{"id":128107,"date":"2024-10-26T11:43:20","date_gmt":"2024-10-26T03:43:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128107\/"},"modified":"2024-10-26T11:43:21","modified_gmt":"2024-10-26T03:43:21","slug":"redis-%e8%a8%ad%e7%bd%ae%e9%8e%96%e7%82%ba%e7%8d%b2%e5%8f%96%e6%9b%b4%e5%a5%bd%e7%9a%84%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128107\/","title":{"rendered":"Redis \u8a2d\u7f6e\u9396\u70ba\u7372\u53d6\u66f4\u597d\u7684\u6027\u80fd"},"content":{"rendered":"<h1 id=\"redis-%e8%a8%ad%e7%bd%ae%e9%8e%96%e7%82%ba%e7%8d%b2%e5%8f%96%e6%9b%b4%e5%a5%bd%e7%9a%84%e6%80%a7%e8%83%bd-EZApjRsLyR\">Redis \u8a2d\u7f6e\u9396\u70ba\u7372\u53d6\u66f4\u597d\u7684\u6027\u80fd<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0c\u6027\u80fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002\u70ba\u4e86\u9032\u4e00\u6b65\u63d0\u5347\u6027\u80fd\uff0c\u8a2d\u7f6e\u9396\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u8a2d\u7f6e\u9396\u4ee5\u7372\u53d6\u66f4\u597d\u7684\u6027\u80fd\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-redis-%e9%8e%96%ef%bc%9f-EZApjRsLyR\">\u4ec0\u9ebc\u662f Redis \u9396\uff1f<\/h2>\n<p>Redis \u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u662f\u57fa\u65bc SETNX \u547d\u4ee4\u7684\u9396\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-setnx-%e5%91%bd%e4%bb%a4%e8%a8%ad%e7%bd%ae%e9%8e%96-EZApjRsLyR\">\u4f7f\u7528 SETNX \u547d\u4ee4\u8a2d\u7f6e\u9396<\/h2>\n<p>SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u8a2d\u7f6e\u4e00\u500b\u9375\uff0c\u53ea\u6709\u7576\u8a72\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u6210\u529f\u3002\u9019\u4f7f\u5f97\u5b83\u6210\u70ba\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u7406\u60f3\u9078\u64c7\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 SETNX \u547d\u4ee4\u8a2d\u7f6e\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c`lock_key` \u662f\u9396\u7684\u540d\u7a31\uff0c\u800c `unique_lock_value` \u662f\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\u3002\u6210\u529f\u8a2d\u7f6e\u9396\u5f8c\uff0c\u5ba2\u6236\u7aef\u53ef\u4ee5\u5b89\u5168\u5730\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-EZApjRsLyR\">\u9396\u7684\u904e\u671f\u6642\u9593<\/h2>\n<p>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\uff0c\u5efa\u8b70\u70ba\u9396\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>SET<\/code> \u547d\u4ee4\u7684 <code>EX<\/code> \u53c3\u6578\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SET lock_key unique_lock_value EX 10 NX\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u9396\u5c07\u5728 10 \u79d2\u5f8c\u81ea\u52d5\u91cb\u653e\uff0c\u5f9e\u800c\u907f\u514d\u6b7b\u9396\u7684\u98a8\u96aa\u3002<\/p>\n<h2 id=\"%e9%87%8b%e6%94%be%e9%8e%96-EZApjRsLyR\">\u91cb\u653e\u9396<\/h2>\n<p>\u5728\u5b8c\u6210\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u64cd\u4f5c\u5f8c\uff0c\u5fc5\u9808\u91cb\u653e\u9396\u3002\u91cb\u653e\u9396\u7684\u904e\u7a0b\u9700\u8981\u78ba\u4fdd\u53ea\u6709\u9396\u7684\u64c1\u6709\u8005\u624d\u80fd\u91cb\u653e\u9396\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u503c\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>if (GET lock_key == unique_lock_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u8a72\u9396\u7684\u5ba2\u6236\u7aef\u624d\u80fd\u91cb\u653e\u5b83\uff0c\u5f9e\u800c\u907f\u514d\u5176\u4ed6\u5ba2\u6236\u7aef\u610f\u5916\u91cb\u653e\u9396\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-EZApjRsLyR\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u552f\u4e00\u6a19\u8b58\u7b26\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u9396\u90fd\u6709\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u4ee5\u4fbf\u6b63\u78ba\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u6839\u64da\u696d\u52d9\u9700\u6c42\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u6b7b\u9396\u3002<\/li>\n<li><strong>\u4f7f\u7528 Lua \u8173\u672c\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528 Lua \u8173\u672c\u4f86\u539f\u5b50\u6027\u5730\u8a2d\u7f6e\u548c\u91cb\u653e\u9396\uff0c\u9032\u4e00\u6b65\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-EZApjRsLyR\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Redis \u4e2d\u8a2d\u7f6e\u9396\u662f\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\u3002\u901a\u904e\u4f7f\u7528 SETNX \u547d\u4ee4\u3001\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u4ee5\u53ca\u6b63\u78ba\u91cb\u653e\u9396\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u554f\u984c\u3002\u9019\u4e9b\u6700\u4f73\u5be6\u8e10\u5c07\u5e6b\u52a9\u958b\u767c\u8005\u5728\u4f7f\u7528 Redis \u6642\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\uff0c\u7121\u8ad6\u662f\u9ad8\u6027\u80fd\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a> \u9084\u662f\u9748\u6d3b\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u8a2d\u7f6e\u9396\uff0c\u4ee5\u63d0\u5347\u6027\u80fd\u548c\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\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-128107","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128107","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=128107"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128107\/revisions"}],"predecessor-version":[{"id":128108,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128107\/revisions\/128108"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}