[B! memcached] nubesã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

nubes id:nubes

memcachedã«é–¢ã™ã‚‹nubesã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (16)

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ç±³FacebookãŒå¤§è¦æ¨¡memcachedå®Ÿè£…ã®ãŸã‚ã®ã€Œmcrouter 1.0ã€ã‚’ãƒªãƒªãƒ¼ã‚¹ | OSDN Magazine
ç±³Facebookã¯9æœˆ15æ—¥ã€memcachedãƒ—ãƒãƒˆã‚³ãƒ«ç”¨ã®ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã€Œmcrouterã€ã‚’ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã¨ã—ã¦å…¬é–‹ã—ãŸã€‚memcachedã‚’ã‚¯ãƒ©ã‚¹ã‚¿åŒ–ã™ã‚‹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã€å®Ÿã‚µãƒ¼ãƒãƒ¼ã ã‘ã§ãªãAmazon Web Servicesï¼ˆAWSï¼‰ã®ã‚¯ãƒ©ã‚¦ãƒ‰ç’°å¢ƒã§ã‚‚åˆ©ç”¨ã§ãã‚‹ã€‚ mcrouterã¯åŒç¤¾ãŒ2013å¹´ã«ç™ºè¡¨ã—ã¦ã„ã‚‹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã€memcachedã‚µãƒ¼ãƒãƒ¼ã¨ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®é–“ã«çµ„ã¿è¾¼ã‚€ã“ã¨ã§memcachedã‚’ä½¿ã£ãŸåˆ†æ•£ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚·ã‚¹ãƒ†ãƒ ã‚’æ§‹ç¯‰ã§ãã‚‹ã€‚memchaced ASCIIãƒ—ãƒãƒˆã‚³ãƒ«ã«å¯¾å¿œã—ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‹ã‚‰ã®ãƒªã‚¯ã‚¨ã‚¹ãƒˆã«å¯¾ã—ã¦ã¯memcachedã‚µãƒ¼ãƒãƒ¼ã®ã‚ˆã†ã«åå¿œã—ã€ã¾ãŸmemcachedã‚µãƒ¼ãƒãƒ¼å´ã«å¯¾ã—ã¦ã¯memchacedã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã®ã‚ˆã†ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã€‚ãƒžãƒ«ãƒã‚¯ãƒ©ã‚¹ã‚¿ã‚’ã‚µãƒãƒ¼ãƒˆã—ã€ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãƒ—ãƒ¼ãƒªãƒ³ã‚°ã€ãƒ—ãƒ¬ãƒ•ã‚£ãƒƒã‚¯ã‚¹ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã€ã‚ªãƒ³ãƒ©ã‚¤
nubes 2014/09/17
memcached

facebook
ãƒªãƒ³ã‚¯
Achieving 10Gbps Line-rate Key-value Stores with FPGAs | USENIX
Michaela Blott, Kimon Karras, Ling Liu, and Kees Vissers, Xilinx Inc.;Â Jeremia BÃ¤r and Zsolt IstvÃ¡n, ETH ZÃ¼rich Distributed in-memory key-value stores such as memcachedÂ have become a critical middleware applicationÂ within current web infrastructure. However, typical x86-based systems yield limited performance scalability andÂ high power consumption as their architecture with itsÂ optimization for si
nubes 2013/09/08
FPGA

memcached
ãƒªãƒ³ã‚¯
yrmcds by cybozu
yrmcds memcached compatible KVS with master/slave replication View on GitHub Download .zip Download .tar.gz yrmcds is a memory object caching system with master/slave replication. Currently, yrmcds supports two protocols: the first is an enhanced memcached, and another is a protocol to implement distributed resource counters. Since the memcached protocol is perfectly compatible with the original i
nubes 2013/07/09
memcached compatible KVS with master/slave replication

