{"id":50204,"date":"2023-12-31T11:06:49","date_gmt":"2023-05-01T13:15:35","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e6%98%af%e9%94%ae%e5%80%bc%e5%ad%98%e5%82%a8%ef%bc%88kvs%ef%bc%89%e5%90%97%ef%bc%9f%ef%bc%88%e4%bb%8ehbase-vs-cassandra%e5%8f%af%e4%bb%a5%e4%ba%86%e8%a7%a3\/"},"modified":"2024-05-04T16:07:25","modified_gmt":"2024-05-04T08:07:25","slug":"%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e6%98%af%e9%94%ae%e5%80%bc%e5%ad%98%e5%82%a8%ef%bc%88kvs%ef%bc%89%e5%90%97%ef%bc%9f%ef%bc%88%e4%bb%8ehbase-vs-cassandra%e5%8f%af%e4%bb%a5%e4%ba%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e6%98%af%e9%94%ae%e5%80%bc%e5%ad%98%e5%82%a8%ef%bc%88kvs%ef%bc%89%e5%90%97%ef%bc%9f%ef%bc%88%e4%bb%8ehbase-vs-cassandra%e5%8f%af%e4%bb%a5%e4%ba%86%e8%a7%a3\/","title":{"rendered":"\u6587\u4ef6\u7cfb\u7edf\u662f\u952e\u503c\u5b58\u50a8\uff08KVS\uff09\u5417\uff1f\uff08\u4eceHBase VS Cassandra\u53ef\u4ee5\u4e86\u89e3\u5230KVS\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff09"},"content":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662fRecruit Lifestyle 2016\u5e74\u5723\u8bde\u6d3b\u52a8\u4e2d\u7684\u7b2c25\u5929\u7684\u65e5\u8bb0\u3002<\/p>\n<p>\u6211\u662f\u6570\u636e\u5de5\u7a0b\u5e08\u96c6\u56e2\u548c\u677e\u8f6f\u5389\u5bb3\u7684\u673a\u5668\u5b66\u4e60\u5de5\u7a0b\u5e08tomomoto\u3002\u6211\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5206\u6790\u548c\u673a\u5668\u5b66\u4e60\uff0c\u63a8\u52a8\u6570\u636e\u7684\u5229\u7528\uff0c\u8fdb\u884c\u7cfb\u7edf\u5f00\u53d1\uff0c\u5e76\u63d0\u4f9b\u514d\u8d39\u7d20\u6750\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u60f3\u7a0d\u7a0d\u4ecb\u7ecd\u4e00\u4e0bKVS\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u4ee5HBase\u548cCassandra\u4e3a\u4f8b\u3002\uff08\u4e0e\u5de5\u4f5c\u3001\u5723\u8bde\u8282\u548c\u7ed3\u5a5a\u7eaa\u5ff5\u65e5\u65e0\u5173\uff01\uff09<\/p>\n<h1>KVS\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h1>\n<p>\u6700\u521d\u554fKVS(\u9375\u503c\u5b58\u5132)\u662f\u4ec0\u9ebc\uff1f\u5982\u679c\u6309\u7167\u540d\u5b57\u7684\u610f\u601d\uff0c\u5b83\u5fc5\u9808\u662f\u4e00\u500bKeyValueStore\uff0c\u90a3\u9ebc\u5b83\u5c31\u662f\u4e00\u500b\u5f9e\u9375\u53d6\u503c\u7684\u6578\u64da\u5eab\u3002\u4f46\u9019\u6a23\u5c31\u8db3\u5920\u4e86\u55ce\uff1f\u90a3\u9ebc\u5f9e\u6587\u4ef6\u540d(\u9375)\u4e2d\u7372\u53d6\u6587\u4ef6\u4fe1\u606f(\u503c)\u7684\u6587\u4ef6\u7cfb\u7d71\u4e5f\u53ef\u4ee5\u88ab\u8a8d\u70ba\u662fKVS\uff0c\u4f46\u9019\u4e26\u4e0d\u5408\u9069\u3002<\/p>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cRDB\u5728CAP\u5b9a\u