{"id":129401,"date":"2024-10-26T21:20:23","date_gmt":"2024-10-26T13:20:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129401\/"},"modified":"2024-10-26T21:20:24","modified_gmt":"2024-10-26T13:20:24","slug":"redis%e9%8e%96%e5%a4%b1%e6%95%97%e8%ac%b9%e6%85%8e%e6%8e%92%e6%9f%a5%e5%8e%9f%e5%9b%a0%ef%bc%88redis%e9%8e%96%e5%a4%b1%e6%95%97%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129401\/","title":{"rendered":"Redis\u9396\u5931\u6557\u8b39\u614e\u6392\u67e5\u539f\u56e0\uff08redis\u9396\u5931\u6557\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%8e%96%e5%a4%b1%e6%95%97%e8%ac%b9%e6%85%8e%e6%8e%92%e6%9f%a5%e5%8e%9f%e5%9b%a0%ef%bc%88redis%e9%8e%96%e5%a4%b1%e6%95%97%ef%bc%89-ruaAxdWudU\">Redis\u9396\u5931\u6557\u8b39\u614e\u6392\u67e5\u539f\u56e0\uff08redis\u9396\u5931\u6557\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\u3002\u7136\u800c\uff0c\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cRedis\u9396\u5931\u6557\u7684\u60c5\u6cc1\u6642\u6709\u767c\u751f\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7cfb\u7d71\u6027\u80fd\u4e0b\u964d\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u5931\u6557\u7684\u539f\u56e0\u53ca\u5176\u6392\u67e5\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-ruaAxdWudU\">Redis\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u9396\u901a\u5e38\u662f\u901a\u904eSETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u7684\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u7576\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u4e26\u8fd4\u56de1\uff1b\u5982\u679c\u9375\u5df2\u5b58\u5728\uff0c\u5247\u8fd4\u56de0\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5229\u7528SETNX\u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u3002<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5728\u7372\u53d6\u9396\u5f8c\uff0c\u901a\u5e38\u6703\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u6b7b\u9396\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e5%a4%b1%e6%95%97%e7%9a%84%e5%b8%b8%e8%a6%8b%e5%8e%9f%e5%9b%a0-ruaAxdWudU\">Redis\u9396\u5931\u6557\u7684\u5e38\u898b\u539f\u56e0<\/h2>\n<h3 id=\"1-%e9%8e%96%e5%b7%b2%e8%a2%ab%e5%85%b6%e4%bb%96%e9%80%b2%e7%a8%8b%e6%8c%81%e6%9c%89-ruaAxdWudU\">1. \u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u6301\u6709<\/h3>\n<p>\u7576\u4e00\u500b\u9032\u7a0b\u5617\u8a66\u7372\u53d6\u9396\u6642\uff0c\u5982\u679c\u8a72\u9396\u5df2\u7d93\u88ab\u5176\u4ed6\u9032\u7a0b\u6301\u6709\uff0c\u5247\u6703\u5c0e\u81f4\u9396\u7372\u53d6\u5931\u6557\u3002\u9019\u662f\u6700\u5e38\u898b\u7684\u539f\u56e0\u4e4b\u4e00\u3002\u70ba\u4e86\u6392\u67e5\u9019\u4e00\u554f\u984c\uff0c\u53ef\u4ee5\u6aa2\u67e5\u7576\u524d\u6301\u6709\u9396\u7684\u9032\u7a0b\uff0c\u4e26\u5206\u6790\u5176\u57f7\u884c\u72c0\u614b\u3002<\/p>\n<h3 id=\"2-%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e8%a8%ad%e7%bd%ae%e4%b8%8d%e7%95%b6-ruaAxdWudU\">2. \u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u4e0d\u7576<\/h3>\n<p>\u5982\u679c\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u5f97\u904e\u77ed\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u5728\u9032\u7a0b\u5b8c\u6210\u64cd\u4f5c\u4e4b\u524d\u5c31\u88ab\u81ea\u52d5\u91cb\u653e\uff0c\u5f9e\u800c\u5c0e\u81f4\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u9396\u5931\u6557\u3002\u5efa\u8b70\u6839\u64da\u5be6\u969b\u64cd\u4f5c\u7684\u8017\u6642\u4f86\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/p>\n<pre><code>SET lock_key unique_lock_value EX 30 