memcached
ãƒªãƒ³ã‚¯
MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’æ¤œè¨¼ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ æ¡ˆä»¶ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—ãŸï½œæŠ€è¡“ãƒ–ãƒã‚°ï½œåŒ—æµ·é“æœå¹Œå¸‚ãƒ»å®®åŸŽçœŒä»™å°å¸‚ã®VRãƒ»ã‚²ãƒ¼ãƒ ãƒ»ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º ã‚¤ãƒ³ãƒ•ã‚£ãƒ‹ãƒƒãƒˆãƒ«ãƒ¼ãƒ—
ãƒ›ãƒ¼ãƒ æŠ€è¡“ãƒ–ãƒã‚° MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’æ¤œè¨¼ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ æ¡ˆä»¶ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—ãŸ MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’æ¤œè¨¼ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ æ¡ˆä»¶ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—ãŸ matsuiã§ã™ã€‚ å…ˆæ—¥6/1ã«è¡Œã‚ã‚ŒãŸç¬¬å››å›žæœå¹ŒMySQLå‹‰å¼·ä¼šã®ä¸ã§ã€MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ã¾ã—ãŸã®ã§ã€è¨˜äº‹ã«ã—ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ InnoDB Memcached Pluginã¨ã¯ ã€ŒInnoDB Memcached Pluginã€ã¨ã¯ã€MySQL5.6ã‹ã‚‰ä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ãŸã€SQLã‚’ä½¿ã‚ãšMemcachedãƒ—ãƒãƒˆã‚³ãƒ«ã‚’ä½¿ã£ã¦InnoDBã®ãƒ‡ãƒ¼ã‚¿ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ãŸã‚ã®ã‚‚ã®ã§ã™ã€‚ ä¸»ãªãƒ¡ãƒªãƒƒãƒˆã¯ãã®é«˜
nubes 2013/06/06
ãµã‚€ãµã‚€ã€‚

MySQL

memcached
ãƒªãƒ³ã‚¯
ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§ã‚‚ãƒžãƒ«ãƒã‚³ã‚¢CPUã‚’æ´»ã‹ã›ãªã„ä»¶ - blog.nomadscafe.jp
ã‚‚ã£ã¨è©³ã—ã„æ–¹ã®ãƒ•ã‚©ãƒãƒ¼å‹Ÿé›†ã§ã™ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã«ãªã£ã¦ã‚‚ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å‡¦ç†ãŒåˆ†æ•£ã•ã‚Œãªã‘ã‚Œã°ãƒžãƒ«ãƒã‚³ã‚¢ã‚’æ´»ã‹ã›ãªã„å…¸åž‹çš„ãªä¾‹ã§ã™ã€‚id:viverã®å¤æ©‹ã•ã‚“ãŒs100kpsã¨ã—ã¦ã‚ã’ã¦ã„ãŸä»¶ã«ã‚‚è¿‘ã„ã‹ã‚‚ã€‚ memcachedã§ç¾è±¡ã‚’ç¢ºèªã—ã¾ã™ã€‚æœ€è¿‘ã®memcachedã¯ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§å‹•ãã‚ˆã†ã«ãªã£ã¦ã„ã‚‹ã®ã§ã€ã¾ãšã¯ãã‚Œã‚’ç¢ºèªã—ã¾ã™ã€‚ $ memcached-tool localhost stats|grep threads threads 4 ã‚¹ãƒ¬ãƒƒãƒ‰ãŒ4ã¤ã§èµ·å‹•ã—ã¦ã„ã¾ã™ã€‚ è² è·ãŒãã‚Œãªã‚Šã«ã‚ã‚‹çŠ¶æ…‹(8000req/secç¨‹åº¦)ã§ã€ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ã§topã‚’é–‹ãã€ã€Œ1ã€ã‚ãƒ¼ã‚’æŠ¼ã—ã¦ã€CPUã”ã¨ã®ä½¿ç”¨çŽ‡ã‚’è¡¨ç¤ºã—ã¾ã™ã€‚(ä¾‹ã¯Fedora8 kernel-2.6.23) Tasks: 77 total, 1 running, 76 sleeping, 0 stopped, 0
nubes 2013/05/29
memcached

linux

network
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Scaling Memcache at Facebook | USENIX
by Michael Piatek Responsiveness is essential for web services. Speed drives user engagement, which drives revenue. To reduce response latency, modern web services are architected to serve as much as possible from in-memory caches. The structure is familiar: a database is split among servers with caches for scaling reads. Over time, caches tends to accumulate more responsibility in the storage sta
nubes 2013/04/16
facebook

