http://blog.suz-lab.com/2012/12/twemproxyelasticacheelasticache.html
ncコマンドã§memcachedã«ã‚³ãƒžãƒ³ãƒ‰ã‚’é€ã‚Šã¤ã‘ã‚‹
開発用ã®ã‚µãƒ¼ãƒã§memcachedã®ã‚ャッシュを全消ã—ã™ã‚‹ãŸã‚ã« flush_all をよã使ã†ã‚“ã ã‘ã©ã€telnetã§å¯¾è©±çš„ã«ã‚³ãƒžãƒ³ãƒ‰é€ã‚Šè¾¼ã‚€ã®ã ã‚‹ã„ã®ã§ãã†ã„ã†å ´åˆã¯nc(netcat)を使ãˆã°ã„ã„よーã€ã¨ã„ã†è©±ã€‚ 下記ã¯localhostã®11211ã§LISTENã—ã¦ã‚‹memcachedã«flush_allã‚’é€ã‚Šã¤ã‘る例。 $ echo flush_al | nc localhost 11211 匿å ã•ã‚“ã®ã‚³ãƒ¡ãƒ³ãƒˆ... The RNG continues to shuffle the remaining forty seven cards till the "Deal button" is pressed again-at which level the discarded cards are replaced. My second profitable slots strate
memcached ãŠã™ã™ã‚起動オプションã¾ã¨ã‚ - blog.nomadscafe.jp
ã“ã“を書ãç›´ã—ã¦è»¢è¼‰ memcachedã«é–¢ã™ã‚‹è¨˜äº‹ã¯ã€Œç¬¬1回　memcachedã®åŸºæœ¬ï¼šmemcachedを知り尽ãã™ï½œgihyo.jp … 技術評論社ã€ãªã©ä½•å›žã‹æ›¸ã„ã¦ã„ã¾ã™ãŒã€æœ€è¿‘ã®memcachedã§ã®èµ·å‹•ã‚ªãƒ—ションã®ãŠã™ã™ã‚ã‚’ã¾ã¨ã‚ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ãªãŠã“ã®è¨˜äº‹ã¯Memcached Advent Calendarã§ã¯ã‚ã‚Šã¾ã›ã‚“。 ã¾ã¨ã‚ã‚‹ã¨ã“ã‚“ãªæ„Ÿã˜ã§ã™ã€‚ $ memcached -v -p 11211 -U 0 -u memcached -m 1024 \ -c 100000 -t 4 -C -B ascii ã²ã¨ã¤ãšã¤ç°¡å˜ã«ç´¹ä»‹ã—ã¾ã™ã€‚ -v ãƒã‚°å‡ºåŠ› ãƒã‚°ã‚’ verbose モードã§èµ·å‹•ã—ã¾ã™ã€‚エラーやè¦å‘ŠãŒè¡¨ç¤ºã•ã‚Œã¾ã™ã€‚弊社ã§ã¯memachedã‚’daemontools経由ã§èµ·å‹•ã—ã€ãƒã‚°ã‚’記録ã—ã¦ã„ã¾ã™ã€‚ -v -vオプション㯠-vvã€-vvv 㨠v ã®æ•°ã‚’増やã™äº‹ã§
MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’検証ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ 案件ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—ãŸï½œæŠ€è¡“ブãƒã‚°ï½œåŒ—æµ·é“æœå¹Œå¸‚・宮城県仙å°å¸‚ã®VR・ゲーム・システム開発 インフィニットループ
