{"id":148413,"date":"2024-11-01T13:58:35","date_gmt":"2024-11-01T05:58:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/148413\/"},"modified":"2024-11-01T13:58:36","modified_gmt":"2024-11-01T05:58:36","slug":"zookeeper%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e8%88%8a%e7%89%88%e6%9c%ac%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-zookeeper%e8%ae%80%e8%88%8a%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/148413\/","title":{"rendered":"Zookeeper\u5982\u4f55\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u5eab\uff1f (zookeeper\u8b80\u820a\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"zookeeper%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e8%88%8a%e7%89%88%e6%9c%ac%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-zookeeper%e8%ae%80%e8%88%8a%e6%95%b8%e6%93%9a%e5%ba%ab-newEdSTKmq\">Zookeeper\u5982\u4f55\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u5eab\uff1f (zookeeper\u8b80\u820a\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u53ef\u7528\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Zookeeper\u4f5c\u70ba\u4e00\u500b\u958b\u6e90\u7684\u5206\u4f48\u5f0f\u5354\u8abf\u670d\u52d9\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5206\u4f48\u5f0f\u61c9\u7528\u4e2d\u3002\u5b83\u63d0\u4f9b\u4e86\u9ad8\u53ef\u7528\u6027\u548c\u4e00\u81f4\u6027\u7684\u6578\u64da\u5b58\u5132\uff0c\u4e26\u4e14\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7684\u914d\u7f6e\u3001\u547d\u540d\u3001\u540c\u6b65\u7b49\u554f\u984c\u3002\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u8b80\u53d6\u820a\u7248\u672c\u7684\u6578\u64da\u5eab\uff0c\u4ee5\u4fbf\u9032\u884c\u6578\u64da\u6062\u5fa9\u6216\u7248\u672c\u56de\u6efe\u3002\u672c\u6587\u5c07\u63a2\u8a0eZookeeper\u5982\u4f55\u8b80\u53d6\u820a\u7248\u672c\u7684\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"zookeeper%e7%9a%84%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b-newEdSTKmq\">Zookeeper\u7684\u6578\u64da\u6a21\u578b<\/h2>\n<p>Zookeeper\u7684\u6578\u64da\u6a21\u578b\u57fa\u65bc\u6a39\u5f62\u7d50\u69cb\uff0c\u6bcf\u500b\u7bc0\u9ede\u7a31\u70baZnode\u3002\u6bcf\u500bZnode\u53ef\u4ee5\u5b58\u5132\u6578\u64da\u548c\u5b50Znode\uff0c\u4e26\u4e14\u6bcf\u500bZnode\u90fd\u6709\u4e00\u500b\u7248\u672c\u865f\u3002\u7576Znode\u7684\u6578\u64da\u88ab\u4fee\u6539\u6642\uff0c\u7248\u672c\u865f\u6703\u81ea\u52d5\u589e\u52a0\u3002\u9019\u610f\u5473\u8457Zookeeper\u80fd\u5920\u8ffd\u8e64\u6bcf\u500bZnode\u7684\u6b77\u53f2\u7248\u672c\uff0c\u9019\u5c0d\u65bc\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u5eab\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e8%88%8a%e7%89%88%e6%9c%ac%e7%9a%84znode-newEdSTKmq\">\u5982\u4f55\u8b80\u53d6\u820a\u7248\u672c\u7684Znode<\/h2>\n<p>\u8981\u8b80\u53d6Zookeeper\u4e2d\u820a\u7248\u672c\u7684\u6578\u64da\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528Zookeeper\u7684API\u4f86\u7372\u53d6\u7279\u5b9a\u7248\u672c\u7684Znode\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u9023\u63a5\u5230Zookeeper\u670d\u52d9\u5668\uff1a<\/strong>\u9996\u5148\uff0c\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u9023\u63a5\u5230Zookeeper\u670d\u52d9\u5668\u3002\u9019\u53ef\u4ee5\u901a\u904eZookeeper\u7684Java API\u6216\u5176\u4ed6\u8a9e\u8a00\u7684API\u4f86\u5be6\u73fe\u3002<\/li>\n<li><strong>\u7372\u53d6Znode\u7684\u7248\u672c\u865f\uff1a<\/strong>\u5728\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u4e4b\u524d\uff0c\u958b\u767c\u8005\u9700\u8981\u77e5\u9053\u8981\u8b80\u53d6\u7684Znode\u7684\u7248\u672c\u865f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u8abf\u7528<code>getData<\/code>\u65b9\u6cd5\u4f86\u7372\u53d6\u7576\u524d\u7248\u672c\u865f\u3002<\/li>\n<li><strong>\u8b80\u53d6\u7279\u5b9a\u7248\u672c\u7684\u6578\u64da\uff1a<\/strong>\u4f7f\u7528<code>getData<\/code>\u65b9\u6cd5\u6642\uff0c\u53ef\u4ee5\u6307\u5b9a\u8981\u8b80\u53d6\u7684\u7248\u672c\u865f\u3002\u9019\u6a23\uff0cZookeeper\u5c07\u8fd4\u56de\u8a72\u7248\u672c\u7684\u6578\u64da\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-newEdSTKmq\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nimport