memcached
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Etsy Engineering | mctop - a tool for analyzing memcache get traffic
Here at Etsy we (ab)use our memcache infrastructure pretty heavily as a caching layerÂ between our applications and our database tiers. We functionally partition our memcacheÂ instances into small pools and overall it works fabulously well. We have however suffered occasionally from what we call "hot keys". What is a "Hot" key? A "hot key" is a single key hashed to an individual memcache instance wi
nubes 2012/12/14
memcached

tool
ãƒªãƒ³ã‚¯
A Bunch of Great Strategies for Using Memcached and MySQL BetterÂ Together - High Scalability -
The primero recommendation for speeding up a website is almost always to add cache and more cache. And after that add a little more cache just in case. Memcached is almost always given as the recommended cache to use. What we don't often hear is how to effectively use a cache in our own products. MySQL hosted two excellent webinars (referenced below) on the subject of how to deploy and use memcach
nubes 2012/05/06
MySQL

memcached
ãƒªãƒ³ã‚¯
ç¬¬1å›žã€€memcachedã®èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’æŠŠæ¡ã—ã‚ˆã† | gihyo.jp
1.4ç³»ã§æ–°ã—ãè¿½åŠ ã•ã‚ŒãŸä¸»ãªæ©Ÿèƒ½ã—ã¦ã¯ ãƒã‚¤ãƒŠãƒªãƒ—ãƒãƒˆã‚³ãƒ«ã®å°Žå…¥ ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã®æ¨™æº–åŒ– çµ±è¨ˆã®å¼·åŒ– ãªã©ãŒä¸Šã’ã‚‰ã‚Œã¾ã™ã€‚ã“ã®1.4ç³»ã®æ©Ÿèƒ½ã®è©³ç´°ã«ã¤ã„ã¦ã¯å‰å‚å¾¹æ°ã®é€£è¼‰ã€Œmemcached 1.4ã®åˆ°æ¥ã€ãŒå‚è€ƒã¨ãªã‚Šã¾ã™ã€‚ã“ã“ã§ã¯ãƒãƒ¼ã‚¸ãƒ§ãƒ³1.2.5ã¨æœ€æ–°ã®1.4.5ã®èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’æ¯”è¼ƒã—ãªãŒã‚‰ã€æ–°ã—ãè¿½åŠ ã•ã‚ŒãŸæ©Ÿèƒ½ã‚„å®Ÿéš›ã®é‹ç”¨ã§ç”¨ã„ã‚‰ã‚Œã‚‹èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ 1.2ç³»ã¨1.4ç³»ã®èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®é•ã„ ã¾ãšã€memcachedã®èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®ä¸€è¦§ï¼ˆãƒ˜ãƒ«ãƒ—ï¼‰ã‚’ç¢ºèªã—ã¾ã—ã‚‡ã†ã€‚memcachedã®ãƒ˜ãƒ«ãƒ—ã‚’å‡ºåŠ›ã™ã‚‹ã«ã¯ã€ã€Œâ -hã€ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ä½¿ã„ã¾ã™ã€‚ $ memcached -h memcached 1.x.x -p <num> TCP port number to listen on (default: 11211) -U <num> UDP port number t
nubes 2012/02/21
memcached
ãƒªãƒ³ã‚¯
memcached | feedforce Engineers' blog
ä½•ï¼Ÿ ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ãƒ¡ãƒ¢ãƒªã«ã‚ãƒ£ãƒƒã‚·ãƒ¥ã™ã‚‹ãƒ‡ãƒ¼ãƒ¢ãƒ³ã€‚ å‹•çš„ãƒšãƒ¼ã‚¸ã‚’æŒã¤ã‚¦ã‚§ãƒ–ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®è£å´ã§å‹•ããƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã¸ã®è² è·ã‚’è»½æ¸›ã•ã›ã‚‹ã“ã¨ã‚’ç›®çš„ã«ãƒ‡ã‚¶ã‚¤ãƒ³ã•ã‚Œã¦ã„ã‚‹ã€‚ - å…¬å¼ã‚µã‚¤ãƒˆ memcached: a distributed memory object caching system ç‰¹å¾´ ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ãƒ¡ãƒ¢ãƒªä¸Šã«ã‚ãƒ£ãƒƒã‚·ãƒ¥ è¤‡æ•°ãƒ›ã‚¹ãƒˆé–“ã§ã‚ãƒ£ãƒƒã‚·ãƒ¥å…±æœ‰å¯èƒ½ï¼ˆãƒªãƒ¢ãƒ¼ãƒˆã‹ã‚‰ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«ã‚¢ã‚¯ã‚»ã‚¹å¯èƒ½ï¼‰ å„è¨€èªžç”¨ã®ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒãã‚ã£ã¦ã¾ã™ å®Ÿç¸¾è±Šå¯Œ ã‚ˆãã‚ã‚‹ç”¨é€” ã‚»ãƒƒã‚·ãƒ§ãƒ³ã‚¹ãƒˆã‚¢ DBã¸ã®ã‚¯ã‚¨ãƒªçµæžœã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãƒ¬ãƒ™ãƒ«ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆå…±æœ‰ï¼ˆé™çš„ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ï¼‰ ã‚»ãƒƒã‚·ãƒ§ãƒ³ã‚¹ãƒˆã‚¢ è¤‡æ•°ã‚µãƒ¼ãƒé–“ã®ã‚»ãƒƒã‚·ãƒ§ãƒ³æƒ…å ±å…±æœ‰ DBã‚’ä½¿ã†æ–¹æ³•ã¨æ¯”ã¹ã¦è² è·ãŒã‹ã‹ã‚‰ãªãã¦ã†ã‚Œã—ã„ ã‚»ãƒƒã‚·ãƒ§ãƒ³ã‚¹ãƒˆã‚¢ã¨ã—ã¦ã®å•é¡Œç‚¹ ãƒ¬ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ä»•çµ„ã¿ãŒãªã„ã€‚ ã®ã§ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®æ€§è³ªã«ã‚ˆã£ã¦
nubes 2012/01/23
memcached

