{"id":10032,"date":"2024-04-08T22:47:51","date_gmt":"2024-04-08T14:47:51","guid":{"rendered":"https:\/\/egonlin.com\/?p=10032"},"modified":"2024-04-08T22:50:32","modified_gmt":"2024-04-08T14:50:32","slug":"%e5%87%a0%e7%a7%8d%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%9a%84%e5%ae%9e%e7%8e%b0%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=10032","title":{"rendered":"\u51e0\u79cd\u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\u65b9\u5f0f"},"content":{"rendered":"<h1>\u7b80\u4ecb<\/h1>\n<p>\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5404\u7cfb\u7edf\u540c\u6b65\u8bbf\u95ee\u5171\u540c\u7684\u8d44\u6e90\u662f\u5f88\u5e38\u89c1\u7684\u3002\u56e0\u6b64\u6211\u4eec\u5e38\u5e38\u9700\u8981\u534f\u8c03\u4ed6\u4eec\u7684\u52a8\u4f5c\u3002 \u5982\u679c\u4e0d\u540c\u7684\u7cfb\u7edf\u6216\u662f\u540c\u4e00\u4e2a\u7cfb\u7edf\u7684\u4e0d\u540c\u4e3b\u673a\u4e4b\u95f4\u5171\u4eab\u4e86\u4e00\u4e2a\u6216\u4e00\u7ec4\u8d44\u6e90\uff0c\u90a3\u4e48\u8bbf\u95ee\u8fd9\u4e9b\u8d44\u6e90\u7684\u65f6\u5019\uff0c\u5f80\u5f80\u9700\u8981\u4e92\u65a5\u6765\u9632\u6b62\u5f7c\u6b64\u5e72\u6270\u6765\u4fdd\u8bc1\u4e00\u81f4\u6027\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4fbf\u9700\u8981\u4f7f\u7528\u5230\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n<hr \/>\n<p>\u4e00\u4e2a\u597d\u7684\u5206\u5e03\u5f0f\u9501\u5e38\u5e38\u9700\u8981\u4ee5\u4e0b\u7279\u6027:<\/p>\n<ul>\n<li>\u53ef\u91cd\u5165<\/li>\n<li>\u540c\u4e00\u65f6\u95f4\u70b9,\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6301\u6709\u9501<\/li>\n<li>\u5bb9\u9519\u6027, \u5f53\u9501\u8282\u70b9\u5b95\u673a\u65f6, \u80fd\u53ca\u65f6\u91ca\u653e\u9501<\/li>\n<li>\u9ad8\u6027\u80fd<\/li>\n<li>\u65e0\u5355\u70b9\u95ee\u9898<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587223168.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587223168.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<h1>\u4e00. \u57fa\u4e8e\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501<\/h1>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587248051.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587248051.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u57fa\u4e8e\u6570\u636e\u5e93\u7684\u5206\u5e03\u5f0f\u9501, \u5e38\u7528\u7684\u4e00\u79cd\u65b9\u5f0f\u662f\u4f7f\u7528\u8868\u7684\u552f\u4e00\u7ea6\u675f\u7279\u6027\u3002\u5f53\u5f80\u6570\u636e\u5e93\u4e2d\u6210\u529f\u63d2\u5165\u4e00\u6761\u6570\u636e\u65f6, \u4ee3\u8868\u53ea\u83b7\u53d6\u5230\u9501\u3002\u5c06\u8fd9\u6761\u6570\u636e\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\uff0c\u5219\u91ca\u653e\u9001\u3002<br \/>\n\u56e0\u6b64\u9700\u8981\u521b\u5efa\u4e00\u5f20\u9501\u8868<\/p>\n<pre><code>CREATE TABLE `methodLock` (\n  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT &#039;\u4e3b\u952e&#039;,\n  `method_name` varchar(64) NOT NULL DEFAULT &#039;&#039; COMMENT &#039;\u9501\u5b9a\u7684\u65b9\u6cd5\u540d&#039;,\n  `cust_id` varchar(1024) NOT NULL DEFAULT &#039;\u5ba2\u6237\u7aef\u552f\u4e00\u7f16\u7801&#039;,\n  `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT &#039;\u4fdd\u5b58\u6570\u636e\u65f6\u95f4\uff0c\u81ea\u52a8\u751f\u6210&#039;,\n  PRIMARY KEY (`id`),\n  UNIQUE KEY `uidx_method_name` (`method_name `) USING BTREE\n)\n ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT=&#039;\u9501\u5b9a\u4e2d\u7684\u65b9\u6cd5&#039;;\n<\/code><\/pre>\n<p>\u6dfb\u52a0\u9501<\/p>\n<pre><code>insert into methodLock(method_name,cust_id) values (\u2018method_name\u2019,\u2018cust_id\u2019)\n<\/code><\/pre>\n<p>\u8fd9\u91cccust_id \u53ef\u4ee5\u662f\u673a\u5668\u7684mac\u5730\u5740+\u7ebf\u7a0b\u7f16\u53f7, \u786e\u4fdd\u4e00\u4e2a\u7ebf\u7a0b\u53ea\u6709\u552f\u4e00\u7684\u4e00\u4e2a\u7f16\u53f7\u3002\u901a\u8fc7\u8fd9\u4e2a\u7f16\u53f7\uff0c \u53ef\u4ee5\u6709\u6548\u7684\u5224\u65ad\u662f\u5426\u4e3a\u9501\u7684\u521b\u5efa\u8005\uff0c\u4ece\u800c\u8fdb\u884c\u9501\u7684\u91ca\u653e\u4ee5\u53ca\u91cd\u5165\u9501\u5224\u65ad<\/p>\n<p>\u91ca\u653e\u9501<\/p>\n<pre><code>delete from methodLock where method_name =&#039;method_name&#039; and cust_id = &#039;cust_id&#039;\n<\/code><\/pre>\n<p>\u91cd\u5165\u9501\u5224\u65ad<\/p>\n<pre><code>select 1 from methodLock where method_name =&#039;method_name&#039; and cust_id = &#039;cust_id&#039;\n<\/code><\/pre>\n<p>\u52a0\u9501\u4ee5\u53ca\u91ca\u653e\u9501\u7684\u4ee3\u7801\u793a\u4f8b<\/p>\n<pre><code>\/**\n* \u83b7\u53d6\u9501\n*\/\npublic boolean lock(String methodName){\n    boolean success = false;\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    try{\n        \/\/\u6dfb\u52a0\u9501\n       success = insertLock(methodName, custId);\n    } catch(Exception e) {\n        \/\/\u5982\u6dfb\u52a0\u5931\u8d25\n    }\n    return success;\n}\n\n\/**\n* \u91ca\u653e\u9501\n*\/\npublic boolean unlock(String methodName) {\n    boolean success = false;\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    try{\n        \/\/\u6dfb\u52a0\u9501\n       success = deleteLock(methodName, custId);\n    } catch(Exception e) {\n        \/\/\u5982\u6dfb\u52a0\u5931\u8d25\n    }\n    return success;\n}\n<\/code><\/pre>\n<p>\u5b8c\u6574\u6d41\u7a0b<\/p>\n<pre><code>public void test() {\n    String methodName = &quot;methodName&quot;;\n    \/\/\u5224\u65ad\u662f\u5426\u91cd\u5165\u9501\n    if (!checkReentrantLock(methodName)) {\n        \/\/\u975e\u91cd\u5165\u9501\n        while (!lock(methodName)) {\n            \/\/\u83b7\u53d6\u9501\u5931\u8d25, \u5219\u963b\u585e\u81f3\u83b7\u53d6\u9501\n            try{\n                Thread.sleep(100)\n            } catch(Exception e) {\n            }\n        }\n    }\n    \/\/TODO \u4e1a\u52a1\u5904\u7406\n\n    \/\/\u91ca\u653e\u9501\n    