org.apache.zookeeper.ZooKeeper;\nimport org.apache.zookeeper.data.Stat;\n\npublic class ZookeeperExample {\n    public static void main(String[] args) throws Exception {\n        ZooKeeper zk = new ZooKeeper(\"localhost:2181\", 3000, null);\n        \n        String path = \"\/exampleNode\";\n        Stat stat = new Stat();\n        \n        \/\/ \u7372\u53d6\u7576\u524d\u7248\u672c\u865f\n        byte[] data = zk.getData(path, false, stat);\n        int currentVersion = stat.getVersion();\n        \n        \/\/ \u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\n        int oldVersion = currentVersion - 1; \/\/ \u5047\u8a2d\u6211\u5011\u8981\u8b80\u53d6\u524d\u4e00\u7248\u672c\n        byte[] oldData = zk.getData(path, false, stat, oldVersion);\n        \n        System.out.println(\"\u820a\u7248\u672c\u6578\u64da: \" + new String(oldData));\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-newEdSTKmq\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u7248\u672c\u865f\u7bc4\u570d\uff1a<\/strong>\u78ba\u4fdd\u8981\u8b80\u53d6\u7684\u7248\u672c\u865f\u5728\u6709\u6548\u7bc4\u570d\u5167\u3002\u5982\u679c\u7248\u672c\u865f\u8d85\u51fa\u7bc4\u570d\uff0cZookeeper\u5c07\u8fd4\u56de\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0c\u6578\u64da\u7684\u4e00\u81f4\u6027\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u958b\u767c\u8005\u61c9\u8003\u616e\u4f7f\u7528\u9396\u6216\u5176\u4ed6\u540c\u6b65\u6a5f\u5236\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u983b\u7e41\u5730\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u53ef\u80fd\u6703\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\uff0c\u56e0\u6b64\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-newEdSTKmq\">\u7e3d\u7d50<\/h2>\n<p>Zookeeper\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u8b80\u53d6\u820a\u7248\u672c\u7684\u6578\u64da\u5eab\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u6062\u5fa9\u548c\u7248\u672c\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528Zookeeper\u7684API\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u7279\u5b9a\u7248\u672c\u7684Znode\u6578\u64da\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u6027\u80fd\u554f\u984c\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u904b\u884c\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u4f7f\u7528Zookeeper\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u9700\u8981\u9ad8\u6548\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Zookeeper\u5982\u4f55\u8b80\u53d6\u820a\u7248\u672c\u6578\u64da\u5eab\uff0c\u638c\u63e1\u6578\u64da\u6062\u5fa9\u8207\u7ba1\u7406\u6280\u5de7\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-148413","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/148413","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=148413"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/148413\/revisions"}],"predecessor-version":[{"id":148414,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/148413\/revisions\/148414"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=148413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=148413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=148413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}