{"id":201401,"date":"2025-05-10T10:29:35","date_gmt":"2025-05-10T02:29:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201401\/"},"modified":"2025-05-10T10:29:35","modified_gmt":"2025-05-10T02:29:35","slug":"%e5%a4%a7%e5%ae%b6%e6%89%80%e6%8e%a8%e5%b4%87%e7%9a%84redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%9c%9f%e7%9a%84%e5%b0%b1%e4%b8%87%e6%97%a0%e4%b8%80%e5%a4%b1%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201401\/","title":{"rendered":"\u5927\u5bb6\u6240\u63a8\u5d07\u7684Redis\u5206\u5e03\u5f0f\u9501\u771f\u7684\u5c31\u4e07\u65e0\u4e00\u5931\u5417\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5927\u5bb6\u6240\u63a8\u5d07\u7684Redis\u5206\u5e03\u5f0f\u9501\u771f\u7684\u5c31\u4e07\u65e0\u4e00\u5931\u5417\uff1f<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u5927\u5bb6\u6240\u63a8\u5d07\u7684Redis\u5206\u5e03\u5f0f\u9501\u771f\u7684\u5c31\u4e07\u65e0\u4e00\u5931\u5417\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n<p>&nbsp;\u5728\u5355\u5b9e\u4f8bJVM\u4e2d\uff0c\u5e38\u89c1\u7684\u5904\u7406\u5e76\u53d1\u95ee\u9898\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u6bd4\u5982synchronized\u5173\u952e\u5b57\u8fdb\u884c\u8bbf\u95ee\u63a7\u5236\u3001volatile\u5173\u952e\u5b57\u3001ReentrantLock\u7b49\u5e38\u7528\u65b9\u6cd5\u3002\u4f46\u662f\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\uff0c\u4e0a\u8ff0\u65b9\u6cd5\u5374\u4e0d\u80fd\u5728\u8de8JVM\u573a\u666f\u4e2d\u7528\u4e8e\u5904\u7406\u5e76\u53d1\u95ee\u9898\uff0c\u5f53\u4e1a\u52a1\u573a\u666f\u9700\u8981\u5bf9\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\u7684\u5e76\u53d1\u95ee\u9898\u8fdb\u884c\u5904\u7406\u65f6\uff0c\u9700\u8981\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p>\u5206\u5e03\u5f0f\u9501\uff0c\u662f\u6307\u5728\u5206\u5e03\u5f0f\u7684\u90e8\u7f72\u73af\u5883\u4e0b\uff0c\u901a\u8fc7\u9501\u673a\u5236\u6765\u8ba9\u591a\u5ba2\u6237\u7aef\u4e92\u65a5\u7684\u5bf9\u5171\u4eab\u8d44\u6e90\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n<p>\u76ee\u524d\u6bd4\u8f83\u5e38\u89c1\u7684\u5206\u5e03\u5f0f\u9501\u5b9e\u73b0\u65b9\u6848\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n<ul>\n<li>\u57fa\u4e8e\u6570\u636e\u5e93\uff0c\u5982MySQL<\/li>\n<li>\u57fa\u4e8e\u7f13\u5b58\uff0c\u5982Redis<\/li>\n<li>\u57fa\u4e8eZookeeper\u3001etcd\u7b49\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u91cc\u4ecb\u7ecd\u4e00\u4e0b\u5982\u4f55\u4f7f\u7528\u7f13\u5b58(Redis)\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n<p>\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u6700\u7b80\u5355\u7684\u65b9\u6848\u662f\u4f7f\u7528\u547d\u4ee4SETNX\u3002SETNX(SET