unlock(methodName);\n}\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u8fd8\u5b58\u5728\u4e00\u4e9b\u95ee\u9898:<\/p>\n<ul>\n<li>\u6ca1\u6709\u5931\u6548\u65f6\u95f4\u3002 \u89e3\u51b3\u65b9\u6848:\u8bbe\u7f6e\u4e00\u4e2a\u5b9a\u65f6\u5904\u7406, \u5b9a\u671f\u6e05\u7406\u8fc7\u671f\u9501<\/li>\n<li>\u5355\u70b9\u95ee\u9898\u3002 \u89e3\u51b3\u65b9\u6848: \u5f04\u51e0\u4e2a\u5907\u4efd\u6570\u636e\u5e93\uff0c\u6570\u636e\u5e93\u4e4b\u524d\u53cc\u5411\u540c\u6b65\uff0c\u4e00\u65e6\u6302\u6389\u5feb\u901f\u5207\u6362\u5230\u5907\u5e93\u4e0a<\/li>\n<\/ul>\n<h1>\u4e8c. \u57fa\u4e8eredis\u7684\u5206\u5e03\u5f0f\u9501<\/h1>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587359289.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587359289.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n\u4f7f\u7528redis \u7684set(String key, String value, String nxxx, String expx, int time)\u547d\u4ee4<\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u4e3akey\uff0c\u6211\u4eec\u4f7f\u7528key\u6765\u5f53\u9501\uff0c\u56e0\u4e3akey\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u4e3avalue\uff0c\u6211\u4eec\u4f20\u7684\u662fcustId\uff0c\u8fd9\u91cccust_id \u53ef\u4ee5\u662f\u673a\u5668\u7684mac\u5730\u5740+\u7ebf\u7a0b\u7f16\u53f7, \u786e\u4fdd\u4e00\u4e2a\u7ebf\u7a0b\u53ea\u6709\u552f\u4e00\u7684\u4e00\u4e2a\u7f16\u53f7\u3002\u901a\u8fc7\u8fd9\u4e2a\u7f16\u53f7\uff0c \u53ef\u4ee5\u6709\u6548\u7684\u5224\u65ad\u662f\u5426\u4e3a\u9501\u7684\u521b\u5efa\u8005\uff0c\u4ece\u800c\u8fdb\u884c\u9501\u7684\u91ca\u653e\u4ee5\u53ca\u91cd\u5165\u9501\u5224\u65ad<\/li>\n<li>\u7b2c\u4e09\u4e2a\u4e3anxxx\uff0c\u8fd9\u4e2a\u53c2\u6570\u6211\u4eec\u586b\u7684\u662fNX\uff0c\u610f\u601d\u662fSET IF NOT EXIST\uff0c\u5373\u5f53key\u4e0d\u5b58\u5728\u65f6\uff0c\u6211\u4eec\u8fdb\u884cset\u64cd\u4f5c\uff1b\u82e5key\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u4e0d\u505a\u4efb\u4f55\u64cd\u4f5c<\/li>\n<li>\u7b2c\u56db\u4e2a\u4e3aexpx\uff0c\u8fd9\u4e2a\u53c2\u6570\u6211\u4eec\u4f20\u7684\u662fPX\uff0c\u610f\u601d\u662f\u6211\u4eec\u8981\u7ed9\u8fd9\u4e2akey\u52a0\u4e00\u4e2a\u8fc7\u671f\u7684\u8bbe\u7f6e\uff0c\u5177\u4f53\u65f6\u95f4\u7531\u7b2c\u4e94\u4e2a\u53c2\u6570\u51b3\u5b9a\u3002<\/li>\n<li>\u7b2c\u4e94\u4e2a\u4e3atime\uff0c\u4e0e\u7b2c\u56db\u4e2a\u53c2\u6570\u76f8\u547c\u5e94\uff0c\u4ee3\u8868key\u7684\u8fc7\u671f\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<p>\u4ee3\u7801\u793a\u4f8b<\/p>\n<pre><code>private static final String LOCK_SUCCESS = &quot;OK&quot;;\nprivate static final String SET_IF_NOT_EXIST = &quot;NX&quot;;\nprivate static final String SET_WITH_EXPIRE_TIME = &quot;PX&quot;;\nprivate static final Long RELEASE_SUCCESS = 1L;\n\n\/\/ Redis\u5ba2\u6237\u7aef\nprivate Jedis jedis;\n\n\/**\n * \u5c1d\u8bd5\u83b7\u53d6\u5206\u5e03\u5f0f\u9501\n * @param lockKey \u9501\n * @param expireTime \u8d85\u671f\u65f6\u95f4\n * @return \u662f\u5426\u83b7\u53d6\u6210\u529f\n *\/\npublic boolean lock(String lockKey, int expireTime) {\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    String result = jedis.set(lockKey, custId, SET_IF_NOT_EXIST, SET_WITH_EXPIRE_TIME, expireTime);\n\n    if (LOCK_SUCCESS.equals(result)) {\n        return true;\n    }\n\n    return false;\n}\n\n\/**\n * \u91ca\u653e\u5206\u5e03\u5f0f\u9501\n * @param lockKey \u9501\n * @param requestId \u8bf7\u6c42\u6807\u8bc6\n * @return \u662f\u5426\u91ca\u653e\u6210\u529f\n *\/\npublic boolean unlock(String lockKey,) {\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    String script = &quot;if redis.call(&#039;get&#039;, KEYS[1]) == ARGV[1] then return redis.call(&#039;del&#039;, KEYS[1]) else return 0 end&quot;;\n    Object result = jedis.eval(script, Collections.singletonList(lockKey), Collections.singletonList(custId));\n\n    if (RELEASE_SUCCESS.equals(result)) {\n        return true;\n    }\n    return false;\n}\n\n\/**\n * \u83b7\u53d6\u9501\u4fe1\u606f\n * @param lockKey \u9501\n * @return \u662f\u5426\u91cd\u5165\u9501\n *\/\npublic boolean checkReentrantLock(String lockKey){\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n\n    \/\/\u83b7\u53d6\u5f53\u524d\u9501\u7684\u5ba2\u6237\u552f\u4e00\u8868\u793a\u7801\n    String currentCustId = redis.get(lockKey);\n    if (custId.equals(currentCustId)) {\n        return true;\n    }\n    return false;\n}\n<\/code><\/pre>\n<p>\u5b8c\u6574\u6d41\u7a0b<\/p>\n<pre><code>public void test() {\n    String lockKey = &quot;lockKey&quot;;\n    \/\/\u5224\u65ad\u662f\u5426\u91cd\u5165\u9501\n    if (!checkReentrantLock(lockKey)) {\n        \/\/\u975e\u91cd\u5165\u9501\n        while (!lock(lockKey)) {\n            \/\/\u83b7\u53d6\u9501\u5931\u8d25, \u5219\u963b\u585e\u81f3\u83b7\u53d6\u9501\n            try{\n                Thread.sleep(100)\n            } catch(Exception e) {\n            }\n        }\n    }\n    \/\/TODO \u4e1a\u52a1\u5904\u7406\n\n    \/\/\u91ca\u653e\u9501\n    unlock(lockKey);\n}\n<\/code><\/pre>\n<h1>\u4e09. \u57fa\u4e8ememcached\u7684\u5206\u5e03\u5f0f\u9501<\/h1>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587411853.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587411853.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\nmemcached\u7684\u5b9e\u73b0\u65b9\u5f0f\u548credis\u7c7b\u4f3c, \u4f7f\u7528\u7684\u662f\u547d\u4ee4add(key, value, expireDate),\u6ce8:\u4ec5\u5f53\u7f13\u5b58\u4e2d\u4e0d\u5b58\u5728\u952e\u65f6\uff0c\u624d\u4f1a\u6dfb\u52a0\u6210\u529f<\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u4e3akey\uff0c\u6211\u4eec\u4f7f\u7528key\u6765\u5f53\u9501\uff0c\u56e0\u4e3akey\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u4e3avalue\uff0c\u6211\u4eec\u4f20\u7684\u662fcustId\uff0c\u8fd9\u91cccust_id<\/li>\n<li>\u7b2c\u4e09\u4e2a\u4e3aexpireDate, \u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4,\u6bd4\u5982\uff1a