ホーム技術ブãƒã‚° MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’検証ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ 案件ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—㟠MySQL5.6ã®æ–°æ©Ÿèƒ½ã€ŒInnoDB Memcached Pluginã€ã®åˆ†é›¢ãƒ¬ãƒ™ãƒ«ã‚’検証ã—ã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ 案件ã«ä½¿ãˆãã†ã‹æ¤œè¨¼ã—ã¦ã¿ã¾ã—㟠matsuiã§ã™ã€‚ 先日6/1ã«è¡Œã‚ã‚ŒãŸç¬¬å››å›žæœå¹ŒMySQL勉強会ã®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¯ 「InnoDB Memcached Pluginã€ã¨ã¯ã€MySQL5.6ã‹ã‚‰ä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ãŸã€SQLを使ã‚ãšMemcachedプãƒãƒˆã‚³ãƒ«ã‚’使ã£ã¦InnoDBã®ãƒ‡ãƒ¼ã‚¿ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ãŸã‚ã®ã‚‚ã®ã§ã™ã€‚ 主ãªãƒ¡ãƒªãƒƒãƒˆã¯ãã®é«˜
Rails ã§ã€Controller ã«å®šç¾©ã•ã‚Œã¦ã„ã‚‹ action を一度ã«å–å¾—ã™ã‚‹æ–¹æ³•ã¯ã‚ã‚Šã¾ã™ã‹ï¼Ÿ - QA@IT
å¹³ç´ ã‚ˆã‚ŠQAï¼ ITã‚’ã”利用ã„ãŸã ãã€èª ã«ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ QAï¼ ITã¯ã€Œè³ªå•ã‚„回ç”を『共有ã€ã—『編集ã€ã—ã¦ã„ãã“ã¨ã§ãƒ™ã‚¹ãƒˆãªQAã‚’è“„ç©ã§ãã‚‹ã€ITエンジニアã®ãŸã‚ã®å•é¡Œè§£æ±ºã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ãƒ¼ã€ã¨ã—ã¦ç´„7å¹´é–“é‹å–¶ã‚’ã—ã¦ãã¾ã—ãŸã€‚ã“ã‚Œã¾ã§ã‚µãƒ¼ãƒ“スを続ã‘ã‚‹ã“ã¨ãŒã§ããŸã®ã¯ã€QAï¼ ITã®ã‚³ãƒ³ã‚»ãƒ—トã«å…±æ„Ÿã‚’ã„ãŸã ãã€é©åˆ‡ãªè³ªå•ã‚„回ç”ã‚’ãŠå¯„ã›ã„ãŸã ã„ãŸçš†ã•ã¾ã®ã”支æ´ãŒã‚ã£ãŸã‹ã‚‰ã“ãã¨è€ƒãˆã¦ãŠã‚Šã¾ã™ã€‚é‡ãã¦å¾¡ç¤¼ç”³ã—上ã’ã¾ã™ã€‚ ã—ã‹ã—ãªãŒã‚‰ã€ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®æƒ…å ±å…¥æ‰‹æ–¹æ³•ã®å¤šæ§˜åŒ–ã‚„QAã‚µãƒ¼ãƒ“ã‚¹å¸‚å ´ã®çŠ¶æ³ã€ï¼ ITã®ä»Šå¾Œã®ãƒ¡ãƒ‡ã‚£ã‚¢é‹å–¶æ–¹é‡ãªã©ã‚’検討ã—ãŸçµæžœã€2020å¹´2月28日（金）15:00ã‚’ã‚‚ã¡ã¾ã—ã¦QAï¼ ITã®ã‚µãƒ¼ãƒ“スを終了ã™ã‚‹ã“ã¨ã«ã—ã¾ã—ãŸã€‚ ã“ã‚Œã¾ã§ã”利用をã„ãŸã ãã¾ã—ãŸçš†ã•ã¾ã«ã¯æ®‹å¿µãªãŠçŸ¥ã‚‰ã›ã¨ãªã‚Šã€èª ã«å¿ƒè‹¦ã—ãæ€ã£ã¦ãŠã‚Šã¾ã™ã€‚何ã¨ãžã€ã”ç†è§£ã‚’ã„ãŸã ã‘ã¾ã™ã¨å¹¸ã„ã§ã™ã€‚ QAï¼ ITã®7å¹´é–“ã§çš†ã•ã¾ã®çŸ¥è˜
memcachedプãƒãƒˆã‚³ãƒ«ã«ã¤ã„ã¦
