锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#49;&#48;&#50;&#52;&#20813;&#36153;&#22312;&#32447;&#35270;&#39057;&#44;&#27431;&#32654;&#26085;&#38889;&#22312;&#32447;&#32593;&#31449;&#44;&#20122;&#27954;&#39640;&#28165;&#22269;&#20135;&#31934;&#21697;</title><link>http://www.aygfsteel.com/stevenjohn/category/54655.html</link><description>閭ｄ簺闈掓槬鐨勫瞾鏈?/description><language>zh-cn</language><lastBuildDate>Sun, 28 Dec 2014 14:54:07 GMT</lastBuildDate><pubDate>Sun, 28 Dec 2014 14:54:07 GMT</pubDate><ttl>60</ttl><item><title>CAP鍘熺悊鍜孊ASE鎬濇兂 </title><link>http://www.aygfsteel.com/stevenjohn/archive/2014/12/28/421903.html</link><dc:creator>abin</dc:creator><author>abin</author><pubDate>Sun, 28 Dec 2014 14:51:00 GMT</pubDate><guid>http://www.aygfsteel.com/stevenjohn/archive/2014/12/28/421903.html</guid><wfw:comment>http://www.aygfsteel.com/stevenjohn/comments/421903.html</wfw:comment><comments>http://www.aygfsteel.com/stevenjohn/archive/2014/12/28/421903.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/stevenjohn/comments/commentRss/421903.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/stevenjohn/services/trackbacks/421903.html</trackback:ping><description><![CDATA[<div>鍒嗗竷寮忛鍩烠AP鐞嗚錛?/div><div>Consistency(涓�鑷存�?, 鏁版嵁涓�鑷存洿鏂幫紝鎵�鏈夋暟鎹彉鍔ㄩ兘鏄悓姝ョ殑</div><div>Availability(鍙敤鎬?, 濂界殑鍝嶅簲鎬ц兘</div><div>Partition tolerance(鍒嗗尯瀹歸敊鎬? 鍙潬鎬?/div><div></div><div>瀹氱悊錛氫換浣曞垎甯冨紡緋葷粺鍙彲鍚屾椂婊¤凍浜岀偣錛屾病娉曚笁鑰呭吋欏俱�?/div><div>蹇犲憡錛氭灦鏋勫笀涓嶈灝嗙簿鍔涙氮璐瑰湪濡備綍璁捐鑳芥弧瓚充笁鑰呯殑瀹岀編鍒嗗竷寮忕郴緇燂紝鑰屾槸搴旇榪涜鍙栬垗銆?/div><div></div><div>鍏崇郴鏁版嵁搴撶殑ACID妯″瀷鎷ユ湁 楂樹竴鑷存�?+ 鍙敤鎬?寰堥毦榪涜鍒嗗尯錛?/div><div>Atomicity鍘熷瓙鎬э細(xì)涓�涓簨鍔′腑鎵�鏈夋搷浣滈兘蹇呴』鍏ㄩ儴瀹屾垚錛岃涔堝叏閮ㄤ笉瀹屾垚銆?/div><div>Consistency涓�鑷存�? 鍦ㄤ簨鍔″紑濮嬫垨緇撴潫鏃訛紝鏁版嵁搴撳簲璇ュ湪涓�鑷寸姸鎬併�?/div><div>Isolation闅旂灞? 浜嬪姟灝嗗亣瀹氬彧鏈夊畠鑷繁鍦ㄦ搷浣滄暟鎹簱錛屽郊姝や笉鐭ユ檽銆?/div><div>Durability. 涓�鏃︿簨鍔″畬鎴愶紝灝變笉鑳借繑鍥炪�?