PHP
ãƒªãƒ³ã‚¯
ãªãœmemcachedã‚’ã‚»ãƒƒã‚·ãƒ§ãƒ³ç®¡ç†ç”¨ã«ä½¿ã†ã®ã‹
Blog Search when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: ${entry.path} [in template "__entry.ftlh" at line 3, column 25] - Reached through: #include "__entry.ftlh" [in template "entry.ftlh" at
nubes 2012/01/23
memcached

session
ãƒªãƒ³ã‚¯
ã¯ã¦ãªã‚°ãƒ«ãƒ¼ãƒ—ã®çµ‚äº†æ—¥ã‚’2020å¹´1æœˆ31æ—¥(é‡‘)ã«æ±ºå®šã—ã¾ã—ãŸ - ã¯ã¦ãªã®å‘ŠçŸ¥
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nubes 2011/08/30
perl

memcached
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ã¯ã˜ã‚ã« ã‚¢ã‚¯ã‚»ã‚¹ãŒæ€¥å¢—ã™ã‚‹ã¨ã€å¿œç”æ™‚é–“ãŒè‘—ã—ãæ‚ªåŒ–ã™ã‚‹ã‚µã‚¤ãƒˆã¯ã‚ã‚Šã¾ã›ã‚“ã‹ï¼Ÿ æ™®æ®µã¯200ãƒŸãƒªç§’ä»¥å†…ã§å®‰å®šã—ã¦ã‚¢ã‚¯ã‚»ã‚¹ã‚’ã•ã°ã„ã¦ã„ã‚‹ã®ã«ã€ã‚¤ãƒ™ãƒ³ãƒˆã‚„ã‚‰ã‚ãƒ£ãƒ³ãƒšãƒ¼ãƒ³ã‚„ã‚‰ã‚’é–‹å§‹ã—ãŸçž¬é–“ã‹ã‚‰ã€æ™®æ®µã®ï¼’å€ã‚„ï¼“å€ã®ã‚¢ã‚¯ã‚»ã‚¹ãŒæ®ºåˆ°ã—ã€ãã®çµæžœã€ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ ãŒ3ç§’ã¨ã‹9ç§’ã¨ã‹ã‹ã‹ã‚‹ã‚ˆã†ã«ãªã£ã¦ã—ã¾ã†ã“ã¨ã£ã¦ã‚ã‚Šã¾ã™ã‚ˆãã€‚ ã‚ã‚‹ã‚µã‚¤ãƒˆã®å®ŸçŠ¶ ã¤ã„å…ˆæ—¥ã¾ã§ã€ãã‚“ãªã‚µã‚¤ãƒˆãŒç§ã®ç›®ã®å‰ã«ã‚‚ã‚ã‚Šã¾ã—ãŸã€‚è‡ªç¤¾ã§é‹å–¶ã—ã¦ã„ã‚‹æŸã‚½ãƒ¼ã‚·ãƒ£ãƒ«ç³»ã®ã‚µã‚¤ãƒˆãªã‚“ã§ã™ãŒã€ã‚¤ãƒ™ãƒ³ãƒˆé–‹å§‹æ™‚åˆ»ã¨åŒæ™‚ã«ã‚¢ã‚¯ã‚»ã‚¹æ•°ãŒæ€¥å¢—ã™ã‚‹ã®ã§ã™ã€‚ã¨ã¯ã„ãˆã€æ‰€è©®ã¯æ™®æ®µã®2å€ã¨ã‹3å€ç¨‹åº¦ã®æ•°ãªã®ã ã‹ã‚‰ã€å°‘ãªãã¨ã‚‚1ç§’ä»¥å†…ã«ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚’è¿”ã›ã‚‹ãã‚‰ã„ã®æ€§èƒ½ã¯ç¶æŒã—ãŸã„ã‚‚ã®ã§ã™ã€‚ ã—ã‹ã—å®Ÿéš›ã¯å›°ã£ãŸã“ã¨ã«ã€å¿œç”ã«3ç§’ä»¥ä¸Šã‚‚ã‹ã‹ã£ã¦ã—ã¾ã†å‡¦ç†ãŒå¤§é‡ã«ç™ºç”Ÿã—ã¦ã—ã¾ã†çŠ¶æ³ã«é™¥ã£ã¦ã—ã¾ã£ã¦ã„ã¾ã—ãŸã€‚ã“ã‚Œã¯ãã£ã¨ã€ã©ã“ã‹ã«ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ãŒã‚ã‚‹ã«é•ã„ã‚ã‚Šã¾ã›ã‚“ã€‚ ä»®èª¬ã‚’ç«‹
