{"id":194291,"date":"2024-11-13T05:26:18","date_gmt":"2024-11-12T21:26:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194291\/"},"modified":"2024-11-13T05:26:19","modified_gmt":"2024-11-12T21:26:19","slug":"%e5%84%84%e7%b4%9a%e6%b5%81%e9%87%8f%e4%b8%8b%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88%ef%bc%81%e5%a4%aa%e5%a5%bd%e7%94%a8%e4%ba%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194291\/","title":{"rendered":"\u5104\u7d1a\u6d41\u91cf\u4e0b\u7684\u5206\u5e03\u5f0f\u9396\u512a\u5316\u65b9\u6848\uff01\u592a\u597d\u7528\u4e86"},"content":{"rendered":"<h1 id=\"%e5%84%84%e7%b4%9a%e6%b5%81%e9%87%8f%e4%b8%8b%e7%9a%84%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88%ef%bc%81%e5%a4%aa%e5%a5%bd%e7%94%a8%e4%ba%86-BgIykDGWET\">\u5104\u7d1a\u6d41\u91cf\u4e0b\u7684\u5206\u5e03\u5f0f\u9396\u512a\u5316\u65b9\u6848\uff01\u592a\u597d\u7528\u4e86<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u4e92\u806f\u7db2\u74b0\u5883\u4e2d\uff0c\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u6fc0\u589e\u548c\u6578\u64da\u6d41\u91cf\u7684\u66b4\u589e\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u5354\u8abf\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u8cc7\u6e90\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u6311\u6230\u3002\u7279\u5225\u662f\u5728\u5104\u7d1a\u6d41\u91cf\u7684\u5834\u666f\u4e0b\uff0c\u5206\u5e03\u5f0f\u9396\u7684\u512a\u5316\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5b58\u5728\u7684\u554f\u984c\u4ee5\u53ca\u4e00\u4e9b\u512a\u5316\u65b9\u6848\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9ad8\u6d41\u91cf\u74b0\u5883\u4e2d\u66f4\u597d\u5730\u61c9\u5c0d\u6311\u6230\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%9f-BgIykDGWET\">\u4ec0\u9ebc\u662f\u5206\u5e03\u5f0f\u9396\uff1f<\/h2>\n<p>\u5206\u5e03\u5f0f\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u591a\u500b\u5be6\u4f8b\u4e4b\u9593\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u7684\u4e3b\u8981\u76ee\u7684\u662f\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002\u5728\u4e00\u500b\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7576\u591a\u500b\u5be6\u4f8b\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u5206\u5e03\u5f0f\u9396\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u80fd\u5920\u7372\u5f97\u9396\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u640d\u58de\u3002<\/p>\n<h2 id=\"%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e6%8c%91%e6%88%b0-BgIykDGWET\">\u5206\u5e03\u5f0f\u9396\u7684\u6311\u6230<\/h2>\n<p>\u5118\u7ba1\u5206\u5e03\u5f0f\u9396\u5728\u8cc7\u6e90\u7ba1\u7406\u4e2d\u8d77\u5230\u4e86\u91cd\u8981\u4f5c\u7528\uff0c\u4f46\u5728\u9ad8\u6d41\u91cf\u7684\u60c5\u6cc1\u4e0b\uff0c\u5b83\u5011\u4e5f\u9762\u81e8\u8457\u4e00\u4e9b\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u74f6\u9838\uff1a<\/strong>\u7576\u9396\u7684\u7af6\u722d\u6fc0\u70c8\u6642\uff0c\u8acb\u6c42\u53ef\u80fd\u6703\u88ab\u963b\u585e\uff0c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li><strong>\u6b7b\u9396\u554f\u984c\uff1a<\/strong>\u5982\u679c\u9396\u7684\u7ba1\u7406\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b7b\u9396\uff0c\u9032\u800c\u5f71\u97ff\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u9396\u7684\u904e\u671f\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u9396\u53ef\u80fd\u6703\u56e0\u70ba\u8d85\u6642\u800c\u81ea\u52d5\u91cb\u653e\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88-BgIykDGWET\">\u5206\u5e03\u5f0f\u9396\u7684\u512a\u5316\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u61c9\u5c0d\u4e0a\u8ff0\u6311\u6230\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u512a\u5316\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%ab%98%e6%95%88%