/div><div>璺ㄦ暟鎹簱浜嬪姟錛?PC (two-phase commit)錛?2PC is the anti-scalability pattern (Pat Helland) 鏄弽鍙幾緙╂ā寮忕殑錛孞avaEE涓殑JTA浜嬪姟鍙互鏀寔2PC銆傚洜涓?PC鏄弽妯″紡錛屽敖閲忎笉瑕佷嬌鐢?PC錛屼嬌鐢˙ASE鏉ュ洖閬褲�?/div><div></div><div>BASE妯″瀷鍙岮CID妯″瀷錛屽畬鍏ㄤ笉鍚孉CID妯″瀷錛岀壓鐗查珮涓�鑷存�э紝鑾峰緱鍙敤鎬ф垨鍙潬鎬э細(xì)</div><div>Basically Available鍩烘湰鍙敤銆傛敮鎸佸垎鍖哄け璐?e.g. sharding紕庣墖鍒掑垎鏁版嵁搴?</div><div>Soft state杞姸鎬?鐘舵�佸彲浠ユ湁涓�孌墊椂闂翠笉鍚屾錛屽紓姝ャ�?/div><div>Eventually consistent鏈�緇堜竴鑷達(dá)紝鏈�緇堟暟鎹槸涓�鑷寸殑灝卞彲浠ヤ簡錛岃�屼笉鏄椂鏃墮珮涓�鑷淬�?/div><div></div><div>BASE鎬濇兂鐨勪富瑕佸疄鐜版湁</div><div>1.鎸夊姛鑳藉垝鍒嗘暟鎹簱</div><div>2.sharding紕庣墖&nbsp;</div><div></div><div>BASE鎬濇兂涓昏寮鴻皟鍩烘湰鐨勫彲鐢ㄦ�э紝濡傛灉浣犻渶瑕丠igh 鍙敤鎬э紝涔熷氨鏄函綺圭殑楂樻�ц兘錛岄偅涔堝氨瑕佷互涓�鑷存�ф垨瀹歸敊鎬т負(fù)鐗虹壊錛孊ASE鎬濇兂鐨勬柟妗堝湪鎬ц兘涓婅繕鏄湁娼滃姏鍙寲鐨勩�?/div><div></div><div>鐜板湪NoSQL榪愬姩涓板瘜浜嗘嫇灞曚簡BASE鎬濇兂錛屽彲鎸夌収鍏蜂綋鎯呭喌瀹氬埗鐗瑰埆鏂規(guī)錛屾瘮濡傚拷瑙嗕竴鑷存�э紝鑾峰緱楂樺彲鐢ㄦ�х瓑絳夛紝NOSQL搴旇鏈変笅闈袱涓祦媧撅細(xì)</div><div>1. Key-Value瀛樺偍錛屽Amaze Dynamo絳夛紝鍙牴鎹瓹AP涓夊師鍒欑伒媧婚�夋嫨涓嶅悓鍊懼悜鐨勬暟鎹簱浜у搧銆?/div><div>2. 棰嗗煙妯″瀷 + 鍒嗗竷寮忕紦瀛?+ 瀛樺偍 錛圦i4j鍜孨oSQL榪愬姩錛夛紝鍙牴鎹瓹AP涓夊師鍒欑粨鍚堣嚜宸遍」鐩畾鍒剁伒媧葷殑鍒嗗竷寮忔柟妗堬紝闅懼害楂樸�?/div><div></div><div>榪欎袱鑰呭叡鍚岀偣錛氶兘鏄叧緋繪暟鎹簱SQL浠ュ鐨勫彲閫夋柟妗堬紝閫昏緫闅忕潃鏁版嵁鍒嗗竷錛屼換浣曟ā鍨嬮兘鍙互鑷繁鎸佷箙鍖栵紝灝嗘暟鎹鐞嗗拰鏁版嵁瀛樺偍鍒嗙錛屽皢璇誨拰鍐欏垎紱伙紝瀛樺偍鍙互鏄紓姝ユ垨鍚屾錛屽彇鍐充簬瀵逛竴鑷存�х殑瑕佹眰紼嬪害銆?/div><div></div><div>涓嶅悓鐐癸細(xì)NOSQL涔嬬被鐨凨ey-Value瀛樺偍浜у搧鏄拰鍏崇郴鏁版嵁搴撳ご紕板ご鐨勪駭鍝丅OX錛屽彲浠ラ�傚悎闈濲ava濡侾HP RUBY絳夐鍩燂紝鏄竴縐嶅彲浠ユ嬁鏉ュ氨鐢ㄧ殑浜у搧錛岃�岄鍩熸ā鍨?+ 鍒嗗竷寮忕紦瀛?+ 瀛樺偍鏄竴縐嶅鏉傜殑鏋舵瀯瑙ｅ喅鏂規(guī)錛屼笉鏄駭鍝侊紝浣嗚繖縐嶆柟寮忔洿鐏墊椿錛屾洿搴旇鏄灦鏋勫笀蹇呴』鎺屾彙鐨勩�?nbsp;<br /><br /><br /><br /><div>http://www.jdon.com/37625</div></div><div></div><img src ="http://www.aygfsteel.com/stevenjohn/aggbug/421903.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/stevenjohn/" target="_blank">abin</a> 2014-12-28 22:51 <a href="http://www.aygfsteel.com/stevenjohn/archive/2014/12/28/421903.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                    <footer>
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