7406\u4e2d\u6307\u7684\u662f\u975eCA\u7c7b\u578b\u7684\u6570\u636e\u5e93\uff0c\u4e5f\u5c31\u662fAP\/CP\u7c7b\u578b\u7684\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\u3002CAP\u5b9a\u7406\u7b80\u5355\u6765\u8bf4\uff0c\u6307\u7684\u662f\u5f88\u96be\u540c\u65f6\u6ee1\u8db3CAP\u5b9a\u7406\u7684\u4e09\u4e2a\u8981\u7d20\uff0c\u5fc5\u987b\u8981\u727a\u7272\u5176\u4e2d\u4e00\u4e2a\u8981\u7d20\u3002\u51c6\u786e\u6765\u8bf4\uff0c\u5b83\u8868\u8fbe\u4e86\u8fd9\u4e09\u4e2a\u8981\u7d20\u4e4b\u95f4\u7684\u6743\u8861\u5173\u7cfb\uff0c\u5e76\u4e0d\u4e00\u5b9a\u8981\u9009\u62e9\u4e24\u4e2a\u8981\u7d20\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">CAP\u5b9a\u7406\u306e\uff13\u8981\u7d20<\/ul>\n<\/li>\n<\/ul>\n<p>Consistency(\u4e00\u8cab\u6027)<br \/>\nAvailability(\u53ef\u7528\u6027)<br \/>\nPartition Tolerance(\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u65ad\u8010\u6027)<\/p>\n<p>KVS\u53d7\u5230\u91cd\u89c6\u7684\u5f00\u59cb\u53ef\u4ee5\u8ffd\u6eaf\u52302006\u5e74Google BigTable\u7684\u8bba\u6587\u548c2007\u5e74Amazon DynamoDB\u7684\u8bba\u6587\u516c\u5f00\u3002Google BigTable\u5728\u727a\u7272\u53ef\u7528\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u63d0\u4f9b\u4e86\u5f3a\u4e00\u81f4\u6027\u548c\u9ad8\u8d1f\u8f7d\u5206\u6563\u6027\u80fd\uff0c\u800cAmazon DynamoDB\u5219\u5728\u727a\u7272\u4e00\u81f4\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u5b9e\u73b0\u4e86\u53ef\u6269\u5c55\u6027\u548c\u9ad8\u53ef\u7528\u6027\u3002\u8fd9\u4e9b\u8bba\u6587\u4e3a\u540e\u6765\u5f00\u53d1\u4e86\u4e00\u7cfb\u5217\u7684\u5f00\u6e90\u8f6f\u4ef6\u5982HBase\uff08\u6e90\u4e8eBigTable\uff09\u548cCassandra\uff08\u4e5f\u6709\u4e00\u4e9bBigTable\u7684\u5f71\u54cd\uff09\uff0c\u63d0\u4f9b\u4e86\u5951\u673a\u3002<\/p>\n<p>\u5c3d\u7ba1KVS\u5b58\u5728\u8bb8\u591a\u4e0d\u540c\u7684\u6765\u6e90\u548c\u5b9a\u4e49\uff0c\u4f46\u6211\u8ba4\u4e3a\u53ea\u6709\u5177\u5907\u4e0b\u5217\u95ee\u9898\u7684KVS\u624d\u662f\u53ef\u63a5\u53d7\u7684\u3002<\/p>\n<p>CP\u578b\u306eKVS:HBase<\/p>\n<p>\u4e00\u6642\u7684\u306a\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3092\u8a31\u5bb9\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u5f37\u3044\u4e00\u8cab\u6027\u3068\u9ad8\u3044\u8ca0\u8377\u5206\u6563\u6027\u80fd\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308bDataBase<\/p>\n<p>AP\u578b\u306eKVS:Cassandra<\/p>\n<p>\u5f37\u3044\u4e00\u8cab\u6027\u3092\u4fdd\u3066\u306a\u3044\u3053\u3068\u3092\u8a31\u5bb9\u3059\u308b\u304c\u3001EventualConsistency\u306b\u3088\u3063\u3066\u3042\u308b\u7a0b\u5ea6\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