if Not eXist)\u7684\u4f7f\u7528\u65b9\u5f0f\u4e3a\uff1aSETNX key value\uff0c\u53ea\u5728\u952ekey\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\uff0c\u5c06\u952ekey\u7684\u503c\u8bbe\u7f6e\u4e3avalue\uff0c\u82e5\u952ekey\u5b58\u5728\uff0c\u5219SETNX\u4e0d\u505a\u4efb\u4f55\u52a8\u4f5c\u3002SETNX\u5728\u8bbe\u7f6e\u6210\u529f\u65f6\u8fd4\u56de\uff0c\u8bbe\u7f6e\u5931\u8d25\u65f6\u8fd4\u56de0\u3002\u5f53\u8981\u83b7\u53d6\u9501\u65f6\uff0c\u76f4\u63a5\u4f7f\u7528SETNX\u83b7\u53d6\u9501\uff0c\u5f53\u8981\u91ca\u653e\u9501\u65f6\uff0c\u4f7f\u7528DEL\u547d\u4ee4\u5220\u9664\u6389\u5bf9\u5e94\u7684\u952ekey\u5373\u53ef\u3002<\/p>\n<p>\u4e0a\u9762\u8fd9\u79cd\u65b9\u6848\u6709\u4e00\u4e2a\u81f4\u547d\u95ee\u9898\uff0c\u5c31\u662f\u67d0\u4e2a\u7ebf\u7a0b\u5728\u83b7\u53d6\u9501\u4e4b\u540e\u7531\u4e8e\u67d0\u4e9b\u5f02\u5e38\u56e0\u7d20(\u6bd4\u5982\u5b95\u673a)\u800c\u4e0d\u80fd\u6b63\u5e38\u7684\u6267\u884c\u89e3\u9501\u64cd\u4f5c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9501\u5c31\u6c38\u8fdc\u91ca\u653e\u4e0d\u6389\u4e86\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u4e3a\u8fd9\u4e2a\u9501\u52a0\u4e0a\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\u3002***\u65f6\u95f4\u6211\u4eec\u4f1a\u8054\u60f3\u5230Redis\u7684EXPIRE\u547d\u4ee4(EXPIRE key seconds)\u3002\u4f46\u662f\u8fd9\u91cc\u6211\u4eec\u4e0d\u80fd\u4f7f\u7528EXPIRE\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u56e0\u4e3a\u5b83\u4e0eSETNX\u4e00\u8d77\u662f\u4e24\u4e2a\u64cd\u4f5c\uff0c\u5728\u8fd9\u4e24\u4e2a\u64cd\u4f5c\u4e4b\u95f4\u53ef\u80fd\u4f1a\u53d1\u751f\u5f02\u5e38\uff0c\u4ece\u800c\u8fd8\u662f\u8fbe\u4e0d\u5230\u9884\u671f\u7684\u7ed3\u679c\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>\/\/&nbsp;STEP&nbsp;1&nbsp;\r\nSETNX&nbsp;key&nbsp;value&nbsp;\r\n\/\/&nbsp;\u82e5\u5728\u8fd9\u91cc\uff08STEP1\u548cSTEP2\u4e4b\u95f4\uff09\u7a0b\u5e8f\u7a81\u7136\u5d29\u6e83\uff0c\u5219\u65e0\u6cd5\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5c06\u6709\u53ef\u80fd\u65e0\u6cd5\u91ca\u653e\u9501&nbsp;\r\n\/\/&nbsp;STEP&nbsp;2&nbsp;\r\nEXPIRE&nbsp;key&nbsp;expireTime&nbsp;\r\n<\/pre>\n<p>\u5bf9\u6b64\uff0c\u6b63\u786e\u7684\u59ff\u52bf\u5e94\u8be5\u662f\u4f7f\u7528\u201cSET key value [EX seconds] [PX milliseconds] [NX|XX]\u201d\u8fd9\u4e2a\u547d\u4ee4\u3002<\/p>\n<p>\u4ece Redis 2.6.12 \u7248\u672c\u5f00\u59cb\uff0c SET \u547d\u4ee4\u7684\u884c\u4e3a\u53ef\u4ee5\u901a\u8fc7\u4e00\u7cfb\u5217\u53c2\u6570\u6765\u4fee\u6539\uff1a<\/p>\n<ul>\n<li>EX seconds \uff1a \u5c06\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3a