{"id":2139,"date":"2018-11-04T01:17:27","date_gmt":"2018-11-03T17:17:27","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=2139"},"modified":"2018-11-04T01:17:27","modified_gmt":"2018-11-03T17:17:27","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e6%96%b9%e6%a1%88%e8%ae%ba%e8%af%81%e4%b8%8e%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/2139","title":{"rendered":"\u5206\u5e03\u5f0f\u9501\u65b9\u6848\u8bba\u8bc1\u4e0e\u5b9e\u73b0\u00a0"},"content":{"rendered":"<div class=\"extra ui horizontal list meta-wrap\">\n<div class=\"item\"><\/div>\n<\/div>\n<h2 class=\"tags\">\u6982\u8ff0<\/h2>\n<div id=\"articleContent\" class=\"content\">\n<p>\u6211\u4eec\u5728\u5b9e\u9645\u7684\u63a5\u53e3\u6216\u8005\u4e1a\u52a1\u5f00\u53d1\u4e2d\uff0c\u4e0d\u7ba1\u662f\u670d\u52a1\u5668\u5355\u70b9\u8fd8\u662f\u670d\u52a1\u5668\u96c6\u7fa4\uff0c\u90fd\u4f1a\u6709\u5206\u5e03\u5f0f\u9501\u7684\u4f7f\u7528\u573a\u666f\u3002 \u6bd4\u5982\u6700\u5e38\u89c1\u7684\u63a5\u53e3\u91cd\u590d\u63d0\u4ea4\uff08\u4e1a\u52a1\u91cd\u590d\u5904\u7406\uff09\u3001\u5546\u54c1\u8d85\u5356\u7b49\u95ee\u9898\uff0c\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u5c31\u662f\u672c\u6587\u6240\u4f7f\u7528\u7684\u201c\u5206\u5e03\u5f0f\u9501\u201d\uff0c \u5728\u540c\u4e00\u4e2a\u4e1a\u52a1\u4e2d\uff0c\u5176\u4e2d\u4e00\u4e2a\u8bf7\u6c42\u83b7\u53d6\u5230\u9501\u4e4b\u540e\uff0c\u5176\u4ed6\u8bf7\u6c42\u53ea\u6709\u5728\u83b7\u53d6\u5230\u9501\u7684\u8bf7\u6c42\u91ca\u653e\u9501\uff08\u6216\u8005\u9501\u5931\u6548\uff09\u4e4b\u540e\u624d\u80fd\u7ee7\u7eed\u201c\u4e89\u62a2\u201d\u9501\uff0c \u6ca1\u6709\u83b7\u5f97\u9501\u7684\u8bf7\u6c42\u662f\u6ca1\u6709\u6267\u884c\u4e1a\u52a1\u7684\u6743\u9650\u7684\u3002<\/p>\n<p><span id=\"OSC_h2_2\"><\/span><\/p>\n<h2 id=\"h2_2\">\u65b9\u6848\u8bba\u8bc1<\/h2>\n<p>\u8fd9\u91cc\u6211\u4eec\u4e3b\u8981\u8ba8\u8bba\u4e24\u79cd\u65b9\u6848\uff1a\u57fa\u4e8eredis\u7684\u5206\u5e03\u5f0f\u9501\u548c\u57fa\u4e8ezookeeper\u7684\u5206\u5e03\u5f0f\u9501<\/p>\n<p>\u57fa\u4e8eredis\u7684\u5206\u5e03\u5f0f\u9501<\/p>\n<p>redis\u81ea\u8eab\u5c31\u63d0\u4f9b\u4e86\u547d\u4ee4\uff1aSET key value NX PX expireTimeMs\uff0c\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u5206\u5e03\u5f0f\u9501\u7684\u573a\u666f\uff0c\u6548\u7387\u9ad8\u4e14\u63d0\u4f9b\u9501\u5931\u6548\u673a\u5236\uff0c \u5373\u4f7f\u7531\u4e8e\u67d0\u79cd\u60c5\u51b5\u5ba2\u6237\u7aef\u6ca1\u6709\u53d1\u9001\u89e3\u9501\u8bf7\u6c42\uff0c\u4e5f\u4e0d\u4f1a\u9020\u6210\u6b7b\u9501\u3002<\/p>\n<p>\u4f46\u662f\u5982\u679credis\u8dd1\u5728\u96c6\u7fa4\u7684\u60c5\u51b5\u4e0b\uff0c\u7531\u4e8eredis\u96c6\u7fa4\u4e4b\u95f4\u91c7\u7528\u5f02\u6b65\u7684\u65b9\u5f0f\u8fdb\u884c\u6570\u636e\u540c\u6b65\uff0c\u56e0\u6b64\u5728\u5e76\u53d1\u91cf\u5927\u7684\u60c5\u51b5\u4e0b\u6709\u53ef\u80fd\u9047\u5230\u6570\u636e\u540c\u6b65\u4e0d\u53ca\u65f6\u9020\u6210\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u83b7\u53d6\u5230\u9501\uff0c \u867d\u7136\u4e1a\u754c\u6709redlock\u7b97\u6cd5\u4ee5\u53caredisson\u5ba2\u6237\u7aef\u5b9e\u73b0\u80fd\u57fa\u672c\u5904\u7406\u6b64\u7c7b\u95ee\u9898\uff0c\u4e5f\u5e76\u4e0d\u80fd\u5b8c\u7f8e\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5176\u7b97\u6cd5\u903b\u8f91\u5b9e\u73b0\u8fd8\u5f88\u590d\u6742\uff0c \u66f4\u6709\u751a\u8005\u6709\u5206\u5e03\u5f0f\u7684\u4e13\u5bb6Martin\u5199\u4e86\u4e00\u7bc7\u6587\u7ae0<a href=\"https:\/\/martin.kleppmann.com\/2016\/02\/08\/how-to-do-distributed-locking.html\" rel=\"nofollow\">\u300aHow to do distributed locking\u300b<\/a>, \u8d28\u7591redlock\u7684\u6b63\u786e\u6027\u3002Martin\u6700\u540e\u5bf9redlock\u7b97\u6cd5\u7684\u5f62\u5bb9\u662f\uff1a neither fish nor fowl \uff08\u975e\u9a74\u975e\u9a6c\uff09\u3002 \u672c\u4eba\u89c9\u5f97\u8fd9\u7bc7\u6587\u7ae0\uff08<a href=\"http:\/\/www.sohu.com\/a\/128396689_487514\" rel=\"nofollow\">\u300a\u57fa\u4e8eRedis\u7684\u5206\u5e03\u5f0f\u9501\u771f\u7684\u5b89\u5168\u5417\uff1f\u300b<\/a>\uff09\uff0c\u5c31redis\u96c6\u7fa4\u5206\u5e03\u5f0f\u9501\u7684\u5b89\u5168\u95ee\u9898\u5c31\u8bb2\u5f97\u975e\u5e38\u597d\u3002<\/p>\n<p>\u7ed3\u8bba\uff1a<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u6027\u80fd\u597d<\/li>\n<li>\u7f3a\u70b9\uff1a\u5b58\u5728\u96c6\u7fa4\u6570\u636e\u540c\u6b65\u4e0d\u53ca\u65f6\u95ee\u9898\uff1b\u9501\u5931\u6548\u65f6\u95f4\u4e0d\u597d\u63a7\u5236<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u8981\u60f3\u4f7f\u7528redis\u5206\u5e03\u5f0f\u9501\uff0c\u6700\u597d\u4f7f\u7528redis\u5355\u70b9\u6a21\u5f0f\uff0c\u4f46\u662f\u6ca1\u6709\u4eba\u80fd\u4fdd\u8bc1redis\u5355\u70b9\u7684\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n<p>\u57fa\u4e8ezookeeper\u7684\u5206\u5e03\u5f0f\u9501<\/p>\n<p>zookeeper\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7684\uff0c\u5f00\u653e\u6e90\u7801\u7684\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u534f\u8c03\u670d\u52a1\uff0c\u662f\u4e00\u4e2a\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u6027\u670d\u52a1\u7684\u8f6f\u4ef6\uff0c \u63d0\u4f9b\u7684\u529f\u80fd\u5305\u62ec\uff1a\u914d\u7f6e\u7ef4\u62a4\u3001\u57df\u540d\u670d\u52a1\u3001\u5206\u5e03\u5f0f\u540c\u6b65\u3001\u7ec4\u670d\u52a1\u7b49\u3002zookeeper\u673a\u5236\u89c4\u5b9a\u540c\u4e00\u4e2a\u8282\u70b9\u4e0b\u53ea\u80fd\u6709\u4e00\u4e2a\u552f\u4e00\u540d\u79f0\u7684\u8282\u70b9\uff0c zookeeper\u4e0a\u7684\u4e00\u4e2aznode\u770b\u4f5c\u662f\u4e00\u628a\u9501\uff0c\u6240\u6709\u5ba2\u6237\u7aef\u90fd\u53bbcreate\u540c\u4e00\u4e2aznode\uff0c\u6700\u7ec8\u6210\u529f\u521b\u5efa\u7684\u90a3\u4e2a\u5ba2\u6237\u7aef\u4e5f\u5373\u62e5\u6709\u4e86\u8fd9\u628a\u9501\u3002 zookeeper\u8282\u70b9\u6709\u4e24\u5927\u7c7b\u578b\uff1a\u6301\u4e45\u5316\u8282\u70b9\u548c\u4e34\u65f6\u8282\u70b9\uff0c\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u8282\u70b9\uff0c\u5f53\u6b64\u5ba2\u6237\u7aef\u4e0ezookeeper server\u65ad\u5f00\u540e\uff0c\u8be5\u4e34\u65f6\u8282\u70b9\u4f1a\u81ea\u52a8\u5220\u9664\u3002 \u7531\u4e8ezookeeper\u672c\u8eab\u5c31\u5f3a\u4e00\u81f4\u6027\u7684\u5b9e\u73b0\u673a\u5236\uff0c\u56e0\u6b64\u4e0d\u5b58\u5728\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n<p>zookeeper\u63d0\u4f9b\u4e86\u539f\u751f\u7684API\u65b9\u5f0f\u64cd\u4f5czookeeper\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u539f\u751fAPI\u4f7f\u7528\u8d77\u6765\u5e76\u4e0d\u662f\u8ba9\u4eba\u5f88\u8212\u670d\uff0c\u4e8e\u662f\u51fa\u73b0\u4e86zkclient\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4ee5\u81f3\u5230\u540e\u6765\u51fa\u73b0\u4e86Curator\u6846\u67b6\uff0c Curator\u5bf9zkclient\u505a\u4e86\u8fdb\u4e00\u6b65\u7684\u5c01\u88c5\uff0c\u8ba9\u4eba\u4f7f\u7528zookeeper\u66f4\u52a0\u65b9\u4fbf\u3002\u6709\u4e00\u53e5\u8bdd\uff0cGuava is to JAVA what Curator is to Zookeeper\u3002 Curator\u5b9e\u73b0zookeeper\u5206\u5e03\u5f0f\u9501\u7684\u57fa\u672c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5728zookeeper\u6307\u5b9a\u8282\u70b9\uff08${serviceLockName}\uff09\u4e0b\u521b\u5efa\u4e34\u65f6\u987a\u5e8f\u8282\u70b9node_n<\/li>\n<li>\u83b7\u53d6${serviceLockName}\u4e0b\u6240\u6709\u5b50\u8282\u70b9children<\/li>\n<li>\u5bf9\u5b50\u8282\u70b9\u6309\u8282\u70b9\u81ea\u589e\u5e8f\u53f7\u4ece\u5c0f\u5230\u5927\u6392\u5e8f\uff0c\u5224\u65ad\u672c\u8282\u70b9\u662f\u4e0d\u662f\u7b2c\u4e00\u4e2a\u5b50\u8282\u70b9<\/li>\n<li>\u82e5\u662f\uff0c\u5219\u83b7\u53d6\u9501\uff1b\u82e5\u4e0d\u662f\uff0c\u5219\u76d1\u542c\u6bd4\u8be5\u8282\u70b9\u5c0f\u7684\u90a3\u4e2a\u8282\u70b9\u7684\u5220\u9664\u4e8b\u4ef6<\/li>\n<li>\u82e5\u76d1\u542c\u4e8b\u4ef6\u751f\u6548\uff0c\u5219\u56de\u5230\u7b2c\u4e8c\u6b65\u91cd\u65b0\u8fdb\u884c\u5224\u65ad\uff0c\u76f4\u5230\u83b7\u53d6\u5230\u9501<\/li>\n<li>\u82e5\u8d85\u8fc7\u7b49\u5f85\u65f6\u95f4\uff0c\u5219\u83b7\u53d6\u9501\u5931\u8d25<\/li>\n<\/ul>\n<p>\u5c31\u4e0a\u9762\u7684Curator\u5bf9\u5206\u5e03\u5f0f\u9501\u5b9e\u73b0\u7684\u7b97\u6cd5\u8fd8\u662f\u633a\u590d\u6742\u7684\uff0c\u6548\u7387\u4e5f\u4e0d\u662f\u592a\u9ad8\uff0c\u56e0\u4e3a\u521b\u5efa\u8282\u70b9\u3001\u83b7\u53d6\u6240\u6709\u5b50\u8282\u70b9\u5e76\u6392\u5e8f\u7b49\u64cd\u4f5c\u6d89\u53ca\u5230\u591a\u4e2a\u7f51\u7edcIO\u4ee5\u53ca\u4ee3\u7801\u903b\u8f91\u5904\u7406\uff0c\u6240\u4ee5\u6548\u7387\u4e0a\u4f1a\u6253\u6298\u6263\uff0c \u8fd8\u6709\u91ca\u653e\u9501\u7684\u65f6\u5019\u53ea\u4f1a\u5220\u9664children\u8282\u70b9\uff0c\u5e76\u4e0d\u4f1a\u5220\u9664${serviceLockName}\u8282\u70b9\uff0c\u56e0\u6b64zookeeper server\u4e2d\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\u5927\u91cf\u7684${serviceLockName}\u8282\u70b9\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u548cWatcher\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u672c\u4eba\u89c9\u5f97Curator\u6709\u4e9b\u8fc7\u4e8e\u590d\u6742\u4e86\uff0c\u53ef\u4ee5\u76f4\u63a5\u5229\u7528zookeeper\u7684\u7279\u6027\uff08\u4e00\u4e2a\u8282\u70b9\u4e0b\u53ea\u80fd\u6709\u4e00\u4e2a\u552f\u4e00\u540d\u79f0\u7684\u8282\u70b9\uff0c\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u8282\u70b9\uff0c\u5f53\u6b64\u5ba2\u6237\u7aef\u4e0ezookeeper