u3001\u9ad8\u3044\u53ef\u7528\u6027\u3068\u9ad8\u3044\u8ca0\u8377\u5206\u6563\u6027\u80fd\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308bDataBase<\/p>\n<h1>KVS\u7684\u673a\u5236<\/h1>\n<p>\u65e0\u8bba\u662fAP\u578b\u8fd8\u662fCP\u578b\uff0cKVS\u90fd\u9700\u8981\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u8fdb\u884c\u6570\u636e\u7ba1\u7406\u4ee5\u5b9e\u73b0\u9ad8\u8d1f\u8f7d\u5206\u6563\u6027\u80fd\u3002\u7136\u800c\uff0c\u968f\u7740\u8282\u70b9\u6570\u91cf\u7684\u589e\u52a0\uff0c\u67d0\u4e2a\u8282\u70b9\u53d1\u751f\u6545\u969c\u7684\u6982\u7387\u4e5f\u4f1a\u589e\u52a0\uff0c\u4ece\u800c\u5bb9\u6613\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u548c\u53ef\u7528\u6027\u964d\u4f4e\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u8fdb\u884c\u590d\u5236\uff08\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u7ba1\u7406\u76f8\u540c\u7684\u6570\u636e\uff09\u3002\u7136\u800c\uff0c\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u5904\u7406\u76f8\u540c\u6570\u636e\u65f6\u4fdd\u6301\u4e00\u81f4\u6027\u53d8\u5f97\u66f4\u52a0\u56f0\u96be\u3002\u4ee5\u4e0b\u5c06\u4ee5HBase\u4f5c\u4e3aCP\u578b\u4ee3\u8868\u548cCassandra\u4f5c\u4e3aAP\u578b\u4ee3\u8868\u6765\u89e3\u91caCP\/AP\u578b\u7684KVS\u5728\u5982\u4f55\u5e73\u8861\u8fd9\u79cd\u6743\u8861\u5173\u7cfb\u7684\u4f8b\u5b50\u3002<\/p>\n<h2>HBase\u7684\u673a\u5236\u662f\u4ec0\u4e48\uff1f<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8ff6913a08637a6daac0\/13-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-12-27 14.58.31.png\" \/><\/div>\n<p>\u5728HBase\u4e2d\uff0c\u6570\u636e\u4ee5\u79f0\u4e3aRegion\u7684\u5757\u6765\u5904\u7406\uff0c\u5176\u4e2d\u6bcf\u4e2aRegion\u662f\u901a\u8fc7\u5c06\u6570\u636e\u7684Key\u5206\u5272\u6210\u8303\u56f4\u6765\u5b9a\u4e49\u7684\u5355\u4f4d\u3002\u5047\u8bbeKey\u7684\u503c\u4e3a1-5000\uff0c\u5e76\u5c06\u6570\u636e\u5206\u5272\u62101000\u7684\u533a\u95f4\uff0c\u90a3\u4e48Key\u503c\u57281001-2000\u8303\u56f4\u5185\u7684\u6570\u636e\u5c06\u6210\u4e3a\u4e00\u4e2aRegion\u3002\u8fd9\u79cd\u5206\u5272\u79f0\u4e3aSharding\uff08\u5206\u7247\uff09\uff0c\u5728HBase\u4e2d\u5b9e\u73b0\u4e86\u81ea\u52a8Sharding\u3002<\/p>\n<p>RegionServer \u7ba1\u7406\u4e00\u4e2a\u6216\u591a\u4e2a Region\u3002\u6bcf\u4e2a RegionServer\u7ba1\u7406\u7684 Region \u4fe1\u606f\u7531 Zookeeper \u8fdb\u884c\u7ba1\u7406\uff0cZookeeper \u8d1f\u8d23\u6839\u636e Region \u7684\u91cd\u65b0\u5206\u914d\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u7b49\u64cd\u4f5c\u3002\u56e0\u6b64\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5411 