{"id":163589,"date":"2024-11-05T00:46:27","date_gmt":"2024-11-04T16:46:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163589\/"},"modified":"2024-11-05T00:46:28","modified_gmt":"2024-11-04T16:46:28","slug":"%e8%a7%a3%e6%b1%baredis%e9%8e%96%e5%88%aa%e9%99%a4%e5%a4%b1%e6%95%97%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e9%8e%96%e5%88%aa%e9%99%a4%e5%a4%b1%e6%95%97%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163589\/","title":{"rendered":"\u89e3\u6c7aRedis\u9396\u522a\u9664\u5931\u6557\u7684\u65b9\u6cd5\uff08redis\u9396\u522a\u9664\u5931\u6557\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%baredis%e9%8e%96%e5%88%aa%e9%99%a4%e5%a4%b1%e6%95%97%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e9%8e%96%e5%88%aa%e9%99%a4%e5%a4%b1%e6%95%97%ef%bc%89-KkyDdYEVRU\">\u89e3\u6c7aRedis\u9396\u522a\u9664\u5931\u6557\u7684\u65b9\u6cd5\uff08redis\u9396\u522a\u9664\u5931\u6557\uff09<\/h1>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u7d93\u5e38\u88ab\u7528\u4f86\u5be6\u73fe\u9396\u6a5f\u5236\u4ee5\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cRedis\u9396\u7684\u522a\u9664\u53ef\u80fd\u6703\u5931\u6557\uff0c\u9019\u6703\u5c0e\u81f4\u8cc7\u6e90\u7684\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u522a\u9664\u5931\u6557\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\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-KkyDdYEVRU\">Redis\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u9396\u901a\u5e38\u662f\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u9375\u4f86\u5be6\u73fe\u7684\uff0c\u9019\u500b\u9375\u7684\u503c\u662f\u9396\u7684\u64c1\u6709\u8005\u7684\u6a19\u8b58\u7b26\uff08\u5982UUID\uff09\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u8a2d\u7f6e\u9019\u500b\u9375\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002\u7576\u5ba2\u6236\u7aef\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u5b83\u9700\u8981\u522a\u9664\u9019\u500b\u9375\u4ee5\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"%e9%8e%96%e5%88%aa%e9%99%a4%e5%a4%b1%e6%95%97%e7%9a%84%e5%8e%9f%e5%9b%a0-KkyDdYEVRU\">\u9396\u522a\u9664\u5931\u6557\u7684\u539f\u56e0<\/h2>\n<ul>\n<li><strong>\u9396\u7684\u64c1\u6709\u8005\u4e0d\u6b63\u78ba\uff1a<\/strong>\u5982\u679c\u4e00\u500b\u5ba2\u6236\u7aef\u5617\u8a66\u522a\u9664\u4e00\u500b\u9396\uff0c\u4f46\u5b83\u4e26\u4e0d\u662f\u8a72\u9396\u7684\u64c1\u6709\u8005\uff0c\u5247\u522a\u9664\u64cd\u4f5c\u6703\u5931\u6557\u3002<\/li>\n<li><strong>\u9396\u5df2\u904e\u671f\uff1a<\/strong>\u5982\u679c\u9396\u7684\u904e\u671f\u6642\u9593\u5df2\u7d93\u5230\u9054\uff0cRedis\u6703\u81ea\u52d5\u522a\u9664\u8a72\u9396\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u5ba2\u6236\u7aef\u5728\u5617\u8a66\u522a\u9664\u6642\u767c\u751f\u932f\u8aa4\u3002<\/li>\n<li><strong>\u7db2\u7d61\u554f\u984c\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u5ef6\u9072\u6216\u6545\u969c\u53ef\u80fd\u5c0e\u81f4\u5ba2\u6236\u7aef\u7121\u6cd5\u6210\u529f\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u3002<\/li>\n<li><strong>Redis\u670d\u52d9\u5668\u6545\u969c\uff1a<\/strong>\u5982\u679cRedis\u670d\u52d9\u5668\u51fa\u73fe\u6545\u969c\uff0c\u5247\u6240\u6709\u7684\u64cd\u4f5c\uff0c\u5305\u62ec\u522a\u9664\u9396\uff0c\u90fd\u53ef\u80fd\u5931\u6557\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95-KkyDdYEVRU\">\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e9%8e%96%e7%9a%84%e6%93%81%e6%9c%89%e8%80%85-KkyDdYEVRU\">1. \u78ba\u8a8d\u9396\u7684\u64c1\u6709\u8005<\/h3>\n<p>\u5728\u522a\u9664\u9396\u4e4b\u524d\uff0c\u5ba2\u6236\u7aef\u61c9\u8a72\u78ba\u8a8d\u81ea\u5df1\u662f\u9396\u7684\u64c1\u6709\u8005\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6bd4\u8f03\u9396\u7684\u503c\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>if (redis.get(lockKey) == ownerId) {\n    redis.del(lockKey);\n}<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e5%8e%9f%e5%ad%90%e6%80%a7%e6%93%8d%e4%bd%9c-KkyDdYEVRU\">2. \u4f7f\u7528Lua\u8173\u672c\u539f\u5b50\u6027\u64cd\u4f5c<\/h3>\n<p>\u70ba\u4e86\u78ba\u4fdd\u9396\u7684\u522a\u9664\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684Lua\u8173\u672c\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u6aa2\u67e5\u9396\u64c1\u6709\u8005\u548c\u522a\u9664\u9396\u4e4b\u9593\u7684\u7af6\u722d\u689d\u4ef6\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>local lockValue = redis.call(\"get\", KEYS[1])\nif lockValue == ARGV[1] then\n    return redis.call(\"del\", KEYS[1])\nelse\n    return 0\nend<\/code><\/pre>\n<h3 id=\"3-%e8%a8%ad%e7%bd%ae%e5%90%88%e7%90%86%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-KkyDdYEVRU\">3. \u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5728\u8a2d\u7f6e\u9396\u6642\uff0c\u61c9\u6839\u64da\u696d\u52d9\u9700\u6c42\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u907f\u514d\u9396\u904e\u671f\u5c0e\u81f4\u7684\u554f\u984c\u3002\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u81ea\u52d5\u5ef6\u9577\u9396\u7684\u6a5f\u5236\uff0c\u78ba\u4fdd\u5728\u64cd\u4f5c\u672a\u5b8c\u6210\u6642\u4e0d\u6703\u91cb\u653e\u9396\u3002<\/p>\n<h3 id=\"4-%e8%99%95%e7%90%86%e7%b6%b2%e7%b5%a1%e5%95%8f%e9%a1%8c-KkyDdYEVRU\">4. \u8655\u7406\u7db2\u7d61\u554f\u984c<\/h3>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u554f\u984c\u662f\u4e0d\u53ef\u907f\u514d\u7684\u3002\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u91cd\u8a66\u6a5f\u5236\u4f86\u8655\u7406\u56e0\u7db2\u7d61\u554f\u984c\u5c0e\u81f4\u7684\u522a\u9664\u5931\u6557\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>for i = 1, maxRetries do\n    if (redis.del(lockKey) == 1) then\n        break\n    end\n    sleep(retryDelay)\nend<\/code><\/pre>\n<h3 id=\"5-%e7%9b%a3%e6%8e%a7redis%e6%9c%8d%e5%8b%99%e5%99%a8%e7%8b%80%e6%85%8b-KkyDdYEVRU\">5. \u76e3\u63a7Redis\u670d\u52d9\u5668\u72c0\u614b<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7Redis\u670d\u52d9\u5668\u7684\u72c0\u614b\uff0c\u53ca\u6642\u767c\u73fe\u4e26\u89e3\u6c7a\u6f5b\u5728\u7684\u6545\u969c\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u9396\u522a\u9664\u5931\u6557\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KkyDdYEVRU\">\u7e3d\u7d50<\/h2>\n<p>Redis\u9396\u7684\u522a\u9664\u5931\u6557\u53ef\u80fd\u6703\u5c0e\u81f4\u8cc7\u6e90\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\uff0c\u4e86\u89e3\u5176\u539f\u56e0\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6cd5\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u78ba\u8a8d\u9396\u7684\u64c1\u6709\u8005\u3001\u4f7f\u7528Lua\u8173\u672c\u3001\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\u3001\u8655\u7406\u7db2\u7d61\u554f\u984c\u4ee5\u53ca\u76e3\u63a7Redis\u670d\u52d9\u5668\u72c0\u614b\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u548c\u7a69\u5b9a\u7684\u670d\u52d9\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u5728\u9ad8\u8ca0\u8f09\u4e0b\u4ecd\u7136\u80fd\u5920\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u89e3\u6c7aRedis\u9396\u522a\u9664\u5931\u6557\u7684\u65b9\u6cd5\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u78ba\u4fdd\u9396\u7684\u6709\u6548\u7ba1\u7406\u8207\u91cb\u653e\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-163589","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163589","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=163589"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163589\/revisions"}],"predecessor-version":[{"id":163590,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163589\/revisions\/163590"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}