seconds \u79d2\u3002 \u6267\u884c SET key value EX seconds \u7684\u6548\u679c\u7b49\u540c\u4e8e\u6267\u884c SETEX key seconds value \u3002<\/li>\n<li>PX milliseconds \uff1a \u5c06\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3a milliseconds \u6beb\u79d2\u3002 \u6267\u884c SET key value PX milliseconds \u7684\u6548\u679c\u7b49\u540c\u4e8e\u6267\u884c PSETEX key milliseconds value \u3002<\/li>\n<li>NX \uff1a \u53ea\u5728\u952e\u4e0d\u5b58\u5728\u65f6\uff0c \u624d\u5bf9\u952e\u8fdb\u884c\u8bbe\u7f6e\u64cd\u4f5c\u3002 \u6267\u884c SET key value NX \u7684\u6548\u679c\u7b49\u540c\u4e8e\u6267\u884c SETNX key value \u3002<\/li>\n<li>XX \uff1a \u53ea\u5728\u952e\u5df2\u7ecf\u5b58\u5728\u65f6\uff0c \u624d\u5bf9\u952e\u8fdb\u884c\u8bbe\u7f6e\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u4e3e\u4f8b\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5206\u5e03\u5f0f\u9501\uff0c\u5e76\u4e14\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4e3a10s\uff0c\u90a3\u4e48\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<\/p>\n<pre>SET&nbsp;lockKey&nbsp;lockValue&nbsp;EX&nbsp;10&nbsp;NX&nbsp;\r\nSET&nbsp;lockKey&nbsp;lockValue&nbsp;PX&nbsp;10000&nbsp;NX&nbsp;\r\n<\/pre>\n<p>\u6ce8\u610fEX\u548cPX\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528\uff0c\u5426\u5219\u4f1a\u62a5\u9519\uff1aERR syntax error\u3002<\/p>\n<p>\u89e3\u9501\u7684\u65f6\u5019\u8fd8\u662f\u4f7f\u7528DEL\u547d\u4ee4\u6765\u89e3\u9501\u3002<\/p>\n<p>\u4fee\u6539\u4e4b\u540e\u7684\u65b9\u6848\u770b\u4e0a\u53bb\u5f88***\uff0c\u4f46\u5b9e\u9645\u4e0a\u8fd8\u662f\u4f1a\u6709\u95ee\u9898\u3002\u8bd5\u60f3\u4e00\u4e0b\uff0c\u67d0\u7ebf\u7a0bA\u83b7\u53d6\u4e86\u9501\u5e76\u4e14\u8bbe\u7f6e\u4e86\u8fc7\u671f\u65f6\u95f4\u4e3a10s\uff0c\u7136\u540e\u5728\u6267\u884c\u4e1a\u52a1\u903b\u8f91\u7684\u65f6\u5019\u8017\u8d39\u4e8615s\uff0c\u6b64\u65f6\u7ebf\u7a0bA\u83b7\u53d6\u7684\u9501\u65e9\u5df2\u88abRedis\u7684\u8fc7\u671f\u673a\u5236\u81ea\u52a8\u91ca\u653e\u4e86\u3002\u5728\u7ebf\u7a0bA\u83b7\u53d6\u9501\u5e76\u7ecf\u8fc710s\u4e4b\u540e\uff0c\u6539\u9501\u53ef\u80fd\u5df2\u7ecf\u88ab\u5176\u5b83\u7ebf\u7a0b\u83b7\u53d6\u5230\u4e86\u3002\u5f53\u7ebf\u7a0bA\u6267\u884c\u5b8c\u4e1a\u52a1\u903b\u8f91\u51c6\u5907\u89e3\u9501(DEL