Zookeeper \u83b7\u53d6 RegionServer \u7684\u4f4d\u7f6e\u4fe1\u606f\uff0c\u5e76\u76f4\u63a5\u4e0e RegionServer \u8fdb\u884c\u6570\u636e\u4ea4\u4e92\u3002\u53e6\u5916\uff0c\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u7684\u884c\u7ea7\u4e00\u81f4\u6027\uff0cHBase \u8981\u6c42\u6bcf\u4e2a Region \u5fc5\u987b\u7531\u4e00\u4e2a RegionServer \u8fdb\u884c\u7ba1\u7406\u3002\u7136\u800c\uff0c\u8fd9\u540c\u65f6\u589e\u52a0\u4e86\u6570\u636e\u4e22\u5931\u7684\u98ce\u9669\uff0c\u5e76\u4e14\u8fdb\u4e00\u6b65\u964d\u4f4e\u4e86\u53ef\u7528\u6027\u3002<\/p>\n<p>\u5728RegionServer\u4e2d\uff0cRegion\u4f1a\u4f5c\u4e3aMemostore\u88ab\u5c55\u5f00\u5728\u5185\u5b58\u4e2d\u3002\u7136\u800c\uff0c\u5728Memostore\u9636\u6bb5\uff0cRegion\u5c1a\u672a\u88ab\u590d\u5236\uff0c\u5728\u4ec5\u5b58\u5728\u5185\u5b58\u4e2d\u65f6\uff0c\u5982\u679c\u670d\u52a1\u5668\u5b95\u673a\uff0c\u6570\u636e\u5c06\u4f1a\u4e22\u5931\u3002\u4e3a\u6b64\uff0cHBase\u5c06\u66f4\u6539\u5185\u5bb9\u5199\u5165\u78c1\u76d8\u4f5c\u4e3aHLog\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u8fd9\u79cd\u673a\u5236\u88ab\u79f0\u4e3aWAL\uff08WriteAheadLog\uff0c\u5148\u5199\u65e5\u5fd7\uff09\u3002<\/p>\n<p>Memostore\/HFile \u662f\u4e00\u79cd\u7c7b\u4f3c\u4e8e\u65e5\u5fd7\u7684\u6570\u636e\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u64cd\u4f5c\u5185\u5bb9\u548c\u76ee\u6807\u8bb0\u5f55\u7b49\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u5728\u5199\u5165\u6216\u66f4\u65b0\u65f6\uff0c\u90fd\u4f1a\u5c06\u4fe1\u606f\u8ffd\u52a0\u5230 Memstore \u4e2d\u3002\u800c\u5728\u8bfb\u53d6\u65f6\uff0c\u4f1a\u4ece Memstore \u4e2d\u786e\u8ba4\u76ee\u6807\u8bb0\u5f55\u7684\u6700\u65b0\u4fe1\u606f\uff0c\u5e76\u52a0\u8f7d\u6570\u636e\u3002\u5982\u679c Memstore \u4e2d\u4fe1\u606f\u4e0d\u8db3\uff0c\u8fd8\u4f1a\u53c2\u8003 HFile \u6765\u83b7\u53d6\u6570\u636e\u3002<\/p>\n<p>\u5f53Memostore\u7684\u5927\u5c0f\u589e\u52a0\u65f6\uff0c\u5c06Memostore\u7684\u6570\u636e\u4f5c\u4e3aHFile\u5199\u5165HDFS\u4e2d\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5728HDFS\u4e2d\u8fdb\u884c\u590d\u5236\uff0c\u56e0\u6b64\u5728\u5199\u5165HFile\u65f6\u6570\u636e\u4e22\u5931\u7684\u53ef\u80fd\u6027\u975e\u5e38\u4f4e\u3002\u5f53HFile\u7684\u6570\u91cf\u589e\u591a\u65f6\uff0c\u5c06\u8fdb\u884c\u5408\u5e76\u5904\u7406\uff0c\u5373Compaction\uff08\u538b\u7f29\uff09\u64cd\u4f5c\u3002\u5408\u5e76\u5904\u7406\u7684\u5185\u5bb9\u901a\u5e38\u5305\u62ec\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u65e5\u5fd7\uff0c\u4ee5\u6ee1\u8db3\u540e\u7eed\u5904\u7406\u7684\u9700\u6c42\u3002<\