NX\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u547d\u4ee4\u8a2d\u7f6e\u4e8630\u79d2\u7684\u904e\u671f\u6642\u9593\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u907f\u514d\u9396\u7684\u904e\u671f\u554f\u984c\u3002<\/p>\n<h3 id=\"3-%e7%b6%b2%e7%b5%a1%e5%bb%b6%e9%81%b2%e6%88%96%e6%95%85%e9%9a%9c-ruaAxdWudU\">3. \u7db2\u7d61\u5ef6\u9072\u6216\u6545\u969c<\/h3>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u5ef6\u9072\u6216\u6545\u969c\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u7684\u7372\u53d6\u5931\u6557\u3002\u5982\u679cRedis\u670d\u52d9\u5668\u8207\u5ba2\u6236\u7aef\u4e4b\u9593\u7684\u7db2\u7d61\u9023\u63a5\u4e0d\u7a69\u5b9a\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4SETNX\u547d\u4ee4\u672a\u80fd\u6210\u529f\u57f7\u884c\u3002\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u7db2\u7d61\u72c0\u614b\u548cRedis\u670d\u52d9\u5668\u7684\u5065\u5eb7\u72c0\u6cc1\u4f86\u9032\u884c\u6392\u67e5\u3002<\/p>\n<h3 id=\"4-%e9%8e%96%e7%9a%84%e5%94%af%e4%b8%80%e6%80%a7%e5%95%8f%e9%a1%8c-ruaAxdWudU\">4. \u9396\u7684\u552f\u4e00\u6027\u554f\u984c<\/h3>\n<p>\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\u3002\u5982\u679c\u591a\u500b\u9032\u7a0b\u4f7f\u7528\u76f8\u540c\u7684\u9396\u9375\uff0c\u5247\u6703\u5c0e\u81f4\u9396\u7684\u7372\u53d6\u5931\u6557\u3002\u5efa\u8b70\u5728\u8a2d\u8a08\u9396\u7684\u6642\u5019\uff0c\u4f7f\u7528\u552f\u4e00\u7684\u6a19\u8b58\u7b26\u4f86\u5340\u5206\u4e0d\u540c\u7684\u9396\u3002<\/p>\n<pre><code>SETNX lock_key process_id\n<\/code><\/pre>\n<p>\u9019\u88e1\u7684process_id\u53ef\u4ee5\u662f\u7576\u524d\u9032\u7a0b\u7684\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u9396\u7684\u885d\u7a81\u3002<\/p>\n<h2 id=\"%e6%8e%92%e6%9f%a5redis%e9%8e%96%e5%a4%b1%e6%95%97%e7%9a%84%e6%ad%a5%e9%a9%9f-ruaAxdWudU\">\u6392\u67e5Redis\u9396\u5931\u6557\u7684\u6b65\u9a5f<\/h2>\n<ul>\n<li>\u6aa2\u67e5\u7576\u524d\u6301\u6709\u9396\u7684\u9032\u7a0b\uff0c\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u9032\u7a0b\u5728\u4f7f\u7528\u8a72\u9396\u3002<\/li>\n<li>\u6aa2\u67e5\u9396\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\uff0c\u78ba\u4fdd\u5176\u8db3\u5920\u9577\u4ee5\u5b8c\u6210\u64cd\u4f5c\u3002<\/li>\n<li>\u6aa2\u67e5\u7db2\u7d61\u72c0\u614b\uff0c\u78ba\u4fddRedis\u670d\u52d9\u5668\u53ef\u9054\u3002<\/li>\n<li>\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\uff0c\u907f\u514d\u591a\u500b\u9032\u7a0b\u4f7f\u7528\u76f8\u540c\u7684\u9396\u9375\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ruaAxdWudU\">\u7e3d\u7d50<\/h2>\n<p>Redis\u9396\u7684\u5931\u6557\u53ef\u80fd\u7531\u591a\u7a2e\u56e0\u7d20\u5f15\u8d77\uff0c\u5305\u62ec\u9396\u7684\u6301\u6709\u72c0\u614b\u3001\u904e\u671f\u6642\u9593\u3001\u7db2\u7d61\u554f\u984c\u53ca\u9396\u7684\u552f\u4e00\u6027\u7b49\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u8b39\u614e\u6392\u67e5\u9019\u4e9b\u554f\u984c\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7a69\u5b9a\u7684\u670d\u52d9\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Redis\u9396\u5931\u6557\u7684\u5e38\u898b\u539f\u56e0\uff0c\u4e26\u5b78\u7fd2\u5982\u4f55\u8b39\u614e\u6392\u67e5\u554f\u984c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6027\u80fd\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-129401","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129401","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=129401"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129401\/revisions"}],"predecessor-version":[{"id":129402,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129401\/revisions\/129402"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}