※ memcachedプãƒãƒˆã‚³ãƒ«ã®ä»•æ§˜æ›¸ã¯ä»¥ä¸‹ã«ã‚ã‚Šã¾ã™ã€‚ http://code.sixapart.com/svn/memcached/trunk/server/doc/protocol.txt データã®ä¿å˜ã‚’è¡Œã†ã‚³ãƒžãƒ³ãƒ‰(set,add,replace,append,prepend)ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãªæ–‡æ³•ã¨ãªã‚Šã¾ã™ã€‚ <コマンド> <key> <flags> <exptime> <bytes> <data> <key>ã¯ä¿å˜ã™ã‚‹ãŸã‚ã®ã‚ーåを指定ã—ã¾ã™ã€‚実装ã«ã‚ˆã£ã¦ã‚‚ç•°ãªã‚Šã¾ã™ãŒã€æœ€å¤§é•·ã¯250byteã§ã™ã€‚ <flags>ã¯ã‚¢ãƒ—リケーション特有ã®32bitã®å€¤(0〜4294967295)を指定ã™ã‚‹ã“ã¨ãŒã§ãã€ãƒ‡ãƒ¼ã‚¿ã®å–得時ã«æ ¼ç´ã—ãŸæ™‚ã®å€¤ãŒè¿”ã•ã‚Œã¾ã™ã€‚ <exptime>ã¯ãƒ‡ãƒ¼ã‚¿ã®æœ‰åŠ¹æœŸé–“を秒数ã§æŒ‡å®šã—ã¾ã™ã€‚指定ã—ãŸæ™‚間経éŽã™ã‚‹ã¨ã€è‡ªå‹•çš„ã«ã‚ーãŒå‰Šé™¤ã•ã‚Œã¾ã™ã€‚0を指定ã™ã‚‹ã¨è‡ªå‹•å‰Šé™¤ã•ã‚Œ
GitHub - 3rd-Eden/memcached: A fully featured Memcached client build on top of Node.js. Build with scaling in mind so it will support Memcached clusters and consistent hashing.
memcached is a fully featured Memcached client for Node.js. memcached is built with scaling, high availability and exceptional performance in mind. We use consistent hashing to store the data across different nodes. Consistent hashing is a scheme that provides a hash table functionality in a way that adding or removing a server node does not significantly change the mapping of the keys to server n
Webアプリã«ãŠã‘ã‚‹ã‚ャッシュ。オレオレ事例 - ゆーã™ã‘ã¹ãƒ¼æ—¥è¨˜
Webアプリã«ãŠã„ã¦ã€ã‚¢ã‚¯ã‚»ã‚¹ã‚„データé‡ãŒå¤šã/大ãããªã£ã¦ãã‚‹ã¨ã€ ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã®ãƒ‘フォーマンスãŒä½Žä¸‹ã—ãŒã¡ã§ã™ã€‚ MySQLãªã©ã®RDBMSã«ãƒ‡ãƒ¼ã‚¿ã‚’ç½®ã„ã¦ã„ã‚‹å ´åˆã¯é©åˆ‡ã« クエリーを改善ã™ã‚‹ã€ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã‚’張るã€ã¨ã„ã£ãŸç–ã§è§£æ±ºã™ã‚‹å ´åˆã‚‚ã‚ã‚Šã¾ã™ãŒã€ ã‚ャッシュを効果的ã«åˆ©ç”¨ã™ã‚‹ã“ã¨ã§ã‚ˆã‚Šé«˜è² è·ã«å¯¾å¿œã§ãã‚‹å¯èƒ½æ€§ãŒã‚ã‚Šã¾ã™ã€‚ ã¾ãŸã€å¤–部APIã¸ã®å•ã„åˆã‚ã›ãªã©ã€ã©ã†ã—ã¦ã‚‚ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚„ä»–ã®ãƒªã‚½ãƒ¼ã‚¹ã®ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ 㫠引ããšã‚‰ã‚Œã‚‹éƒ¨åˆ†ã«é–¢ã—ã¦ã¯æƒ…å ±ã‚’æ‰‹å…ƒã«ã‚ャッシュã—ã¦ãŠãã¨ä½•ã‹ã¨ã‚ˆã„ã§ã—ょã†ã€‚ 今回ã¯Webアプリケーションã®ãƒ¬ã‚¤ãƒ¤ãƒ¼ã§æœ€è¿‘僕ãŒã©ã®ã‚ˆã†ã«ã‚ャッシュを使ã£ã¦ã„ã‚‹ã®ã‹ï¼Ÿ ã®äº‹ä¾‹ã‚’紹介ã—ã¤ã¤ã¾ã¨ã‚ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ã‚ャッシュã«ã¤ã„ã¦ã¨ãã®åŸºæœ¬ ãã‚‚ãã‚‚ã‚ャッシュã¨ã¯ã€ç°¡å˜ã«ãµã‚ã£ã¨è¡¨ç¾ã™ã‚‹ãªã‚‰ã°ã€ 「一時的ã«æƒ…å ±ã‚’æ‰‹å…ƒã®è¿‘ã„å ´æ‰€ã«ç½®ã„ã¦ãŠã„ã¦åˆ©ç”¨ã™ã‚‹æ‰‹æ³•ã€ã‚‚ã—ãã¯ãã®ä¸€