server\u65ad\u5f00\u540e\uff0c\u8be5\u4e34\u65f6\u8282\u70b9\u4f1a\u81ea\u52a8\u5220\u9664\uff09\uff0c \u91cd\u590d\u521b\u5efa\u5b50\u8282\u70b9\u4f1a\u629b\u51faKeeperException.NodeExistsException\uff08\u8282\u70b9\u5df2\u5b58\u5728\u5f02\u5e38\uff09\u6765\u5b9e\u73b0zookeeper\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n<p>\u7ed3\u8bba\uff1a<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u4e0d\u5b58\u5728\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\uff1b\u6709\u6548\u7684\u89e3\u51b3\u5355\u70b9\u95ee\u9898\uff1b\u9501\u6709\u6548\u65f6\u95f4\u63a7\u5236\u7075\u6d3b<\/li>\n<li>\u7f3a\u70b9\uff1a\u6027\u80fd\u7a0d\u5dee\uff0c\u56e0\u4e3a\u6bcf\u6b21\u5728\u521b\u5efa\u9501\u548c\u91ca\u653e\u9501\u7684\u8fc7\u7a0b\u4e2d\uff0c\u90fd\u8981\u52a8\u6001\u521b\u5efa\u3001\u9500\u6bc1\u4e34\u65f6\u8282\u70b9\u6765\u5b9e\u73b0\u9501\u529f\u80fd\u3002\u5e76\u4e14\u521b\u5efa\u548c\u5220\u9664\u8282\u70b9\u53ea\u80fd\u901a\u8fc7Leader\u670d\u52a1\u5668\u6765\u6267\u884c\uff0c\u7136\u540e\u5c06\u6570\u636e\u540c\u6b65\u5230\u5176\u4ed6\u673a\u5668\u4e0a\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u672c\u6587\u5f3a\u70c8\u63a8\u8350\u4f7f\u7528zookeeper\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u4f46\u662f\u53c8\u4f1a\u591a\u5f15\u5165\u7ec4\u4ef6\uff0c\u4e3a\u9879\u76ee\u589e\u52a0\u4e86\u98ce\u9669\u3002<\/p>\n<p><span id=\"OSC_h2_3\"><\/span><\/p>\n<h2 id=\"h2_3\">\u9879\u76ee\u6e90\u7801<\/h2>\n<p>\u672c\u9879\u76ee\u4ee3\u7801\u5df2\u7ecf\u6258\u7ba1\u5230github\u4e0e\u7801\u4e91\u4e0a\uff1a<br \/>\ngithub \uff1a<a href=\"https:\/\/github.com\/DSLZC\/distributelock-spring-boot-starter\" target=\"_blank\" rel=\"nofollow noopener\">distributelock-spring-boot-starter<\/a><br \/>\n\u7801\u4e91\uff1a<a href=\"https:\/\/gitee.com\/DSLZC\/distributelock-spring-boot-starter\" target=\"_blank\" rel=\"nofollow noopener\">distributelock-spring-boot-starter<\/a><\/p>\n<p><span id=\"OSC_h2_4\"><\/span><\/p>\n<h2 id=\"h2_4\">\u4f7f\u7528\u65b9\u6cd5<\/h2>\n<ol>\n<li>\u5206\u5e03\u5f0f\u9501starter jar\u5305\u5f15\u7528<\/li>\n<\/ol>\n<pre><code class=\"hljs xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n   <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>cn.dslcode<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>\r\n   <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>distributelock-spring-boot-starter<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>\r\n   <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">version<\/span>&gt;<\/span>1.0.0<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">version<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>spring-data-redis\u6216zookeeper\u7684jar\u5305\u5f15\u7528\uff0c\u4f7f\u7528redis\u7684\u8bdd\u9700\u8981\u4f9d\u8d56RedisTemplate<\/li>\n<\/ol>\n<pre><code class=\"hljs xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>org.springframework.boot<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>spring-boot-starter-data-redis<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u6216<\/p>\n<pre><code class=\"hljs xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>org.apache.zookeeper<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>zookeeper<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">version<\/span>&gt;<\/span>${zookeeper.version}<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">version<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">exclusions<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">exclusion<\/span>&gt;<\/span>\r\n            <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>org.slf4j<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>\r\n            <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>slf4j-log4j12<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">exclusion<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">exclusion<\/span>&gt;<\/span>\r\n            <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>log4j<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">groupId<\/span>&gt;<\/span>\r\n            <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>log4j<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">artifactId<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">exclusion<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">exclusions<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">dependency<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>\u914d\u7f6e\u53c2\u6570<\/li>\n<\/ol>\n<pre><code class=\"hljs shell\"><span class=\"hljs-meta\">#<\/span><span class=\"bash\"> \u5206\u5e03\u5f0f\u9501\u65b9\u5f0f\uff1aredis\u6216zookeeper<\/span>\r\n<span class=\"hljs-meta\">#<\/span><span class=\"bash\">distributelock.type=redis<\/span>\r\ndistributelock.type=zookeeper\r\n<span class=\"hljs-meta\">#<\/span><span class=\"bash\"> \u4f7f\u7528redis\u5206\u5e03\u5f0f\u9501\uff0c\u914d\u7f6eredis\u8fde\u63a5<\/span>\r\n<span class=\"hljs-meta\">#<\/span><span class=\"bash\"> spring.redis.host=127.0.0.1<\/span>\r\n<span class=\"hljs-meta\">#<\/span><span class=\"bash\"> spring.redis.port=6379<\/span>\r\n<span class=\"hljs-meta\">#<\/span><span class=\"bash\"> \u4f7f\u7528zookeeper\u5206\u5e03\u5f0f\u9501\uff0c\u914d\u7f6ezookeeper\u8fde\u63a5<\/span>\r\ndistributelock.zookeeper.connect-string=127.0.0.1:2181,127.0.0.1:2182,127.0.0.1:2183\r\n<\/code><\/pre>\n<ol>\n<li>\u5728\u9700\u8981\u8fdb\u884c\u5206\u5e03\u5f0f\u9501\u63a7\u5236\u7684\u65b9\u6cd5\u6dfb\u52a0@Lockable\u6ce8\u89e3\uff0c\u6ce8\u89e3\u5b57\u6bb5\u5982\u4e0b<\/li>\n<\/ol>\n<pre><code class=\"hljs cs\"><span class=\"hljs-keyword\">public<\/span> @<span class=\"hljs-keyword\">interface<\/span> <span class=\"hljs-title\">Lockable<\/span> {\r\n\r\n    <span class=\"hljs-comment\">\/** lock key\u524d\u7f00\uff0c\u6bcf\u4e00\u4e2a\u4e1a\u52a1\u4e00\u4e2akey *\/<\/span>\r\n    <span class=\"hljs-function\">String <span class=\"hljs-title\">key<\/span>()<\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/** \u7b49\u5f85\u65f6\u95f4\/\u6beb\u79d2 *\/<\/span>\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">waitTimeMs<\/span>() <span class=\"hljs-keyword\">default<\/span> 0<\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/** \u9501\u8fc7\u671f\u65f6\u95f4\/\u6beb\u79d2\uff0c\u53ea\u5bf9redis\u6709\u6548 *\/<\/span>\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">timeoutMs<\/span>() <span class=\"hljs-keyword\">default<\/span> 5000<\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/**\r\n     * \u65b9\u6cd5\u53c2\u6570field\u540d\u79f0\uff0c\u652f\u6301\u591a\u7ea7\uff0c\u5982\uff1a\u65b9\u6cd5\u53c2\u6570\u540d \u6216 \u65b9\u6cd5\u53c2\u6570\u540d.\u5bf9\u8c61\u540d.\u5bf9\u8c61\u540d\u3002\r\n     * \u5229\u7528\u53cd\u5c04\u53d6\u503c\uff0c\u7528\u4e8e\u548ckey\u7ec4\u5408\u8d77\u6765\u7ec4\u6210\u65b0\u7684lockKey\r\n     *\/<\/span>\r\n    <span class=\"hljs-function\">String[] <span class=\"hljs-title\">fields<\/span>() <span class=\"hljs-keyword\">default<\/span> <\/span>{};\r\n\r\n    <span class=\"hljs-comment\">\/** \u83b7\u53d6\u9501\u5931\u8d25\u63d0\u793a\u6d88\u606f\uff0c\u53ef\u5c06\u6b64\u6d88\u606f\u629b\u51faRuntimeException\uff0c\u7136\u540e\u7528\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u5904\u7406 *\/<\/span>\r\n    <span class=\"hljs-function\">String <span class=\"hljs-title\">failMsg<\/span>() <span class=\"hljs-keyword\">default<\/span> \"\u8bf7\u52ff\u91cd\u590d\u63d0\u4ea4|2101\"<\/span>;\r\n\r\n}\r\n<\/code><\/pre>\n<p><span id=\"OSC_h2_5\"><\/span><\/p>\n<h2 id=\"h2_5\">\u4f7f\u7528\u793a\u4f8b<\/h2>\n<ol>\n<li>\u4f7f\u7528\u6ce8\u89e3\u7684\u65b9\u5f0f\uff0cstarter\u5df2\u914d\u7f6eAOP\u81ea\u52a8\u62e6\u622a\u5e26\u6709\u8be5\u6ce8\u89e3\u7684\u65b9\u6cd5<\/li>\n<\/ol>\n<pre><code class=\"hljs java\"><span class=\"hljs-meta\">@PostMapping<\/span>(<span class=\"hljs-string\">\"createOrder\"<\/span>)\r\n<span class=\"hljs-meta\">@Lockable<\/span>(key = <span class=\"hljs-string\">\"order.addOder\"<\/span>, waitTimeMs = <span class=\"hljs-number\">5000<\/span>, timeoutMs = <span class=\"hljs-number\">5000<\/span>, fields = {<span class=\"hljs-string\">\"product.id\"<\/span>, <span class=\"hljs-string\">\"token\"<\/span>})\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> RestResponse <span class=\"hljs-title\">createOrder<\/span><span class=\"hljs-params\">(@RequestBody Product product, @RequestParam(name = <span class=\"hljs-string\">\"token\"<\/span>)<\/span> String token) <\/span>{\r\n    <span class=\"hljs-comment\">\/\/ TODO createOrder<\/span>\r\n    <span class=\"hljs-keyword\">return<\/span> RestResponse.success();\r\n}\r\n\r\n<span class=\"hljs-meta\">@Transactional<\/span>\r\n<span class=\"hljs-meta\">@Lockable<\/span>(key = <span class=\"hljs-string\">\"product.minusStock\"<\/span>, waitTimeMs = <span