new Date(1000*10)\uff0c\u5219\u8868\u793a\u5341\u79d2\u4e4b\u540e\u4eceMemcached\u5185\u5b58\u7f13\u5b58\u4e2d\u5220\u9664\uff09\u3002<\/li>\n<\/ul>\n<p>\u4ee3\u7801\u793a\u4f8b<\/p>\n<pre><code>\/\/ Redis\u5ba2\u6237\u7aef\nprivate MemCachedClient memCachedClient;\n\n\/**\n * \u5c1d\u8bd5\u83b7\u53d6\u5206\u5e03\u5f0f\u9501\n * @param lockKey \u9501\n * @param expireTime \u8d85\u671f\u65f6\u95f4\n * @return \u662f\u5426\u83b7\u53d6\u6210\u529f\n *\/\npublic boolean lock(String lockKey, Date expireDate) {\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    Boolean result = false;\n    try {\n        result = memCachedClient.add(lockKey, custId,expireDate);\n    } catch(Excetion e) {\n    }\n    return result;\n}\n\n\/**\n * \u91ca\u653e\u5206\u5e03\u5f0f\u9501\n * @param lockKey \u9501\n * @param requestId \u8bf7\u6c42\u6807\u8bc6\n * @return \u662f\u5426\u91ca\u653e\u6210\u529f\n *\/\npublic boolean unlock(String lockKey,) {\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    Boolean result = false;\n    try {\n        String currentCustId = memCachedClient.get(lockKey);\n        if (custId.equals(currentCustId)) {\n            result = memCachedClient.delete(lockKey, custId,expireDate);\n        }\n    } catch(Excetion e) {\n    }\n    return result;\n}\n\n\/**\n * \u83b7\u53d6\u9501\u4fe1\u606f\n * @param lockKey \u9501\n * @return \u662f\u5426\u91cd\u5165\u9501\n *\/\npublic boolean checkReentrantLock(String lockKey){\n    \/\/\u83b7\u53d6\u5ba2\u6237\u552f\u4e00\u8bc6\u522b\u7801,\u4f8b\u5982:mac+\u7ebf\u7a0b\u4fe1\u606f\n    String custId = getCustId();\n    \/\/\u83b7\u53d6\u5f53\u524d\u9501\u7684\u5ba2\u6237\u552f\u4e00\u8868\u793a\u7801\n    try {\n         String currentCustId = memCachedClient.get(lockKey);\n        if (custId.equals(currentCustId)) {\n            return true;\n        }\n    } catch(Excetion e) {\n    }\n\n    return false;\n}\n<\/code><\/pre>\n<p>\u5b8c\u6574\u6d41\u7a0b<\/p>\n<pre><code>public void test() {\n    String lockKey = &quot;lockKey&quot;;\n    \/\/\u5224\u65ad\u662f\u5426\u91cd\u5165\u9501\n    if (!checkReentrantLock(lockKey)) {\n        \/\/\u975e\u91cd\u5165\u9501\n        while (!lock(lockKey)) {\n            \/\/\u83b7\u53d6\u9501\u5931\u8d25, \u5219\u963b\u585e\u81f3\u83b7\u53d6\u9501\n            try{\n                Thread.sleep(100)\n            } catch(Exception e) {\n            }\n        }\n    }\n    \/\/TODO \u4e1a\u52a1\u5904\u7406\n\n    \/\/\u91ca\u653e\u9501\n    unlock(lockKey);\n}\n<\/code><\/pre>\n<h1>\u56db. \u57fa\u4e8ezookeeper\u7684\u5206\u5e03\u5f0f\u9501<\/h1>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587465125.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/04\/image-1712587465125.