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u7684\u673a\u5236\uff0c\u4e00\u4e9b\u6570\u636e\u53ef\u80fd\u4f1a\u9762\u4e34\u8f83\u9ad8\u7684\u4e22\u5931\u98ce\u9669\uff0c\u540c\u65f6\uff0c\u4e3a\u4e86\u6062\u590dMaster\u548cRegionServer\uff0c\u53ef\u7528\u6027\u53ef\u80fd\u4f1a\u4e0b\u964d\u3002\u7136\u800c\uff0c\u901a\u8fc7\u589e\u52a0RegionServer\u7684\u6570\u91cf\uff0c\u7cfb\u7edf\u53ef\u4ee5\u5728\u5b9e\u73b0\u6269\u5c55\u6027\u7684\u540c\u65f6\uff0c\u4fdd\u6301\u884c\u7ea7\u4e00\u81f4\u6027\u3002<\/p>\n<h2>\u5361\u6851\u5fb7\u62c9\u7684\u673a\u5236<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d8ff6913a08637a6daac0\/21-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-11-26 11.46.56.png\" \/><\/div>\n<p>\u5728Cassandra\u4e2d\uff0c\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\uff08Consistent Hashing\uff09\u6765\u786e\u5b9a\u6bcf\u4e2a\u6570\u636e\u5e94\u8be5\u653e\u7f6e\u5728\u54ea\u4e2a\u8282\u70b9\u4e0a\u3002\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u662f\u5c06\u300c\u6570\u636e\u952e\u7684\u54c8\u5e0c\u503c\u300d\u4e0e\u300c\u7ba1\u7406\u6570\u636e\u7684\u8282\u70b9\u300d\u8fdb\u884c\u6620\u5c04\uff0c\u5c06\u54c8\u5e0c\u503c\u8f6c\u5316\u4e3a\u6570\u5b57\u5e76\u5bf9\u4e00\u4e2a\u8db3\u591f\u5927\u7684\u6570\u5b57\u53d6\u4f59\u6570\uff0c\u7136\u540e\u5728\u4e00\u4e2a\u5706\u73af\u4e0a\u8fdb\u884c\u6392\u5217\uff0c\u6839\u636e\u4f4d\u7f6e\u786e\u5b9a\u8d1f\u8d23\u7684\u8282\u70b9\u3002\u4f8b\u5982\uff0c\u56fe\u4e2d\u7684DataA\u5bf9\u5e94\u7684\u54c8\u5e0c\u503c\u4e3a\u661f\u53f7\u4f4d\u7f6e\uff0c\u67093\u4e2a\u590d\u5236\uff0c\u6240\u4ee5\u8d1f\u8d23\u7684\u8282\u70b9\u662f5\u30016\u30017\u3002\u901a\u8fc7\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\uff0c\u53ef\u4ee5\u51cf\u5c11\u8282\u70b9\u6dfb\u52a0\u6216\u5220\u9664\u65f6\u7684\u6570\u636e\u91cd\u65b0\u5206\u914d\u6210\u672c\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u6ca1\u6709\u4e3b\u8282\u70b9\u7684\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u8282\u70b9\u81ea\u4e3b\u7ba1\u7406\u5176\u8d1f\u8d23\u8303\u56f4\u5185\u7684\u6570\u636e\uff0c\u5e76\u5b9e\u73b0\u53ef\u7528\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n<p>\u4e3a\u4e86\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\uff0c\u6bcf\u4e2a\u8282\u70b9\u9700\u8981\u77e5\u9053\u81ea\u5df1\u4ee5\u53ca\u5176\u4ed6\u8282\u70b9\u7684\u8d1f\u8d23\u8303\u56f4\uff0c\u4ee5\u4fbf\u5728\u5ba2\u6237\u7aef\u67e5\u8be2\u65f6\u8fdb\u884c\u56de\u7b54\u3002\u4e3a\u4e86\u5bbd\u677e\u5171\u4eab\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5f15\u5165\u4e86\u4e00\u79cd\u79f0\u4e3aGossip