®ä»•çµ„ã¿ã‚„ä»•æ§˜ã‚’çŸ¥ã‚ŠãŸã„ã²ã¨ ç’°å¢ƒã«ã¤ã„ã¦ ä»¥ä¸‹ã®ã‚ˆã†ãªç’°å¢ƒã‚’æƒ³å®šã—ã¦ã„ã¾ã™ã€‚ UNIX ãŠã‚ˆã³ UNIX ãƒ©ã‚¤ã‚¯ OS x86 ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ memcached ã¯ x86 ä»¥å¤–ã®ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã§ã‚‚å‹•ä½œã—ã¾ã™ãŒã€ã“ã®æ–‡æ›¸ã§ã¯ x86 å‰æã¨ã—ã¦è¨˜è¿°ã—ã¾ã™ã€‚ memcached ã¨ã¯ memcached ã¯
webmarksjp 2008/07/14
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memcached: a distributed memory object caching system
What is Memcached? Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering. Memcached is simple yet powerful.
webmarksjp 2008/07/14
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PHPã§ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å‘ä¸Šã®ãŸã‚ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯è‰²ã€…:phpspoté–‹ç™ºæ—¥èªŒ
PHP Performance Series: Caching Techniques - Mike Willbanks : getting into the mind of a php developer. PHPã§ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å‘ä¸Šã®ãŸã‚ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯è‰²ã€…ãŒç´¹ä»‹ã•ã‚Œã¦ã„ã¾ã—ãŸã€‚ å–å¾—ã«æ™‚é–“ã®ã‹ã‹ã‚‹ãƒ‡ãƒ¼ã‚¿ã¯ã‚ãƒ£ãƒƒã‚·ãƒ³ã‚°ã§é«˜é€ŸåŒ–ã€ã¯å½“ãŸã‚Šå‰ã®å‡¦ç†ã§ã™ãŒã€ãã®æ–¹æ³•ã‚‚ã„ã‚ã„ã‚ã‚ã‚Šã€ã‚³ãƒ¼ãƒ‰ãŒç´¹ä»‹ã•ã‚Œã¦ã„ãŸã®ã§è§£èª¬ apc ã«ã‚ˆã‚‹ã‚ãƒ£ãƒƒã‚·ãƒ³ã‚°æ–¹æ³•( APCã®èª¬æ˜Ž ) APCã¯PHPã®ã‚³ãƒ¼ãƒ‰ã‚’å…±æœ‰ãƒ¡ãƒ¢ãƒªãªã©ã«ä¸é–“å½¢å¼ã«ã‚ãƒ£ãƒƒã‚·ãƒ¥ã—ã¦ãŠã„ã¦PHPã®å®Ÿè¡Œé€Ÿåº¦ã‚’ä¸Šã’ã‚‹ãŸã‚ã®ä»•çµ„ã¿ã§ã™ã€‚ ãã®APCã‚¨ã‚¯ã‚¹ãƒ†ãƒ³ã‚·ãƒ§ãƒ³ã‚’æœ‰åŠ¹ã«ã™ã‚‹ã¨ã€ãƒ‡ãƒ¼ã‚¿ã‚’ã‚ãƒ£ãƒƒã‚·ãƒ¥ã—ã¦ãŠããŸã‚ã®APIã‚‚æä¾›ã•ã‚Œã¾ã™ã€‚ <?php if (($config = apc_fetch('config')) === false) { requ
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Kazuho@Cybozu Labs: ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®ä¸Šæ‰‹ãªä½¿ã„æ–¹
Â« C-0.05 | ãƒ¡ã‚¤ãƒ³ | cygwin + mod_perl Â» 2006å¹´02æœˆ08æ—¥ ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®ä¸Šæ‰‹ãªä½¿ã„æ–¹ ã‚ãƒ£ãƒƒã‚·ãƒ¥ã¨ã„ã£ã¦ã‚‚ã€ã‚¦ã‚§ãƒ–ãƒ–ãƒ©ã‚¦ã‚¶ã‚„ã‚¦ã‚§ãƒ–ãƒ—ãƒã‚ã‚·ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®ã“ã¨ã§ã™ã€‚ ãƒ»Internet Explorer ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®å‹•ä½œ Internet Explorer ã¯ã€åŒä¸€ã‚¦ã‚£ãƒ³ãƒ‰ã‚¦å†…ã§è¤‡æ•°å›žåŒã˜ã‚¦ã‚§ãƒ–ãƒšãƒ¼ã‚¸ã‚’èªã¿è¾¼ã‚€å ´åˆã€ï¼’å›žç›®ä»¥é™ã¯ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®ãƒ‡ãƒ¼ã‚¿ã‚’ä½¿ç”¨ã—ã¾ã™ (ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆè¨å®šã®å ´åˆã€ Last-Modified ã¾ãŸã¯ Expires ãƒ˜ãƒƒãƒ€ãŒã¤ã„ã¦ã„ã‚‹å ´åˆã®ã¿)ã€‚ ã¤ã¾ã‚Šã€åŒã˜ã‚¦ã‚£ãƒ³ãƒ‰ã‚¦ã®ä¸ã§ã€ ãƒšãƒ¼ã‚¸A ã‚’èªã¿ã€æ¬¡ã«ãƒšãƒ¼ã‚¸B ã‚’èªã¿ã€ãã—ã¦ãƒšãƒ¼ã‚¸A ã‚’å†ã³èªã¿è¾¼ã‚€ã‚ˆã†ãªã‚±ãƒ¼ã‚¹ã§ã¯ã€ï¼’å›žç›®ã«ãƒšãƒ¼ã‚¸ A ã‚’è¡¨ç¤ºã™ã‚‹éš›ã«ã¯ã‚ãƒ£ãƒƒã‚·ãƒ¥ã®ãƒ‡ãƒ¼ã‚¿ãŒä½¿ç”¨ã•ã‚Œã€ã‚¦ã‚§ãƒ–ã‚µãƒ¼ãƒã¸ã®å†å•ã„åˆã‚ã›ã¯è¡Œã‚ã‚Œã¾ã›ã‚“ã€‚ ã¾ãŸã€ Last-Modified ãƒ˜ãƒƒãƒ€ã¨ Expire
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ConsistentHashing - ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãƒ»ãƒãƒƒã‚·ãƒ¥æ³•
ConsistentHashing - ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãƒ»ãƒãƒƒã‚·ãƒ¥æ³• ç›®æ¬¡ ã“ã®æ–‡æ›¸ã«ã¤ã„ã¦ ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãƒ»ãƒãƒƒã‚·ãƒ¥æ³• å®Ÿä¾‹ å®Ÿè£… ç”¨é€” ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãƒ»ãƒãƒƒã‚·ãƒ¥æ³• ã“ã®æ–‡æ›¸ã«ã¤ã„ã¦ "Tom White's Blog: Consistent Hashing" ã®æ—¥æœ¬èªžè¨³ã§ã™. http://weblogs.java.net/blog/tomwhite/archive/2007/11/consistent_hash.html æŽ¨æ•²æ“è¿Ž: èª¤è¨³, ã‚¿ã‚¤ãƒ, è¨³èªžã®ä¸çµ±ä¸€, ãã®ã»ã‹... åŽŸæ–‡ã®ãƒ©ã‚¤ã‚»ãƒ³ã‚¹: http://creativecommons.org/licenses/by-nc-sa/2.0/ ç§ã¯ä»Šã¾ã§ã«ä½•åº¦ã‹ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãƒ»ãƒãƒƒã‚·ãƒ¥æ³•ã«ã¨ã‚Šãã‚“ã ã“ã¨ãŒã‚ã‚‹ã€‚ ã“ã®ã‚¢ã‚¤ãƒ‡ã‚¢ã‚’ã‚ã‚‰ã‚ã—ãŸè«–æ–‡ ( David Karger ã‚‰ã«ã‚ˆã‚‹ Consistent Hashing and R
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Polipo â€• a caching web proxy
Polipo is no longer maintained When it was first written, Polipo was probably the best HTTP proxy available. Since then, the web has changed, and HTTP proxies are no longer useful: most traffic is encrypted, and a web proxy merely acts as a dumb intermediary for encrypted traffic. Polipo will no longer be maintained. Here are some alternatives: if you need your HTTP traffic to originate from a rem
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IE ã® Ajax (XMLHTTP) ã§ã€é€šä¿¡ãŒè¡Œã‚ã‚ŒãŸã‹ã‚ãƒ£ãƒƒã‚·ãƒ¥ãŒä½¿ã‚ã‚ŒãŸã‹ã‚’åˆ¤å®šã™ã‚‹æ–¹æ³• - ITæˆ¦è¨˜
ã©ã†ã‚„ã‚‰ ä»¥ä¸‹ã®æ–¹æ³•ã§åˆ¤å®šã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã‚ˆã†ã§ã™ã€‚ // ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ä½œã‚‹ var req = new ActiveXObject('Microsoft.XMLHTTP'); // ãƒ•ãƒ©ã‚°ã®æº–å‚™ var sended = false; // readystatechange ã‚¤ãƒ™ãƒ³ãƒˆã‚’å¾…ã¤ req.onreadystatechange = function() { if (req.readyState == 4) { // ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«å˜åœ¨ã—ãªã„å ´åˆ if (sended) { alert('loaded'); } // ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«å˜åœ¨ã™ã‚‹å ´åˆ else { alert('cached'); } } }; // é€šä¿¡é–‹å§‹ req.open('GET', 'hoge'); req.send(); // ãƒ•ãƒ©ã‚°ã‚’ç«‹ã¦ã‚‹ sended = true; è§£èª¬ IE ã§ã¯ã€ã‚ãƒ£ãƒƒã‚·ãƒ¥
