{"id":156303,"date":"2024-11-02T20:09:20","date_gmt":"2024-11-02T12:09:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156303\/"},"modified":"2024-11-02T20:09:21","modified_gmt":"2024-11-02T12:09:21","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e4%b8%89%e7%a8%ae%e5%af%a6%e7%8f%be%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156303\/","title":{"rendered":"\u5206\u5e03\u5f0f\u9396\u7684\u4e09\u7a2e\u5be6\u73fe\uff01"},"content":{"rendered":"

\u5206\u5e03\u5f0f\u9396\u7684\u4e09\u7a2e\u5be6\u73fe<\/h1>\n

\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u70ba\u4e86\u9632\u6b62\u591a\u500b\u5be6\u4f8b\u540c\u6642\u4fee\u6539\u540c\u4e00\u8cc7\u6e90\uff0c\u5206\u5e03\u5f0f\u9396\u61c9\u904b\u800c\u751f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e09\u7a2e\u5e38\u898b\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u65b9\u5f0f\uff1a\u57fa\u65bc\u6578\u64da\u5eab\u7684\u9396\u3001\u57fa\u65bcRedis\u7684\u9396\u4ee5\u53ca\u57fa\u65bcZookeeper\u7684\u9396\u3002<\/p>\n

1. \u57fa\u65bc\u6578\u64da\u5eab\u7684\u9396<\/h2>\n

\u57fa\u65bc\u6578\u64da\u5eab\u7684\u9396\u662f\u6700\u7c21\u55ae\u7684\u5be6\u73fe\u65b9\u5f0f\u4e4b\u4e00\u3002\u9019\u7a2e\u65b9\u6cd5\u901a\u5e38\u4f7f\u7528\u6578\u64da\u5eab\u7684\u884c\u9396\u6216\u8868\u9396\u4f86\u5be6\u73fe\u3002\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5411\u6578\u64da\u5eab\u767c\u9001\u4e00\u500b\u8acb\u6c42\uff0c\u4e26\u5617\u8a66\u66f4\u65b0\u4e00\u500b\u7279\u5b9a\u7684\u9396\u8868\u3002<\/p>\n

CREATE TABLE locks (\n    lock_name VARCHAR(255) PRIMARY KEY,\n    is_locked BOOLEAN NOT NULL DEFAULT FALSE\n);\n<\/code><\/pre>\n
\u7576\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u53ef\u4ee5\u57f7\u884c\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n
UPDATE locks SET is_locked = TRUE WHERE lock_name = 'my_lock' AND is_locked = FALSE;\n<\/code><\/pre>\n
\u5982\u679c\u66f4\u65b0\u6210\u529f\uff0c\u5247\u8868\u793a\u9396\u5df2\u7372\u53d6\uff1b\u5982\u679c\u6c92\u6709\u884c\u88ab\u66f4\u65b0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u662f\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u7f3a\u9ede\u662f\u6027\u80fd\u8f03\u4f4e\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u5eab\u7684\u9396\u6703\u6210\u70ba\u74f6\u9838\u3002<\/p>\n
2. \u57fa\u65bcRedis\u7684\u9396<\/h2>\n
Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u7528\u65bc\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\u3002Redis\u7684SETNX\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u6709\u6548\u907f\u514d\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n
SETNX my_lock unique_lock_value\n<\/code><\/pre>\n
\u5982\u679c\u8fd4\u56de\u503c\u70ba1\uff0c\u5247\u8868\u793a\u9396\u5df2\u6210\u529f\u7372\u53d6\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u3002\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u901a\u5e38\u6703\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff1a<\/p>\n
SET my_lock unique_lock_value EX 10 NX\n<\/code><\/pre>\n
\u9019\u6a23\uff0c\u5373\u4f7f\u7372\u53d6\u9396\u7684\u9032\u7a0b\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u572810\u79d2\u5f8c\u81ea\u52d5\u91cb\u653e\u3002Redis\u7684\u512a\u52e2\u5728\u65bc\u5176\u9ad8\u6027\u80fd\u548c\u7c21\u55ae\u7684API\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cRedis\u672c\u8eab\u4e26\u4e0d\u652f\u6301\u5206\u5e03\u5f0f\u4e8b\u52d9\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u6642\u9700\u8981\u8b39\u614e\u8003\u616e\u3002<\/p>\n
3. \u57fa\u65bcZookeeper\u7684\u9396<\/h2>\n
Zookeeper\u662f\u4e00\u500b\u5c08\u9580\u70ba\u5206\u5e03\u5f0f\u7cfb\u7d71\u8a2d\u8a08\u7684\u5354\u8abf\u670d\u52d9\uff0c\u63d0\u4f9b\u4e86\u5f37\u4e00\u81f4\u6027\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u3002Zookeeper\u4f7f\u7528\u81e8\u6642\u7bc0\u9ede\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/p>\n
\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5728Zookeeper\u4e2d\u5275\u5efa\u4e00\u500b\u81e8\u6642\u7bc0\u9ede\uff1a<\/p>\n
String lockNode = zooKeeper.create(\"\/locks\/my_lock\", data, \n    ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL);\n<\/code><\/pre>\n
\u7136\u5f8c\uff0c\u9032\u7a0b\u6703\u6aa2\u67e5\u5176\u4ed6\u9396\u7bc0\u9ede\u7684\u9806\u5e8f\uff0c\u53ea\u6709\u6700\u5c0f\u7684\u7bc0\u9ede\u624d\u80fd\u7372\u53d6\u9396\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u52e2\u5728\u65bcZookeeper\u63d0\u4f9b\u4e86\u5f37\u4e00\u81f4\u6027\u548c\u9ad8\u53ef\u7528\u6027\uff0c\u4f46\u76f8\u5c0d\u65bc\u5176\u4ed6\u65b9\u6cd5\uff0c\u5be6\u73fe\u8f03\u70ba\u8907\u96dc\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5206\u5e03\u5f0f\u9396\u662f\u78ba\u4fdd\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u6578\u64da\u4e00\u81f4\u6027\u7684\u91cd\u8981\u5de5\u5177\u3002\u672c\u6587\u4ecb\u7d39\u4e86\u4e09\u7a2e\u5e38\u898b\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u65b9\u5f0f\uff1a\u57fa\u65bc\u6578\u64da\u5eab\u7684\u9396\u3001\u57fa\u65bcRedis\u7684\u9396\u4ee5\u53ca\u57fa\u65bcZookeeper\u7684\u9396\u3002\u6bcf\u7a2e\u65b9\u6cd5\u90fd\u6709\u5176\u512a\u7f3a\u9ede\uff0c\u9078\u64c7\u5408\u9069\u7684\u5be6\u73fe\u65b9\u5f0f\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5206\u5e03\u5f0f\u9396\u7684\u4e09\u7a2e\u5be6\u73fe\u65b9\u5f0f\uff0c\u4e86\u89e3\u5176\u539f\u7406\u8207\u61c9\u7528\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u4e26\u767c\u63a7\u5236\u8207\u6578\u64da\u4e00\u81f4\u6027\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-156303","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156303","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=156303"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156303\/revisions"}],"predecessor-version":[{"id":156304,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156303\/revisions\/156304"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}