nubes 2011/08/24
tuning

memcached
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http://code.sixapart.com/svn/memcached/trunk/server/doc/protocol.txt
Protocol -------- Clients of memcached communicate with server through TCP connections. (A UDP interface is also available; details are below under "UDP protocol.") A given running memcached server listens on some (configurable) port; clients connect to that port, send commands to the server, read responses, and eventually close the connection. There is no need to send any command to end the sessi
nubes 2011/02/12
memcached
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mixiå¤§è¦æ¨¡éšœå®³ã«ã¤ã„ã¦ è§£æ˜Žç·¨ - mixi engineer blog
ã“ã‚“ã«ã¡ã¯ã€ã‚·ã‚¹ãƒ†ãƒ æœ¬éƒ¨æŠ€è¡“éƒ¨ãŸã‚“ã½ã½Gã®æ£®æœ¬ã§ã™ã€‚ å…ˆæ—¥ã®mixiå¤§è¦æ¨¡éšœå®³ã®åŽŸå› ã¨ãªã£ãŸmemcachedã®ä¸å…·åˆã®è©³ç´°ãªè§£æ˜ŽãŒã§ãã¾ã—ãŸã€‚ å†æ¥é€±ã¾ã§ç™ºè¡¨ã‚’è¦‹åˆã‚ã›ã‚ˆã†ã¨æ€ã£ãŸã®ã§ã™ãŒã€æ—©ããŠä¼ãˆã—ãŸã»ã†ãŒã„ã„ã¨æ€ã„ã¾ã—ãŸã®ã§å…¬é–‹ç™ºè¡¨è‡´ã—ã¾ã™ã€‚ memcachedã¨libevent memcachedã¯libeventã¨ã„ã†ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½¿ç”¨ã—ã¦ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‹ã‚‰ã®è¦æ±‚(æŽ¥ç¶šã€ã‚³ãƒžãƒ³ãƒ‰é€ä¿¡)ã‚’å‡¦ç†ã—ã¦ã„ã¾ã™ã€‚ libeventã‚’ä½¿ç”¨ã™ã‚‹ã«ã¯event_baseã¨ã„ã†æ§‹é€ ä½“ã‚’ç”¨ã„ã¾ã™ã€‚ main threadã¯main_baseã‚’ä½¿ç”¨ã—ã¾ã™ã€‚ static struct event_base *main_base; ... int main (int argc, char **argv) { ... main_base = event_init(); ... /* enter the ev
nubes 2011/01/28
mixi