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mixi Engineersâ€™ Blog Â» libmemcachedã§å¿«é€Ÿã‚ãƒ£ãƒƒã‚·ãƒ¥ç”Ÿæ´»
ã¿ã‚“ãªå¤§å¥½ããªmemcachedã€‚ä»Šæ—¥ã¯Brian Akerã®Cè¨€èªžç”¨ã‚¯ãƒ©ã‚¤ã‚¨ãƒ³ãƒˆãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ã¤ã„ã¦æ›¸ããŸã„ã¨æ€ã„ã¾ã™ã€‚æ—¥æœ¬èªžã®æƒ…å ±ãŒã¨ã¦ã‚‚å°‘ãªãã€ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚‚è‹±èªžã ã‘ã¨ã„ã†äº‹ã§èˆˆå‘³ã¯ã‚ã‚‹ã‘ã©æ‰‹ã‚’ã¤ã‘ã¦ã„ãªã„ã¨ã„ã†æ–¹ã®ãŠå½¹ã«ç«‹ã¦ã‚ŒãŸã‚‰ãªã¨æ€ã„ã¾ã™ã€‚ æœ¬é¡Œã®å‰ã« why libmemcached? æ—¢ã«libmemcacheãŒå˜åœ¨ã™ã‚‹ã®ã«ä½•æ•…ã€libmemcachedï¼Ÿã‹ã¨è¨€ã†ã¨ç†ç”±ã®ä¸€ã¤ã¯æœ€è¿‘libmemcacheã®é–‹ç™ºãŒæ¢ã¾ã£ãŸã‹ã‚‰ã§ã™ã€‚æœ¬å®¶ã§ã¯ãã‚ŒãŒç†ç”±ã§libmemcacheã§ã¯ãªãlibmemcachedã‚’æŽ¨å¥¨ã—ã¦ã¾ã™ãã€‚åˆã€åŠ¹çŽ‡çš„ãªãƒ¡ãƒ¢ãƒªä½¿ç”¨ã€Consistent Hashingã€æ§˜ã€…ãªãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã€æ–°ã—ã„ã‚ªãƒšãƒ¬ãƒ¼ã‚¿ã«å¯¾å¿œã—ã¦ã„ã‚‹ç‰ã¨ã„ã†å®£ä¼æ–‡å¥ãŒã‚ã‚Šã¾ã™ã€‚apr_memcacheã¨ã„ã†ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚‚å˜åœ¨ã—ã¾ã™ãŒè‡ªåˆ†ã¯ä½¿ã£ãŸäº‹ãŒãªã„ãŸã‚ãƒŽãƒ¼ã‚³ãƒ¡ãƒ³ãƒˆã€‚ ãŸã ã€æŽ¨å¥¨ã•
webmarksjp 2008/07/14
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webmarksjp 2008/07/14
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performance

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webmarksjp 2008/07/13
JavaScript

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program

tips

tuning

ã‚ãƒ£ãƒƒã‚·ãƒ¥

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webmarksjp 2008/07/13
javascript

http

ajax

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cache
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webmarksjp 2008/07/13
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cache

performance

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webmarksjp 2008/07/12
HTTPHeader

HTTP

apache

network

browser

cache

Perl
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webmarksjp 2008/07/12
http

apache

cache

apache-module

performance

mt
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