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<pre><code>\u57fa\u4e8ezookeeper\u4e34\u65f6\u6709\u5e8f\u8282\u70b9\u53ef\u4ee5\u5b9e\u73b0\u7684\u5206\u5e03\u5f0f\u9501\u3002\n\u5927\u81f4\u601d\u60f3\u5373\u4e3a\uff1a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u5bf9\u67d0\u4e2a\u65b9\u6cd5\u52a0\u9501\u65f6\uff0c\u5728zookeeper\u4e0a\u7684\u4e0e\u8be5\u65b9\u6cd5\u5bf9\u5e94\u7684\u6307\u5b9a\u8282\u70b9\u7684\u76ee\u5f55\u4e0b\uff0c\n\u751f\u6210\u4e00\u4e2a\u552f\u4e00\u7684\u77ac\u65f6\u6709\u5e8f\u8282\u70b9\u3002 \u5224\u65ad\u662f\u5426\u83b7\u53d6\u9501\u7684\u65b9\u5f0f\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5224\u65ad\u6709\u5e8f\u8282\u70b9\u4e2d\u5e8f\u53f7\u6700\u5c0f\u7684\u4e00\u4e2a\u3002\n\u5f53\u91ca\u653e\u9501\u7684\u65f6\u5019\uff0c\u53ea\u9700\u5c06\u8fd9\u4e2a\u77ac\u65f6\u8282\u70b9\u5220\u9664\u5373\u53ef\u3002\u540c\u65f6\uff0c\u5176\u53ef\u4ee5\u907f\u514d\u670d\u52a1\u5b95\u673a\u5bfc\u81f4\u7684\u9501\u65e0\u6cd5\u91ca\u653e\uff0c\u800c\u4ea7\u751f\u7684\u6b7b\u9501\u95ee\u9898\u3002\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528zookeeper\u7b2c\u4e09\u65b9\u5e93Curator\u5ba2\u6237\u7aef\uff0c\u8fd9\u4e2a\u5ba2\u6237\u7aef\u4e2d\u5c01\u88c5\u4e86\u4e00\u4e2a\u53ef\u91cd\u5165\u7684\u9501\u670d\u52a1\u3002<\/p>\n<p>\u5b8c\u6574\u6d41\u7a0b<\/p>\n<pre><code>public void test() {\n    \/\/Curator\u63d0\u4f9b\u7684InterProcessMutex\u662f\u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\u3002\u901a\u8fc7acquire\u83b7\u5f97\u9501\uff0c\u5e76\u63d0\u4f9b\u8d85\u65f6\u673a\u5236\uff0crelease\u65b9\u6cd5\u7528\u4e8e\u91ca\u653e\u9501\u3002\n    InterProcessMutex lock = new InterProcessMutex(client, ZK_LOCK_PATH);\n    try {\n        \/\/\u83b7\u53d6\u9501\n        if (lock.acquire(10 * 1000, TimeUnit.SECONDS)) {\n            \/\/TODO \u4e1a\u52a1\u5904\u7406\n        }\n    } catch (Exception e) {\n        e.printStackTrace();\n    } finally {\n        try {\n            \/\/\u91ca\u653e\u9501\n            lock.release();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n}\n<\/code><\/pre>\n<p>\u539f\u6587\uff1a<a href=\"https:\/\/juejin.cn\/post\/6844903863363829767\">https:\/\/juejin.cn\/post\/6844903863363829767<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5404\u7cfb\u7edf\u540c\u6b65\u8bbf\u95ee\u5171\u540c\u7684\u8d44\u6e90\u662f\u5f88\u5e38\u89c1\u7684\u3002\u56e0\u6b64\u6211\u4eec\u5e38\u5e38\u9700\u8981\u534f\u8c03\u4ed6\u4eec\u7684\u52a8\u4f5c\u3002 \u5982\u679c\u4e0d\u540c\u7684\u7cfb\u7edf\u6216\u662f [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/10032"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10032"}],"version-history":[{"count":1,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/10032\/revisions"}],"predecessor-version":[{"id":10038,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/10032\/revisions\/10038"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}