{"id":129399,"date":"2024-10-26T21:19:59","date_gmt":"2024-10-26T13:19:59","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129399\/"},"modified":"2024-10-26T21:20:00","modified_gmt":"2024-10-26T13:20:00","slug":"redis%e9%8e%96%e8%aa%b0%e4%be%86%e8%a7%a3%e9%96%8b%ef%bc%88redis-%e9%8e%96%e4%b8%8d%e9%87%8b%e6%94%be%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129399\/","title":{"rendered":"Redis\u9396\u8ab0\u4f86\u89e3\u958b\uff08redis \u9396\u4e0d\u91cb\u653e\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%8e%96%e8%aa%b0%e4%be%86%e8%a7%a3%e9%96%8b%ef%bc%88redis-%e9%8e%96%e4%b8%8d%e9%87%8b%e6%94%be%ef%bc%89-cklIBgriQd\">Redis\u9396\u8ab0\u4f86\u89e3\u958b\uff08redis \u9396\u4e0d\u91cb\u653e\uff09<\/h1>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u4f7f\u7528\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u5c31\u662f\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u3002\u7136\u800c\uff0c\u7576\u9396\u672a\u80fd\u6b63\u78ba\u91cb\u653e\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7cfb\u7d71\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u51fa\u73fe\u6b7b\u9396\u7684\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u7684\u5de5\u4f5c\u539f\u7406\u3001\u5e38\u898b\u554f\u984c\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-cklIBgriQd\">Redis\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u5229\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u901a\u5e38\uff0c\u958b\u767c\u8005\u6703\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u5be6\u73fe\u9396\uff1a<\/p>\n<pre><code>SET lock_key unique_value NX PX 30000\n<\/code><\/pre>\n<ul>\n<li><strong>lock_key<\/strong>\uff1a\u9396\u7684\u9375\u540d\u3002<\/li>\n<li><strong>unique_value<\/strong>\uff1a\u4e00\u500b\u552f\u4e00\u7684\u503c\uff0c\u7528\u65bc\u6a19\u8b58\u9396\u7684\u64c1\u6709\u8005\u3002<\/li>\n<li><strong>NX<\/strong>\uff1a\u53ea\u6709\u7576\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u8a2d\u7f6e\u3002<\/li>\n<li><strong>PX 30000<\/strong>\uff1a\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u70ba30\u79d2\u3002<\/li>\n<\/ul>\n<p>\u9019\u6a23\uff0c\u7576\u4e00\u500b\u9032\u7a0b\u6210\u529f\u7372\u53d6\u9396\u5f8c\uff0c\u5176\u4ed6\u9032\u7a0b\u5c07\u7121\u6cd5\u7372\u53d6\u76f8\u540c\u7684\u9396\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e9%8e%96%e4%b8%8d%e9%87%8b%e6%94%be%e7%9a%84%e5%8e%9f%e5%9b%a0-cklIBgriQd\">\u9396\u4e0d\u91cb\u653e\u7684\u539f\u56e0<\/h2>\n<p>\u5118\u7ba1Redis\u9396\u7684\u8a2d\u8a08\u521d\u8877\u662f\u70ba\u4e86\u9632\u6b62\u7af6\u722d\u689d\u4ef6\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u9396\u4e0d\u91cb\u653e\u7684\u60c5\u6cc1\u6642\u6709\u767c\u751f\uff0c\u4e3b\u8981\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u696d\u52d9\u908f\u8f2f\u7570\u5e38<\/strong>\uff1a\u5982\u679c\u5728\u6301\u6709\u9396\u7684\u904e\u7a0b\u4e2d\u767c\u751f\u4e86\u7570\u5e38\uff0c\u53ef\u80fd\u5c0e\u81f4\u9396\u672a\u80fd\u91cb\u653e\u3002<\/li>\n<li><strong>\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u4e0d\u7576<\/strong>\uff1a\u5982\u679c\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u5f97\u904e\u77ed\uff0c\u53ef\u80fd\u5728\u696d\u52d9\u908f\u8f2f\u5c1a\u672a\u5b8c\u6210\u6642\u5c31\u81ea\u52d5\u91cb\u653e\uff0c\u5c0e\u81f4\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u9396\u3002<\/li>\n<li><strong>\u7db2\u7d61\u554f\u984c<\/strong>\uff1a\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u554f\u984c\u