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-BgIykDGWET\">1. \u4f7f\u7528\u9ad8\u6548\u7684\u9396\u5be6\u73fe<\/h3>\n<p>\u9078\u64c7\u5408\u9069\u7684\u9396\u5be6\u73fe\u662f\u512a\u5316\u7684\u7b2c\u4e00\u6b65\u3002Redis\u662f\u76ee\u524d\u6700\u6d41\u884c\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u4e4b\u4e00\uff0c\u56e0\u70ba\u5b83\u5177\u6709\u9ad8\u6027\u80fd\u548c\u4f4e\u5ef6\u9072\u7684\u7279\u6027\u3002\u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9396\u7684\u7372\u53d6\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u503c\u70ba1\uff0c\u5247\u8868\u793a\u9396\u7372\u53d6\u6210\u529f\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u5be6\u4f8b\u7372\u53d6\u3002<\/p>\n<h3 id=\"2-%e9%8e%96%e7%9a%84%e8%87%aa%e5%8b%95%e9%87%8b%e6%94%be-BgIykDGWET\">2. \u9396\u7684\u81ea\u52d5\u91cb\u653e<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u9396\u7684\u904e\u671f\u554f\u984c\uff0c\u53ef\u4ee5\u5728\u7372\u53d6\u9396\u6642\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u9396\u7684\u6301\u6709\u8005\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684EXPIRE\u547d\u4ee4\u4f86\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>EXPIRE lock_key 30\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6-BgIykDGWET\">3. \u4f7f\u7528\u91cd\u8a66\u6a5f\u5236<\/h3>\n<p>\u5728\u9ad8\u6d41\u91cf\u7684\u60c5\u6cc1\u4e0b\uff0c\u9396\u7684\u7af6\u722d\u53ef\u80fd\u6703\u975e\u5e38\u6fc0\u70c8\u3002\u70ba\u4e86\u63d0\u9ad8\u9396\u7684\u7372\u53d6\u6210\u529f\u7387\uff0c\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u91cd\u8a66\u6a5f\u5236\u3002\u5728\u7372\u53d6\u9396\u5931\u6557\u5f8c\uff0c\u7b49\u5f85\u4e00\u6bb5\u96a8\u6a5f\u6642\u9593\u518d\u91cd\u8a66\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u9396\u7af6\u722d\u7684\u6982\u7387\u3002<\/p>\n<pre><code>while (true) {\n    if (tryAcquireLock()) {\n        break;\n    }\n    sleep(randomWaitTime());\n}\n<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e5%8f%af%e9%87%8d%e5%85%a5%e9%8e%96-BgIykDGWET\">4. \u4f7f\u7528\u53ef\u91cd\u5165\u9396<\/h3>\n<p>\u53ef\u91cd\u5165\u9396\u5141\u8a31\u540c\u4e00\u500b\u7dda\u7a0b\u591a\u6b21\u7372\u53d6\u540c\u4e00\u628a\u9396\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u6b7b\u9396\u7684\u60c5\u6cc1\u3002\u9019\u5728\u67d0\u4e9b\u8907\u96dc\u7684\u696d\u52d9\u908f\u8f2f\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-BgIykDGWET\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u5104\u7d1a\u6d41\u91cf\u7684\u74b0\u5883\u4e0b\uff0c\u5206\u5e03\u5f0f\u9396\u7684\u512a\u5316\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u9078\u64c7\u9ad8\u6548\u7684\u9396\u5be6\u73fe\u3001\u8a2d\u7f6e\u9396\u7684\u81ea\u52d5\u91cb\u653e\u3001\u5be6\u73fe\u91cd\u8a66\u6a5f\u5236\u4ee5\u53ca\u4f7f\u7528\u53ef\u91cd\u5165\u9396\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u61c9\u5c0d\u9ad8\u6d41\u91cf\u5e36\u4f86\u7684\u6311\u6230\u3002\u9019\u4e9b\u512a\u5316\u65b9\u6848\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u589e\u5f37\u7cfb\u7d71\u7684\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5104\u7d1a\u6d41\u91cf\u4e0b\u7684\u5206\u5e03\u5f0f\u9396\u512a\u5316\u65b9\u6848\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u8b93\u4f60\u7684\u61c9\u7528\u904b\u884c\u66f4\u6d41\u66a2\uff0c\u6548\u679c\u9a5a\u4eba\uff01<\/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-194291","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194291","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=194291"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194291\/revisions"}],"predecessor-version":[{"id":194292,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194291\/revisions\/194292"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}