key)\u7684\u65f6\u5019\uff0c\u6709\u53ef\u80fd\u5220\u9664\u6389\u7684\u662f\u5176\u5b83\u7ebf\u7a0b\u5df2\u7ecf\u83b7\u53d6\u5230\u7684\u9501\u3002<\/p>\n<p>\u6240\u4ee5***\u7684\u65b9\u5f0f\u662f\u5728\u89e3\u9501\u65f6\u5224\u65ad\u9501\u662f\u5426\u662f\u81ea\u5df1\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u8bbe\u7f6ekey\u7684\u65f6\u5019\u5c06value\u8bbe\u7f6e\u4e3a\u4e00\u4e2a\u552f\u4e00\u503cuniqueValue(\u53ef\u4ee5\u662f\u968f\u673a\u503c\u3001UUID\u3001\u6216\u8005\u673a\u5668\u53f7+\u7ebf\u7a0b\u53f7\u7684\u7ec4\u5408\u3001\u7b7e\u540d\u7b49)\u3002\u5f53\u89e3\u9501\u65f6\uff0c\u4e5f\u5c31\u662f\u5220\u9664key\u7684\u65f6\u5019\u5148\u5224\u65ad\u4e00\u4e0bkey\u5bf9\u5e94\u7684value\u662f\u5426\u7b49\u4e8e\u5148\u524d\u8bbe\u7f6e\u7684\u503c\uff0c\u5982\u679c\u76f8\u7b49\u624d\u80fd\u5220\u9664key\uff0c\u4f2a\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>if&nbsp;uniqueKey&nbsp;==&nbsp;GET(key)&nbsp;{&nbsp;\r\n&nbsp;&nbsp;&nbsp;&nbsp;DEL&nbsp;key&nbsp;\r\n<\/pre>\n<p>\u8fd9\u91cc\u6211\u4eec\u4e00\u773c\u5c31\u53ef\u4ee5\u770b\u51fa\u95ee\u9898\u6765\uff1aGET\u548cDEL\u662f\u4e24\u4e2a\u5206\u5f00\u7684\u64cd\u4f5c\uff0c\u5728GET\u6267\u884c\u4e4b\u540e\u4e14\u5728DEL\u6267\u884c\u4e4b\u524d\u7684\u95f4\u9699\u662f\u53ef\u80fd\u4f1a\u53d1\u751f\u5f02\u5e38\u7684\u3002\u5982\u679c\u6211\u4eec\u53ea\u8981\u4fdd\u8bc1\u89e3\u9501\u7684\u4ee3\u7801\u662f\u539f\u5b50\u6027\u7684\u5c31\u80fd\u89e3\u51b3\u95ee\u9898\u4e86\u3002\u8fd9\u91cc\u6211\u4eec\u5f15\u5165\u4e86\u4e00\u79cd\u65b0\u7684\u65b9\u5f0f\uff0c\u5c31\u662fLua\u811a\u672c\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>if&nbsp;redis.call(\"get\",KEYS[1])&nbsp;==&nbsp;ARGV[1]&nbsp;then&nbsp;\r\n&nbsp;return&nbsp;redis.call(\"del\",KEYS[1])&nbsp;\r\nelse&nbsp;\r\n&nbsp;return&nbsp;0&nbsp;\r\nend&nbsp;\r\n<\/pre>\n<p>\u5176\u4e2dARGV[1]\u8868\u793a\u8bbe\u7f6ekey\u65f6\u6307\u5b9a\u7684\u552f\u4e00\u503c\u3002<\/p>\n<p>\u7531\u4e8eLua\u811a\u672c\u7684\u539f\u5b50\u6027\uff0c\u5728Redis\u6267\u884c\u8be5\u811a\u672c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5176\u4ed6\u5ba2\u6237\u7aef\u7684\u547d\u4ee4\u90fd\u9700\u8981\u7b49\u5f85\u8be5Lua\u811a\u672c\u6267\u884c\u5b8c\u624d\u80fd\u6267\u884c\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u4f7f\u7528Jedis\u6765\u6f14\u793a\u4e00\u4e0b\u83b7\u53d6\u9501\u548c\u89e3\u9501\u7684\u5b9e\u73b0\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>public&nbsp;boolean&nbsp;lock(String&nbsp;lockKey,&nbsp;String&nbsp;uniqueValue,&nbsp;int&nbsp;seconds){&nbsp;\r\n&nbsp;SetParams&nbsp;params&nbsp;=&nbsp;new&nbsp;SetParams();&nbsp;\r\n&nbsp;params.nx().ex(seconds);&nbsp;\r\n&nbsp;String&nbsp;result&nbsp;=&nbsp;jedis.set(lockKey,&nbsp;uniqueValue,&nbsp;params);&nbsp;\r\n&nbsp;if&nbsp;(\"OK\".equals(result))&nbsp;{&nbsp;\r\n&nbsp;return&nbsp;true;&nbsp;\r\n&nbsp;return&nbsp;false;&nbsp;\r\npublic&nbsp;boolean&nbsp;unlock(String&nbsp;lockKey,&nbsp;String&nbsp;uniqueValue){&nbsp;\r\n&nbsp;String&nbsp;script&nbsp;=&nbsp;\"if&nbsp;redis.call('get',&nbsp;KEYS[1])&nbsp;==&nbsp;ARGV[1]&nbsp;\"&nbsp;+&nbsp;\r\n&nbsp;\"then&nbsp;return&nbsp;redis.call('del',&nbsp;KEYS[1])&nbsp;else&nbsp;return&nbsp;0&nbsp;end\";&nbsp;\r\n&nbsp;Object&nbsp;result&nbsp;=&nbsp;jedis.eval(script,&nbsp;&nbsp;\r\n&nbsp;Collections.singletonList(lockKey),&nbsp;&nbsp;\r\n&nbsp;Collections.singletonList(uniqueValue));&nbsp;\r\n&nbsp;if&nbsp;(result.equals(1))&nbsp;{&nbsp;\r\n&nbsp;return&nbsp;true;&nbsp;\r\n&nbsp;return&nbsp;false;&nbsp;\r\n<\/pre>\n<p>\u5982\u6b64\u5c31\u4e07\u65e0\u4e00\u5931\u4e86\u5417?\u663e\u7136\u4e0d\u662f!<\/p>\n<p>\u8868\u9762\u6765\u770b\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4f3c\u4e4e\u5f88\u7ba1\u7528\uff0c\u4f46\u662f\u8fd9\u91cc\u5b58\u5728\u4e00\u4e2a\u95ee\u9898\uff1a\u5728\u6211\u4eec\u7684\u7cfb\u7edf\u67b6\u6784\u91cc\u5b58\u5728\u4e00\u4e2a\u5355\u70b9\u6545\u969c\uff0c\u5982\u679cRedis\u7684master\u8282\u70b9\u5b95\u673a\u4e86\u600e\u4e48\u529e\u5462?\u6709\u4eba\u53ef\u80fd\u4f1a\u8bf4\uff1a\u52a0\u4e00\u4e2aslave\u8282\u70b9!\u5728master\u5b95\u673a\u65f6\u7528slave\u5c31\u884c\u4e86!<\/p>\n<p>\u4f46\u662f\u5176\u5b9e\u8fd9\u4e2a\u65b9\u6848\u660e\u663e\u662f\u4e0d\u53ef\u884c\u7684\uff0c\u56e0\u4e3aRedis\u7684\u590d\u5236\u662f\u5f02\u6b65\u7684\u3002\u4e3e\u4f8b\u6765\u8bf4\uff1a<\/p>\n<ol>\n<li>\u7ebf\u7a0bA\u5728master\u8282\u70b9\u62ff\u5230\u4e86\u9501\u3002<\/li>\n<li>master\u8282\u70b9\u5728\u628aA\u521b\u5efa\u7684key\u5199\u5165slave\u4e4b\u524d\u5b95\u673a\u4e86\u3002<\/li>\n<li>slave\u53d8\u6210\u4e86master\u8282\u70b9\u3002<\/li>\n<li>\u7ebf\u7a0bB\u4e5f\u5f97\u5230\u4e86\u548cA\u8fd8\u6301\u6709\u7684\u76f8\u540c\u7684\u9501\u3002(\u56e0\u4e3a\u539f\u6765\u7684slave\u91cc\u9762\u8fd8\u6ca1\u6709A\u6301\u6709\u9501\u7684\u4fe1\u606f)<\/li>\n<\/ol>\n<p>\u5f53\u7136\uff0c\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u8fd9\u4e2a\u65b9\u6848\u6ca1\u6709\u4ec0\u4e48\u95ee\u9898\uff0c\u6bd4\u5982\u4e1a\u52a1\u6a21\u578b\u5141\u8bb8\u540c\u65f6\u6301\u6709\u9501\u7684\u60c5\u51b5\uff0c\u90a3\u4e48\u4f7f\u7528\u8fd9\u79cd\u65b9\u6848\u4e5f\u672a\u5c1d\u4e0d\u53ef\u3002<\/p>\n<p>\u4e3e\u4f8b\u8bf4\u660e\uff0c\u67d0\u4e2a\u670d\u52a1\u67092\u4e2a\u670d\u52a1\u5b9e\u4f8b\uff1aA\u548cB\uff0c\u521d\u59cb\u60c5\u51b5\u4e0bA\u83b7\u53d6\u4e86\u9501\u7136\u540e\u5bf9\u8d44\u6e90\u8fdb\u884c\u64cd\u4f5c(\u53ef\u4ee5\u5047\u8bbe\u8fd9\u4e2a\u64cd\u4f5c\u5f88\u8017\u8d39\u8d44\u6e90)\uff0cB\u6ca1\u6709\u83b7\u53d6\u5230\u9501\u800c\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\uff0c\u6b64\u65f6B\u53ef\u4ee5\u770b\u505a\u662fA\u7684\u70ed\u5907\u3002\u5f53A\u51fa\u73b0\u5f02\u5e38\u65f6\uff0cB\u53ef\u4ee5\u201c\u8f6c\u6b63\u201d\u3002\u5f53\u9501\u51fa\u73b0\u5f02\u5e38\u65f6\uff0c\u6bd4\u5982Redis