class=\"hljs-number\">5000<\/span>, timeoutMs = <span class=\"hljs-number\">5000<\/span>, fields = <span class=\"hljs-string\">\"product.id\"<\/span>)\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">minusStock<\/span><span class=\"hljs-params\">(Product product)<\/span> <\/span>{\r\n    <span class=\"hljs-comment\">\/\/ TODO \u5546\u54c1\u6263\u51cf\u5e93\u5b58<\/span>\r\n\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u4e0d\u4f7f\u7528\u6ce8\u89e3\uff0c\u76f4\u63a5\u4f7f\u7528DistributeLock.tryLock\u548cDistributeLock.releaseLock\u65b9\u6cd5\u3002\u6ce8\u610f\u91ca\u653e\u9501\u4ee3\u7801\u5fc5\u987b\u8981\u5728\u83b7\u5f97\u9501\u7684\u60c5\u51b5\u4e0b\u624d\u80fd\u6267\u884c\uff0c\u5e76\u4e14\u9700\u8981\u7528try finally\uff0c\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n<pre><code class=\"hljs java\"><span class=\"hljs-meta\">@Transactional<\/span>\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">minusStock<\/span><span class=\"hljs-params\">(Product product)<\/span> <\/span>{\r\n   <span class=\"hljs-comment\">\/\/ TODO \u5546\u54c1\u6263\u51cf\u5e93\u5b58<\/span>\r\n   String lockValue = UUID.randomUUID().toString();\r\n   <span class=\"hljs-keyword\">boolean<\/span> getLock = <span class=\"hljs-keyword\">false<\/span>;\r\n   <span class=\"hljs-keyword\">try<\/span> {\r\n       <span class=\"hljs-keyword\">if<\/span> (getLock = distributeLock.tryLock(lockKey, lockValue, waitTimeMs, timeoutMs)) {\r\n           <span class=\"hljs-comment\">\/\/ TODO \u83b7\u53d6\u9501\u6210\u529f\uff0c\u6267\u884c\u5546\u54c1\u6263\u51cf\u5e93\u5b58\u4e1a\u52a1\u903b\u8f91<\/span>\r\n\r\n       }\r\n       <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u6267\u884c\u5931\u8d25\u4e1a\u52a1\u903b\u8f91<\/span>\r\n       <span class=\"hljs-keyword\">if<\/span> (!getLock) {\r\n           <span class=\"hljs-keyword\">throw<\/span> <span class=\"hljs-keyword\">new<\/span> RuntimeException(<span class=\"hljs-string\">\"\u5f53\u524d\u64cd\u4f5c\u7528\u6237\u8fc7\u591a\uff0c\u8bf7\u7a0d\u540e\u91cd\u8bd5|2201\"<\/span>);\r\n       }\r\n   } <span class=\"hljs-keyword\">finally<\/span> {\r\n       <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u9501\u6210\u529f\u624d\u91ca\u653e\u9501<\/span>\r\n       <span class=\"hljs-keyword\">if<\/span> (getLock) {\r\n           distributeLock.releaseLock(lockKey, lockValue);\r\n       }\r\n   }\r\n}<\/code><\/pre>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8ff0 \u6211\u4eec\u5728\u5b9e\u9645\u7684\u63a5\u53e3\u6216\u8005\u4e1a\u52a1\u5f00\u53d1\u4e2d\uff0c\u4e0d<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-2139","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=2139"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2139\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=2139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=2139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=2139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}