Protocol\uff08\u516b\u5366\u534f\u8bae\uff09\u7684\u673a\u5236\u3002Gossip Protocol\u662f\u6307\u6bcf\u4e2a\u8282\u70b9\u4e0e\u5176\u4ed6\u8282\u70b9\u968f\u673a\u5171\u4eab\u4fe1\u606f\uff0c\u7ecf\u8fc7\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u6240\u6709\u8282\u70b9\u90fd\u80fd\u4fdd\u6301\u6700\u65b0\u4fe1\u606f\u7684\u673a\u5236\u3002<\/p>\n<p>Cassandra\u7684\u4e00\u5b9a\u7a0b\u5ea6\u7684\u4e00\u81f4\u6027\u4e3b\u8981\u662f\u7531&#8221;Quorum Protocol&#8221;\uff08\u4ef2\u88c1\u5354\u5b9a\uff09\u652f\u6301\u3002Quorum Protocol\u662f\u6307\u8981\u6c42\u7684\u3010\u8907\u88fd\u6578\u91cf\u3011\u5fc5\u9808\u5927\u65bc\u3010\u8b80\u53d6\u6210\u529f\u7bc0\u9ede\u6578\u91cf\u3011\u548c\u3010\u5beb\u5165\u6210\u529f\u7bc0\u9ede\u6578\u91cf\u3011\u4e4b\u548c\uff0c\u4ee5\u78ba\u4fdd\u5728\u6578\u64da\u8b80\u53d6\u6210\u529f\u6642\uff0c\u7e3d\u80fd\u5305\u542b\u6700\u65b0\u7248\u672c\u7684\u6578\u64da\u3002\u6b64\u5916\uff0c\u901a\u904e\u3010\u8b80\u53d6\u6210\u529f\u7bc0\u9ede\u6578\u91cf\u3011\u548c\u3010\u5beb\u5165\u6210\u529f\u7bc0\u9ede\u6578\u91cf\u3011\uff0c\u9084\u53ef\u4ee5\u512a\u5316\u8b80\u53d6\u6027\u80fd\u6216\u8b8a\u66f4\u70ba\u5beb\u5165\u6027\u80fd\u70ba\u91cd\u3002<\/p>\n<p>\u52a0\u4e0a&#8221;Quorum Protocol&#8221; \uff0c\u53ea\u8981\u80fd\u5224\u65ad\u5df2\u8bfb\u53d6\u6570\u636e\u7248\u672c\u7684\u524d\u540e\u5173\u7cfb\uff0c\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u4e00\u5b9a\u7684\u4e00\u81f4\u6027\u3002\u5224\u65ad\u524d\u540e\u5173\u7cfb\u6240\u4f7f\u7528\u7684\u662f&#8221;Vector Clock&#8221;\uff08\u5411\u91cf\u65f6\u949f\uff09\u3002&#8221;Vector Clock&#8221; \u662f\u903b\u8f91\u65f6\u949f\u7684\u4e00\u79cd\uff0c\u662f\u8282\u70b9\u548c\u8ba1\u6570\u5668\u7684\u96c6\u5408\u4f53\u3002\u4e3a\u4e86\u4f7f\u7528\u5e38\u89c4\u65f6\u949f\uff0c\u9700\u8981\u59cb\u7ec8\u4fdd\u6301\u6240\u6709\u8282\u70b9\u65f6\u949f\u7684\u540c\u6b65\u3002\u4f46\u662f\uff0c\u5f53\u8282\u70b9\u6570\u91cf\u589e\u591a\u65f6\uff0c\u8fd9\u53d8\u5f97\u56f0\u96be\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528&#8221;Vector Clock&#8221;\u3002\u7136\u800c\uff0c\u5728Cassandra\u4e2d\uff0c\u653e\u5f03\u4e86\u4e25\u683c\u5904\u7406\u5df2\u8bfb\u53d6\u6570\u636e\u7248\u672c\u524d\u540e\u5173\u7cfb\uff0c\u4e0d\u4f7f\u7528&#8221;Vector Clock&#8221;\uff08\u53c2\u8003\uff1ahttp:\/\/www.datastax.com\/dev\/blog\/why-cassandra-doesnt-need-vector-clocks\uff09\u3002<\/p>\n<p>\u5728\u6b64\uff0c\u4e00\u5b9a\u7a0b\u5ea6\u7684\u4e00\u81f4\u6027\u88ab\u63d0\u53ca\u7684\u539f\u56e0\u662f\uff0c\u5982\u679c\u5199\u5165\u51e0\u4e4e\u540c\u65f6\u53d1\u751f\u5728\u4e0d\u540c\u7684\u8282\u70b9\u901a\u8fc7Vector