53ef\u80fd\u5c0e\u81f4\u9396\u7684\u91cb\u653e\u547d\u4ee4\u672a\u80fd\u5230\u9054Redis\u670d\u52d9\u5668\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-cklIBgriQd\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7aRedis\u9396\u4e0d\u91cb\u653e\u7684\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8redlock%e7%ae%97%e6%b3%95-cklIBgriQd\">1. \u4f7f\u7528Redlock\u7b97\u6cd5<\/h3>\n<p>Redlock\u662f\u4e00\u7a2e\u7531Redis\u5275\u59cb\u4ebaAntirez\u63d0\u51fa\u7684\u5206\u4f48\u5f0f\u9396\u7b97\u6cd5\u3002\u5b83\u901a\u904e\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e0a\u7372\u53d6\u9396\u4f86\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002\u5177\u9ad4\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<pre><code>\n1. \u7372\u53d6\u7576\u524d\u6642\u9593\u3002\n2. \u5728N\u500bRedis\u5be6\u4f8b\u4e0a\u4f9d\u6b21\u7372\u53d6\u9396\u3002\n3. \u8a08\u7b97\u7372\u53d6\u9396\u7684\u6642\u9593\uff0c\u4e26\u78ba\u4fdd\u5728\u904e\u671f\u6642\u9593\u5167\u5b8c\u6210\u3002\n4. \u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u8fd4\u56de\u9396\u7684\u552f\u4e00\u6a19\u8b58\u3002\n<\/code><\/pre>\n<h3 id=\"2-%e9%8e%96%e7%9a%84%e8%87%aa%e5%8b%95%e7%ba%8c%e6%9c%9f-cklIBgriQd\">2. \u9396\u7684\u81ea\u52d5\u7e8c\u671f<\/h3>\n<p>\u5728\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u904e\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u5b9a\u671f\u5411Redis\u767c\u9001\u7e8c\u671f\u8acb\u6c42\uff0c\u5ef6\u9577\u9396\u7684\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u56e0\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u6642\u9593\u904e\u9577\u800c\u5c0e\u81f4\u7684\u9396\u81ea\u52d5\u91cb\u653e\u554f\u984c\u3002<\/p>\n<pre><code>\nSET lock_key unique_value NX PX 30000\n\/\/ \u6bcf10\u79d2\u7e8c\u671f\u4e00\u6b21\n```\nwhile (true) {\n    \/\/ \u696d\u52d9\u908f\u8f2f\n    \/\/ ...\n    SET lock_key unique_value NX PX 30000\n    sleep(10);\n}\n<\/code><\/pre>\n<h3 id=\"3-%e9%8e%96%e7%9a%84%e5%bc%b7%e5%88%b6%e9%87%8b%e6%94%be-cklIBgriQd\">3. \u9396\u7684\u5f37\u5236\u91cb\u653e<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5f37\u5236\u91cb\u653e\u9396\u3002\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\u4f86\u78ba\u4fdd\u53ea\u6709\u64c1\u6709\u8005\u624d\u80fd\u91cb\u653e\u9396\u3002<\/p>\n<pre><code>\nif (get(lock_key) == unique_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cklIBgriQd\">\u7e3d\u7d50<\/h2>\n<p>Redis\u9396\u7684\u4f7f\u7528\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u81f3\u95dc\u91cd\u8981\uff0c\u4f46\u9396\u4e0d\u91cb\u653e\u7684\u554f\u984c\u4e5f\u5e38\u5e38\u56f0\u64fe\u8457\u958b\u767c\u8005\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u65bd\uff0c\u5982\u4f7f\u7528Redlock\u7b97\u6cd5\u3001\u81ea\u52d5\u7e8c\u671f\u548c\u5f37\u5236\u91cb\u653e\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u9396\u672a\u91cb\u653e\u7684\u539f\u56e0\u53ca\u89e3\u6c7a\u65b9\u6848\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u907f\u514d\u9396\u6b7b\u554f\u984c\u5f71\u97ff\u61c9\u7528\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-129399","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129399","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=129399"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129399\/revisions"}],"predecessor-version":[{"id":129400,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129399\/revisions\/129400"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}