Etsy Engineering | mctop - a tool for analyzing memcache get traffic
Here at Etsy we (ab)use our memcache infrastructure pretty heavily as a caching layer between our applications and our database tiers. We functionally partition our memcache 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
第4回　memcachedã®CASã¨mixiã§ã®é‹ç”¨å‹•å‘ | gihyo.jp
今ã¾ã§ç°¡å˜ã«è§¦ã‚Œã¦ããŸmemcachedã®CAS（Compare and Swap）機能ã§ã™ãŒã€ä»Šå›žã¯ãã®å…·ä½“çš„ãªä½¿ç”¨ä¾‹ã‚„ã€ãƒ—ãƒãƒˆã‚³ãƒ«ã®é•ã„ã«ã‚ˆã‚‹ç‰¹å¾´ã‚’紹介ã—ã¾ã™ã€‚ã¾ãŸã€mixiã§ã®ä»Šå¾Œã®memcachedé‹ç”¨å‹•å‘を紹介ã—ã¾ã™ã€‚ CASã®æ¦‚è¦ memcachedã«ã¯ç‰¹å®šã®ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã—ã¦ã‚¢ãƒˆãƒŸãƒƒã‚¯ãªæ›´æ–°ã‚’試ã¿ã‚‹æ©Ÿèƒ½ãŒå˜åœ¨ã—ã¾ã™ã€‚ã“ã®æ©Ÿèƒ½ã®ä»•çµ„ã¿ã¯å˜ç´”ã§ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¯ç‰¹å®šã®ã‚³ãƒžãƒ³ãƒ‰ï¼ˆãƒ†ã‚ストプãƒãƒˆã‚³ãƒ«ã®å ´åˆã¯â€œâ getsâ â€â ）を実行ã™ã‚‹ã“ã¨ã«ã‚ˆã‚Šã€ã‚µãƒ¼ãƒã‹ã‚‰ç‰¹å®šã®ãƒ¬ã‚³ãƒ¼ãƒ‰ã¨ãã®çŠ¶æ…‹ã‚’表ã™ãƒ¦ãƒ‹ãƒ¼ã‚¯ãªè˜åˆ¥åを与ãˆã‚‰ã‚Œã¾ã™ã€‚ ã“ã®è˜åˆ¥åã¯ãƒ¬ã‚³ãƒ¼ãƒ‰ãŒä½•ã‚‰ã‹ã®æ‰‹æ®µã«ã‚ˆã£ã¦æ›´æ–°ã•ã‚Œã‚‹ã¨å¤‰æ›´ã•ã‚Œã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆãŒä¿æŒã—ã¦ã„ã‚‹è˜åˆ¥åã¨ã¯åˆ¥ã®å€¤ã«ãªã‚Šã¾ã™ã€‚ã—ãŸãŒã£ã¦ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¯ä¸Žãˆã‚‰ã‚ŒãŸè˜åˆ¥åを更新命令ã¨ä¸€ç·’ã«é€ä¿¡ã™ã‚‹ã“ã¨ã§ã€ã‚µãƒ¼ãƒã¯ãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’アトミックã«æ›´æ–°ã§ãã‚‹ã‹ã‚’確èªã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã‚‚ã—è˜åˆ¥åãŒ
memcachedプãƒãƒˆã‚³ãƒ«CASæ“作ã«ã¤ã„ã¦
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memcachedを使ã£ãŸé–‹ç™ºã®ãŠä¾›ã«ã€‚ã‚ー一覧å–得ツール·memcached-keys MOONGIFT