Clock\uff0c\u4f1a\u5bfc\u81f4\u7ade\u4e89\u5e76\u4f7f\u5f97\u65e0\u6cd5\u786e\u5b9a\u6570\u636e\u7684\u524d\u540e\u5173\u7cfb\uff1b\u53e6\u5916\uff0c\u5982\u679c\u5199\u5165\u548c\u8bfb\u53d6\u51e0\u4e4e\u540c\u65f6\u901a\u8fc7\u4e0d\u540c\u7684\u8282\u70b9\u53d1\u751f\uff0c\u6839\u636e\u65f6\u673a\u4e0d\u540c\u53ef\u80fd\u4f1a\u8fd4\u56de\u4e0d\u540c\u7684\u503c\u3002<\/p>\n<p>\u6700\u540e\uff0c\u6211\u5c06\u89e3\u91ca\u5728\u590d\u5236\u6570\u4e3a3\u3001\u5199\u5165\u6210\u529f\u6240\u9700\u6570\u91cf\u4e3a2\u3001\u8bfb\u53d6\u6210\u529f\u6240\u9700\u6570\u91cf\u4e3a2\u7684\u60c5\u51b5\u4e0b\uff0c\u5199\u5165\u548c\u8bfb\u53d6\u64cd\u4f5c\u7684\u6d41\u7a0b\uff08\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u4e3a\u4e86\u89e3\u91caVectorClock\uff0c\u6211\u5c06\u8bf4\u660e\u5728Cassandra\u4e2d\u672a\u5f15\u5165VectorClock\u7684\u60c5\u51b5\u4e0b\u5982\u4f55\u4f7f\u7528\uff09\u3002<\/p>\n<p>\u5728\u8fdb\u884c\u5199\u5165\u64cd\u4f5c\u65f6\uff0c\u9996\u5148\u8fde\u63a5\u5230\u4efb\u4f55\u4e00\u4e2a\u5df2\u914d\u7f6e\u7684Cassandra\u8282\u70b9\uff0c\u5e76\u4f20\u9012\u5199\u5165\u8bf7\u6c42\u7684\u4fe1\u606f\u3002\u8fde\u63a5\u7684\u4e2d\u4ecb\u8282\u70b9\u4f1a\u9012\u589e\u5176\u6301\u6709\u7684\u5411\u91cf\u65f6\u949f(Vector Clock)\u7684\u8ba1\u6570\uff0c\u5e76\u4e3a\u6240\u6709\u8d1f\u8d23\u8be5\u6570\u636e\u7684\u8282\u70b9\u9644\u52a0\u5411\u91cf\u65f6\u949f\u7684\u4fe1\u606f\uff0c\u7136\u540e\u53d1\u9001\u5199\u5165\u8bf7\u6c42\u3002\u5982\u679c\u5199\u5165\u76ee\u6807\u8282\u70b9\u786e\u5b9a\u4f20\u9012\u7684\u5411\u91cf\u65f6\u949f\u6bd4\u5176\u6301\u6709\u7684\u6570\u636e\u5411\u91cf\u65f6\u949f\u66f4\u65b0\uff0c\u5219\u66f4\u65b0\u6570\u636e\u5e76\u5c06\u5199\u5165\u6210\u529f\u7684\u6d88\u606f\u8fd4\u56de\u7ed9\u4e2d\u4ecb\u8282\u70b9\u3002\u5982\u679c\u8d1f\u8d23\u8be5\u6570\u636e\u7684\u8282\u70b9\u65e0\u6cd5\u8fde\u63a5\uff0c\u4f8b\u5982\u5b95\u673a\u7b49\u60c5\u51b5\uff0c\u5c06\u4f1a\u5728\u5176\u4ed6\u8282\u70b9\u4e0a\u5199\u5165\u4e13\u7528\u4e8e\u5199\u5165\u6062\u590d\u64cd\u4f5c\u7684\u6570\u636e(Hint)\u3002\u8fd9\u6837\u5728\u8d1f\u8d23\u8be5\u6570\u636e\u7684\u8282\u70b9\u6062\u590d\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u63a5\u6536Hint\u6765\u91cd\u65b0\u6267\u884c\u5199\u5165\u64cd\u4f5c\u3002\u8fd9\u5c31\u662f\u6240\u8c13\u7684Hinted Hand Off(\u63d0\u9192\u5f0f\u4f20\u9012)\u673a\u5236\u3002<\/p>\n<p>\u5982\u679c\u4ee3\u7406\u8282\u70b9\u8fd4\u56de\u7684\u6210\u529f\u5199\u5165\u6570\u91cf\u8fbe\u5230\u4e86\u8bbe\u5b9a\u7684\u5199\u5165\u6210\u529f\u5fc5\u8981\u6570\u91cf\uff08Quorum