master\u5b95\u673a\uff0c\u90a3\u4e48B\u53ef\u80fd\u4f1a\u540c\u65f6\u6301\u6709\u9501\u5e76\u4e14\u5bf9\u8d44\u6e90\u8fdb\u884c\u64cd\u4f5c\uff0c\u5982\u679c\u64cd\u4f5c\u7684\u7ed3\u679c\u662f\u5e42\u7b49\u7684(\u6216\u8005\u5176\u5b83\u60c5\u51b5)\uff0c\u90a3\u4e48\u4e5f\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u6848\u3002\u8fd9\u91cc\u5f15\u5165\u5206\u5e03\u5f0f\u9501\u53ef\u4ee5\u8ba9\u670d\u52a1\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u800c\u9020\u6210\u8d44\u6e90\u7684\u6d6a\u8d39\u3002<\/p>\n<p>\u4e3a\u4e86\u5e94\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0cantriez\u63d0\u51fa\u4e86Redlock\u7b97\u6cd5\u3002Redlock\u7b97\u6cd5\u7684\u4e3b\u8981\u601d\u60f3\u662f\uff1a\u5047\u8bbe\u6211\u4eec\u6709N\u4e2aRedis master\u8282\u70b9\uff0c\u8fd9\u4e9b\u8282\u70b9\u90fd\u662f\u5b8c\u5168\u72ec\u7acb\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u8fd0\u7528\u524d\u9762\u7684\u65b9\u6848\u6765\u5bf9\u524d\u9762\u5355\u4e2a\u7684Redis master\u8282\u70b9\u6765\u83b7\u53d6\u9501\u548c\u89e3\u9501\uff0c\u5982\u679c\u6211\u4eec\u603b\u4f53\u4e0a\u80fd\u5728\u5408\u7406\u7684\u8303\u56f4\u5185\u6216\u8005N\/2+1\u4e2a\u9501\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u6210\u529f\u83b7\u5f97\u4e86\u9501\uff0c\u53cd\u4e4b\u5219\u6ca1\u6709\u83b7\u53d6\u9501(\u53ef\u7c7b\u6bd4Quorum\u6a21\u578b)\u3002\u867d\u7136Redlock\u7684\u539f\u7406\u5f88\u597d\u7406\u89e3\uff0c\u4f46\u662f\u5176\u5185\u90e8\u7684\u5b9e\u73b0\u7ec6\u8282\u5f88\u662f\u590d\u6742\uff0c\u8981\u8003\u8651\u5f88\u591a\u56e0\u7d20<\/p>\n<p>Redlock\u7b97\u6cd5\u4e5f\u5e76\u975e\u662f\u201c\u94f6\u5f39\u201d\uff0c\u4ed6\u9664\u4e86\u6761\u4ef6\u6709\u70b9\u82db\u523b\u5916\uff0c\u5176\u7b97\u6cd5\u672c\u8eab\u4e5f\u88ab\u8d28\u7591\u3002\u5173\u4e8eRedis\u5206\u5e03\u5f0f\u9501\u7684\u5b89\u5168\u6027\u95ee\u9898\uff0c\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e13\u5bb6Martin Kleppmann\u548cRedis\u7684\u4f5c\u8005antirez\u4e4b\u95f4\u5c31\u53d1\u751f\u8fc7\u4e00\u573a\u4e89\u8bba\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u6240\u63a8\u5d07\u7684Redis\u5206\u5e03\u5f0f\u9501\u771f&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201401","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201401"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201401\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}