{"id":124004,"date":"2024-10-25T14:32:21","date_gmt":"2024-10-25T06:32:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/124004\/"},"modified":"2024-10-25T14:32:22","modified_gmt":"2024-10-25T06:32:22","slug":"redis-%e9%9b%86%e7%be%a4%e5%af%a6%e7%8f%be%e7%9a%84%e5%a4%9a%e7%b7%9a%e7%a8%8b%e4%b8%a6%e7%99%bc%e9%8e%96%e6%a9%9f%e5%88%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/124004\/","title":{"rendered":"Redis \u96c6\u7fa4\u5be6\u73fe\u7684\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236"},"content":{"rendered":"<h1 id=\"redis-%e9%9b%86%e7%be%a4%e5%af%a6%e7%8f%be%e7%9a%84%e5%a4%9a%e7%b7%9a%e7%a8%8b%e4%b8%a6%e7%99%bc%e9%8e%96%e6%a9%9f%e5%88%b6-GDqnUWTuFG\">Redis \u96c6\u7fa4\u5be6\u73fe\u7684\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u5be6\u73fe\u6578\u64da\u7684\u4e26\u767c\u8a2a\u554f\u3002\u5176\u4e2d\uff0c\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u7684\u4e00\u7a2e\u6709\u6548\u65b9\u6cd5\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u96c6\u7fa4\u4e2d\u5be6\u73fe\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%a6%e7%99%bc%e9%8e%96%ef%bc%9f-GDqnUWTuFG\">\u4ec0\u9ebc\u662f\u4e26\u767c\u9396\uff1f<\/h2>\n<p>\u4e26\u767c\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u591a\u500b\u7dda\u7a0b\u6216\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u7684\u6a5f\u5236\u3002\u7576\u4e00\u500b\u7dda\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u7dda\u7a0b\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u9396\u88ab\u91cb\u653e\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u554f\u984c\u3002\u5728 Redis \u4e2d\uff0c\u4e26\u767c\u9396\u901a\u5e38\u662f\u901a\u904e\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\u4f86\u5be6\u73fe\u7684\u3002<\/p>\n<h2 id=\"redis-%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-GDqnUWTuFG\">Redis \u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis \u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u4f7f\u7528 SETNX \u547d\u4ee4\u4f86\u8a2d\u7f6e\u4e00\u500b\u9396\u9375\u3002\u5982\u679c\u8a72\u9375\u4e0d\u5b58\u5728\uff0c\u5247\u8a2d\u7f6e\u6210\u529f\uff0c\u4e26\u8fd4\u56de 1\uff1b\u5982\u679c\u8a72\u9375\u5df2\u5b58\u5728\uff0c\u5247\u8fd4\u56de 0\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u4e00\u500b\u7dda\u7a0b\u80fd\u5920\u7372\u5f97\u9396\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u9396\u5be6\u73fe\u4ee3\u78bc\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\nEXPIRE lock_key 10\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`lock_key` \u662f\u9396\u7684\u540d\u7a31\uff0c`unique_lock_value` \u662f\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\u3002`EXPIRE` \u547d\u4ee4\u7528\u65bc\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h2 id=\"redis-%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-GDqnUWTuFG\">Redis \u96c6\u7fa4\u4e2d\u7684\u9396\u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u96c6\u7fa4\u4e2d\uff0c\u7531\u65bc\u6578\u64da\u5206\u7247\u7684\u7279\u6027\uff0c\u9396\u7684\u5be6\u73fe\u6703\u7a0d\u5fae\u8907\u96dc\u4e00\u4e9b\u3002\u6bcf\u500b\u5206\u7247\u90fd\u6709\u81ea\u5df1\u7684\u9375\u7a7a\u9593\uff0c\u56e0\u6b64\u9700\u8981\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\u548c\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe Redis \u96c6\u7fa4\u9396\u7684\u4e00\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<pre><code>function acquireLock($key, $value, $expire) {\n    $result = $redis-&gt;set($key, $value, ['nx', 'ex' =&gt; $expire]);\n    return $result;\n}\n\nfunction releaseLock($key, $value) {\n    $script = \"if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end\";\n    return $redis-&gt;eval($script, [$key, $value], 1);\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`acquireLock` \u51fd\u6578\u7528\u65bc\u7372\u53d6\u9396\uff0c\u800c `releaseLock` \u51fd\u6578\u7528\u65bc\u91cb\u653e\u9396\u3002\u4f7f\u7528 Lua \u8173\u672c\u4f86\u78ba\u4fdd\u91cb\u653e\u9396\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5176\u4ed6\u7dda\u7a0b\u5728\u91cb\u653e\u9396\u6642\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e4%b8%a6%e7%99%bc%e9%8e%96%e7%9a%84%e6%8c%91%e6%88%b0-GDqnUWTuFG\">\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u7684\u6311\u6230<\/h2>\n<p>\u5728\u5be6\u73fe\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u6311\u6230\uff0c\u4f8b\u5982\u6b7b\u9396\u3001\u9396\u7684\u904e\u671f\u548c\u6027\u80fd\u554f\u984c\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u6b7b\u9396\u6aa2\u6e2c\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u9396\u7684\u72c0\u614b\uff0c\u4e26\u5728\u5fc5\u8981\u6642\u91cb\u653e\u904e\u671f\u7684\u9396\u3002<\/li>\n<li><strong>\u9396\u7684\u91cd\u8a66\u6a5f\u5236\uff1a<\/strong>\u5728\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u8a2d\u7f6e\u91cd\u8a66\u6b21\u6578\u548c\u9593\u9694\u6642\u9593\uff0c\u4ee5\u63d0\u9ad8\u6210\u529f\u7387\u3002<\/li>\n<li><strong>\u4f7f\u7528 Redlock \u7b97\u6cd5\uff1a<\/strong>\u9019\u662f\u4e00\u7a2e\u57fa\u65bc Redis \u7684\u5206\u4f48\u5f0f\u9396\u7b97\u6cd5\uff0c\u53ef\u4ee5\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e4b\u9593\u5be6\u73fe\u9396\u7684\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-GDqnUWTuFG\">\u7e3d\u7d50<\/h2>\n<p>Redis \u96c6\u7fa4\u4e2d\u7684\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u4e26\u767c\u8a2a\u554f\u3002\u901a\u904e\u5408\u7406\u7684\u9396\u5be6\u73fe\u548c\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u4e26\u767c\u554f\u984c\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684 Redis \u96c6\u7fa4\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u96c6\u7fa4\u4e2d\u591a\u7dda\u7a0b\u4e26\u767c\u9396\u6a5f\u5236\u7684\u5be6\u73fe\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u8207\u5354\u4f5c\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-124004","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124004","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=124004"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124004\/revisions"}],"predecessor-version":[{"id":124005,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124004\/revisions\/124005"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=124004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=124004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=124004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}