Protocol\uff09\uff0c\u5219\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u5199\u5165\u6210\u529f\u3002\u53e6\u5916\uff0c\u5982\u679c\u7531\u4e8e\u8d85\u65f6\u6216\u7ade\u4e89\u5bfc\u81f4\u65e0\u6cd5\u5199\u5165\u7684\u8282\u70b9\u6570\u91cf\u8d85\u8fc7\u4e86\u5199\u5165\u6210\u529f\u5fc5\u8981\u6570\u91cf\uff0c\u5219\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u5931\u8d25\u3002<\/p>\n<p>\u5728\u6267\u884c\u8bfb\u53d6\u64cd\u4f5c\u65f6\uff0c\u6211\u4eec\u9996\u5148\u8981\u8fde\u63a5\u5230Cassandra\u96c6\u7fa4\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u8282\u70b9\uff0c\u5c06\u8bfb\u53d6\u8bf7\u6c42\u7684\u4fe1\u606f\u4f20\u9012\u7ed9\u8be5\u8282\u70b9\u3002\u8fde\u63a5\u7684\u4e2d\u95f4\u8282\u70b9\u4f1a\u5c06\u8bfb\u53d6\u8bf7\u6c42\u53d1\u9001\u7ed9\u6240\u6709\u8d1f\u8d23\u5b58\u50a8\u6570\u636e\u7684\u8282\u70b9\u3002\u88ab\u8bfb\u53d6\u7684\u8282\u70b9\u4f1a\u5c06\u5176\u6301\u6709\u7684\u6570\u636e\u548c\u5411\u91cf\u65f6\u949f\u7b49\u4fe1\u606f\u8fd4\u56de\u7ed9\u4e2d\u95f4\u8282\u70b9\u3002<\/p>\n<p>\u5982\u679c\u4ef2\u4ecb\u8282\u70b9\u56de\u5230\u8fbe\u5230\u4e86\u8bbe\u7f6e\u7684\u8bfb\u53d6\u6210\u529f\u6240\u9700\u6570\u91cf\u7684Quorum Protocol\uff0c\u5e76\u4e14\u901a\u8fc7Vector Clock\u7684\u6bd4\u8f83\u786e\u5b9a\u4e86\u6700\u65b0\u7684\u6570\u636e\uff0c\u90a3\u4e48\u5b83\u5c06\u4f5c\u4e3a\u8bfb\u53d6\u6210\u529f\u8fd4\u56de\u6700\u65b0\u7684\u6570\u636e\u3002\uff08\u540c\u65f6\uff0c\u4e5f\u4f1a\u5411\u4fdd\u6301\u65e7\u6570\u636e\u7684\u6570\u636e\u8d1f\u8d23\u8282\u70b9\u53d1\u51fa\u66f4\u65b0\u81f3\u6700\u65b0\u6570\u636e\u7684\u8bf7\u6c42\u3002\u8fd9\u88ab\u79f0\u4e3aRead Repair\uff08\u8bfb\u53d6\u4fee\u590d\uff09\u673a\u5236\u3002\uff09\u5982\u679c\u901a\u8fc7Vector 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class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Brewers CAP Theorem on distributed systems<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Bigtable: A Distributed Storage System for Structured Data<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Amazon&#8217;s Dynamo<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662fRecruit Lifestyle 2016\u5e74\u5723\u8bde\u6d3b\u52a8\u4e2d\u7684\u7b2c25\u5929\u7684\u65e5\u8bb0\u3002 \u6211\u662f\u6570\u636e\u5de5\u7a0b\u5e08\u96c6\u56e2\u548c\u677e\u8f6f [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50204","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- 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