memcached-keysã¯memcachedã®ã‚ーã€ãƒ‡ãƒ¼ã‚¿ã‚µã‚¤ã‚ºã€æœ‰åŠ¹æœŸé™ã‚’一覧表示ã™ã‚‹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã€‚ memcached-keysã¯Perl製ã®ã‚ªãƒ¼ãƒ—ンソース・ソフトウェア。Webサービスを高速化ã™ã‚‹ä¸Šã§æ¬ ã‹ã›ãªã„ã®ãŒã‚ャッシュã ã‚ã†ã€‚ãã®ã‚ャッシュシステムã¨ã—ã¦æœ‰åãªã®ãŒmemcachedã 。オンメモリã«ä¿å˜ã™ã‚‹ã®ã§é«˜é€Ÿã€KVSãªã®ã§ã‚·ãƒ³ãƒ—ルã«åˆ©ç”¨ã§ãã‚‹ã®ãŒåˆ©ç‚¹ã 。 実行çµæžœ memcachedを使ã£ã¦ã„ã¦æ°—ã«ãªã‚‹ã®ãŒã€ã¡ã‚ƒã‚“ã¨ã‚ャッシュã§æ¥ã¦ã„ã‚‹ã®ã‹å¦ã‹ã€ã‚ャッシュãŒã©ã‚Œãらã„ã‚ã‚‹ã®ã‹ã¨ã„ã£ãŸæƒ…å ±ã§ã¯ãªã„ã ã‚ã†ã‹ã€‚ãã®å•é¡Œã‚’解決ã—ã¦ãれるソフトウェアãŒmemcached-keysã 。 memcached-keysã¯Perl製ã®ã‚·ãƒ³ãƒ—ルãªã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã€ãã®ã¾ã¾å®Ÿè¡Œã™ã‚‹ã ã‘ã§ãƒãƒ¼ã‚«ãƒ«ï¼ˆãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã€‚変更å¯èƒ½ï¼‰ã®memcachedã«ã‚ã‚‹ã‚ャッシュを一覧表示ã—ã¦ãれる。ã‚ャッシュåã€æœ‰åŠ¹
Munin Exchange | Memcached MultiGraph plugin
Information: Category: Services Platform(s): platform independent Tags: multigraph, memcached Language: Perl Author: Matt West Uploaded by: mhwest Date uploaded: 31.05.2010 Downloads: 300 Rating: 5.0 (1 votes total) Memcached Multigraph Plugin This plugin does require munin v1.4.x for multigraph support, and was tested against memcached v1.4.5, and requires at least v1.4.2. Normal Graphs Th
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jmemcache-daemon - Project Hosting on Google Code
GitHub - dustin/java-memcached-client: A simple, asynchronous, single-threaded memcached client written in java.
bottle-memcache
Client Challenge
xmemcached - Project Hosting on Google Code
NullPointerException of memcached-client2.5.1 in Jmeter testing · Issue #12 · gwhalin/Memcached-Java-Client
https://pypi.org/project/python-memcached/
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