memcached
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memcached ã¨ libevent â€“ reading memcached(2) : MYH
ä½•ã‹ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’å—ã‘ä»˜ã‘ã¦å‡¦ç†ã‚’ã—ã¦è¿”ã™ã¨ã„ã†ã€ã‚µãƒ¼ãƒãƒ¼ã§ã‚ˆãè¡Œã‚ã‚Œã‚‹å‡¦ç†ã‚’è€ƒãˆã¦ã¿ã¾ã—ã‚‡ã†ã€‚ä¸€åº¦ã«å¤šæ•°ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’å—ã‘ä»˜ã‘ã¦åŒæ™‚ä¸¦è¡Œçš„ã«å‡¦ç†ãŒè¡Œãˆã‚‹ã‚ˆã†ã«ã—ãŸã„å ´åˆã€ï¼‘ã¤ã®ã‚„ã‚Šæ–¹ã¨ã—ã¦ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰åŒ–ã—ã¦ã‚ã‚‹ã‚¹ãƒ¬ãƒƒãƒ‰ã§ accept(2) ã—ã¦ãŠã„ã¦ã€ãã‚Œã‚’åˆ¥ã®ã‚¹ãƒ¬ãƒƒãƒ‰ï¼ˆãƒ¯ãƒ¼ã‚«ãƒ¼ã‚¹ãƒ¬ãƒƒãƒ‰ï¼‰ã«æŒ¯ã‚Šåˆ†ã‘ã€ãã®ã‚¹ãƒ¬ãƒƒãƒ‰ã§ã¯ recv(2) / send(2) ã§é€šä¿¡ã‚’è¡Œã†ã¨ã„ã†æ–¹æ³•ãŒã‚ã‚Šã¾ã™ã€‚ã—ã‹ã—ã€ãã®å ´åˆã‚¹ãƒ¬ãƒƒãƒ‰æ•°ã‚’è¶…ãˆã‚‹ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’åŒæ™‚ã«æŒã‘ãªã„ã¨ã„ã†æ¬ ç‚¹ãŒã‚ã‚Šã¾ã™ã€‚recv ã¯ã¾ã ãƒ‡ãƒ¼ã‚¿ãŒæ¥ã¦ãªã„ã¨ã„ã†å ´åˆã«ã¯å¾…ã¡ãŒç™ºç”Ÿã—ã¾ã™ã®ã§ã€å¾…ã£ã¦ã„ã‚‹é–“ãã®ã‚¹ãƒ¬ãƒƒãƒ‰ã¯éŠã‚“ã§ã—ã¾ã£ã¦ç„¡é§„ã«ãªã£ã¦ã—ã¾ã„ã¾ã™ã€‚ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ CPU ã®ã‚³ã‚¢æ•°ã‚ˆã‚Šå¤šã‚ã«å–ã£ã¦ãŠã‘ã°ãã‚Œã¯å›žé¿ã§ãã¾ã™ãŒã€ã‚¹ãƒ¬ãƒƒãƒ‰åˆ‡ã‚Šæ›¿ãˆã®ã‚ªãƒ¼ãƒãƒ¼ãƒ˜ãƒƒãƒ‰ãŒã‹ã‹ã‚Šã€ã¾ãŸã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ç”Ÿæˆå‡ºæ¥ã‚‹å€‹æ•°ã®ä¸Šé™ã‚‚åˆã£ã¦ã€ã‚ã¾ã‚Šå¤šæ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’ã•ã°ãã“ã¨
nubes 2011/01/26
memcached

libevent

c
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