{"id":163931,"date":"2024-11-05T03:37:29","date_gmt":"2024-11-04T19:37:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163931\/"},"modified":"2024-11-05T03:37:30","modified_gmt":"2024-11-04T19:37:30","slug":"%e8%a7%a3%e5%af%86redis%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8e%96%ef%bc%8c%e5%84%aa%e5%8c%96%e5%a4%9a%e7%b7%9a%e7%a8%8b%e6%93%8d%e4%bd%9c-redis%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163931\/","title":{"rendered":"\u89e3\u5bc6Redis\u6578\u64da\u5eab\u9396\uff0c\u512a\u5316\u591a\u7dda\u7a0b\u64cd\u4f5c (redis\u6578\u64da\u5eab\u9396)"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e5%af%86redis%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8e%96%ef%bc%8c%e5%84%aa%e5%8c%96%e5%a4%9a%e7%b7%9a%e7%a8%8b%e6%93%8d%e4%bd%9c-vXzeugaWxP\">\u89e3\u5bc6Redis\u6578\u64da\u5eab\u9396\uff0c\u512a\u5316\u591a\u7dda\u7a0b\u64cd\u4f5c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u5834\u666f\u3002\u96a8\u8457\u591a\u7dda\u7a0b\u64cd\u4f5c\u7684\u666e\u53ca\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u9396\u6210\u70ba\u4e86\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u6578\u64da\u5eab\u9396\u7684\u539f\u7406\u53ca\u5176\u5728\u591a\u7dda\u7a0b\u64cd\u4f5c\u4e2d\u7684\u512a\u5316\u7b56\u7565\u3002<\/p>\n<h2 id=\"redis%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-vXzeugaWxP\">Redis\u6578\u64da\u5eab\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u9396\u7684\u4e3b\u8981\u76ee\u7684\u662f\u9632\u6b62\u591a\u500b\u7dda\u7a0b\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u662f\u57fa\u65bcSETNX\u547d\u4ee4\u7684\u5206\u4f48\u5f0f\u9396\u3002<\/p>\n<h3 id=\"setnx%e5%91%bd%e4%bb%a4%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-vXzeugaWxP\">SETNX\u547d\u4ee4\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\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\u4e00\u7279\u6027\u4f7f\u5f97SETNX\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u53ea\u6709\u7576`lock_key`\u4e0d\u5b58\u5728\u6642\uff0c`unique_lock_value`\u624d\u6703\u88ab\u8a2d\u7f6e\uff0c\u9019\u6a23\u5c31\u5be6\u73fe\u4e86\u9396\u7684\u6548\u679c\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%84%aa%e5%8c%96%e7%ad%96%e7%95%a5-vXzeugaWxP\">Redis\u9396\u7684\u512a\u5316\u7b56\u7565<\/h2>\n<p>\u96d6\u7136Redis\u9396\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u591a\u7a2e\u56e0\u7d20\u4f86\u512a\u5316\u9396\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n<h3 id=\"1-%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-vXzeugaWxP\">1. \u9396\u7684\u904e\u671f\u6642\u9593<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\uff0c\u5efa\u8b70\u5728\u8a2d\u7f6e\u9396\u6642\u540c\u6642\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u67d0\u500b\u7dda\u7a0b\u5728\u6301\u6709\u9396\u7684\u904e\u7a0b\u4e2d\u767c\u751f\u4e86\u7570\u5e38\uff0c\u9396\u4e5f\u6703\u5728\u904e\u671f\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>SET lock_key unique_lock_value EX 10 NX\n<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u9396\u6703\u572810\u79d2\u5f8c\u81ea\u52d5\u904e\u671f\u3002<\/p>\n<h3 id=\"2-%e9%8e%96%e7%9a%84%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6-vXzeugaWxP\">2. \u9396\u7684\u91cd\u8a66\u6a5f\u5236<\/h3>\n<p>\u5728\u9ad8\u4f75\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u7372\u53d6\u9396\u7684\u8acb\u6c42\u53ef\u80fd\u6703\u983b\u7e41\u5931\u6557\u3002\u70ba\u4e86\u63d0\u9ad8\u6210\u529f\u7387\uff0c\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u91cd\u8a66\u6a5f\u5236\uff0c\u8b93\u7dda\u7a0b\u5728\u7372\u53d6\u9396\u5931\u6557\u5f8c\uff0c\u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u91cd\u8a66\u908f\u8f2f\u793a\u4f8b\uff1a<\/p>\n<pre><code>while (true) {\n    if (SETNX lock_key unique_lock_value {\n        \/\/ \u7372\u53d6\u9396\u6210\u529f\n        break;\n    }\n    \/\/ \u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\n    sleep(100);\n}\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8redisson%e7%ad%89%e9%ab%98%e7%b4%9a%e5%ba%ab-vXzeugaWxP\">3. \u4f7f\u7528Redisson\u7b49\u9ad8\u7d1a\u5eab<\/h3>\n<p>\u5c0d\u65bc\u9700\u8981\u66f4\u9ad8\u7d1a\u9396\u529f\u80fd\u7684\u61c9\u7528\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528Redisson\u7b49\u7b2c\u4e09\u65b9\u5eab\u3002Redisson\u63d0\u4f9b\u4e86\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396\u5be6\u73fe\uff0c\u652f\u6301\u516c\u5e73\u9396\u3001\u53ef\u91cd\u5165\u9396\u7b49\u591a\u7a2e\u9396\u985e\u578b\uff0c\u4e26\u4e14\u7c21\u5316\u4e86\u9396\u7684\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-vXzeugaWxP\">\u7d50\u8ad6<\/h2>\n<p>Redis\u6578\u64da\u5eab\u9396\u5728\u591a\u7dda\u7a0b\u64cd\u4f5c\u4e2d\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528SETNX\u547d\u4ee4\u3001\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3001\u5be6\u73fe\u91cd\u8a66\u6a5f\u5236\u4ee5\u53ca\u5229\u7528\u9ad8\u7d1a\u5eab\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u512a\u5316\u9396\u7684\u6027\u80fd\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u6548\u7387\u3002<\/p>\n<p>\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\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\u3002\u7121\u8ad6\u662f\u9078\u64c7 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u5bc6Redis\u6578\u64da\u5eab\u9396\uff0c\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u512a\u5316\u591a\u7dda\u7a0b\u64cd\u4f5c\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u5b89\u5168\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-163931","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163931","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=163931"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163931\/revisions"}],"predecessor-version":[{"id":163932,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163931\/revisions\/163932"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}