{"id":99198,"date":"2024-10-21T08:57:18","date_gmt":"2024-10-21T00:57:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/99198\/"},"modified":"2024-10-21T08:57:18","modified_gmt":"2024-10-21T00:57:18","slug":"redis-%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e5%af%a6%e7%8f%be%e7%9a%84%e7%89%88%e6%9c%ac%e8%ae%8a%e5%8c%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/99198\/","title":{"rendered":"Redis \u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u7684\u7248\u672c\u8b8a\u5316"},"content":{"rendered":"

Redis \u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u7684\u7248\u672c\u8b8a\u5316<\/h1>\n

\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\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\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u65b9\u5f0f\u3002\u96a8\u8457\u7248\u672c\u7684\u6f14\u9032\uff0cRedis \u7684\u9396\u5be6\u73fe\u4e5f\u7d93\u6b77\u4e86\u591a\u6b21\u8b8a\u5316\uff0c\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u4e9b\u8b8a\u5316\u53ca\u5176\u80cc\u5f8c\u7684\u6280\u8853\u539f\u7406\u3002<\/p>\n

Redis \u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5206\u5e03\u5f0f\u9396\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5728\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u4e4b\u9593\u5354\u8abf\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002Redis \u63d0\u4f9b\u7684\u9396\u901a\u5e38\u57fa\u65bc\u5176\u539f\u5b50\u64cd\u4f5c\u7684\u7279\u6027\uff0c\u80fd\u5920\u6709\u6548\u5730\u9632\u6b62\u6578\u64da\u7af6\u722d\u3002\u6700\u5e38\u898b\u7684\u5be6\u73fe\u65b9\u5f0f\u662f\u4f7f\u7528 Redis \u7684 SETNX \u547d\u4ee4\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u7528\u65bc\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u53ea\u6709\u7576\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u6210\u529f\u3002<\/p>\n

\u7248\u672c\u8b8a\u5316\u6982\u8ff0<\/h2>\n

Redis \u7684\u9396\u5be6\u73fe\u96a8\u8457\u7248\u672c\u7684\u66f4\u65b0\u800c\u4e0d\u65b7\u6539\u9032\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u4e3b\u8981\u7248\u672c\u4e2d\u7684\u9396\u5be6\u73fe\u8b8a\u5316\uff1a<\/p>\n

1. Redis 2.x \u7248\u672c<\/h3>\n

\u5728 Redis 2.x \u7248\u672c\u4e2d\uff0c\u6700\u57fa\u672c\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u662f\u4f7f\u7528 SETNX \u547d\u4ee4\u3002\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u5be6\u73fe\uff1a<\/p>\n

function acquireLock($redis, $lockKey, $expire) {\n    $result = $redis->setnx($lockKey, time() + $expire);\n    if ($result) {\n        return true;\n    }\n    $currentLockTime = $redis->get($lockKey);\n    if ($currentLockTime set($lockKey, time() + $expire);\n        return true;\n    }\n    return false;\n}\n<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u5b58\u5728\u4e00\u4e9b\u554f\u984c\uff0c\u4f8b\u5982\u6b7b\u9396\u548c\u9396\u7684\u904e\u671f\u554f\u984c\u3002<\/p>\n
2. Redis 3.x \u7248\u672c<\/h3>\n
\u5728 Redis 3.x \u7248\u672c\u4e2d\uff0c\u70ba\u4e86\u89e3\u6c7a\u6b7b\u9396\u554f\u984c\uff0c\u958b\u767c\u8005\u5f15\u5165\u4e86\u9396\u7684\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u67d0\u500b\u9032\u7a0b\u5728\u6301\u6709\u9396\u7684\u60c5\u6cc1\u4e0b\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u4ee5\u4e0b\u662f\u6539\u9032\u5f8c\u7684\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n
function acquireLock($redis, $lockKey, $expire) {\n    $result = $redis->set($lockKey, time() + $expire, ['NX', 'EX' => $expire]);\n    return $result !== false;\n}\n<\/code><\/pre>\n
\u9019\u6a23\u7684\u5be6\u73fe\u65b9\u5f0f\u5927\u5927\u6e1b\u5c11\u4e86\u6b7b\u9396\u7684\u98a8\u96aa\uff0c\u4e26\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n
3. Redis 4.x \u7248\u672c\u53ca\u4ee5\u5f8c<\/h3>\n
\u5728 Redis 4.x \u7248\u672c\u4e2d\uff0c\u9032\u4e00\u6b65\u5f15\u5165\u4e86 Redlock \u7b97\u6cd5\uff0c\u9019\u662f\u4e00\u7a2e\u57fa\u65bc\u591a\u500b Redis \u5be6\u4f8b\u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u3002Redlock \u7684\u6838\u5fc3\u601d\u60f3\u662f\u901a\u904e\u591a\u500b\u7368\u7acb\u7684 Redis \u5be6\u4f8b\u4f86\u7372\u53d6\u9396\uff0c\u5f9e\u800c\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002\u4ee5\u4e0b\u662f Redlock \u7684\u57fa\u672c\u5be6\u73fe\uff1a<\/p>\n
function acquireRedlock($redisInstances, $lockKey, $expire) {\n    $lockValue = uniqid();\n    $successCount = 0;\n    foreach ($redisInstances as $redis) {\n        if ($redis->set($lockKey, $lockValue, ['NX', 'EX' => $expire])) {\n            $successCount++;\n        }\n    }\n    return $successCount >= (count($redisInstances) \/ 2 + 1);\n}\n<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u80fd\u5920\u6709\u6548\u5730\u9632\u6b62\u55ae\u9ede\u6545\u969c\uff0c\u4e26\u63d0\u9ad8\u4e86\u9396\u7684\u53ef\u7528\u6027\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis \u7684\u5206\u5e03\u5f0f\u9396\u5be6\u73fe\u96a8\u8457\u7248\u672c\u7684\u6f14\u9032\u800c\u4e0d\u65b7\u6539\u9032\uff0c\u5f9e\u6700\u521d\u7684 SETNX \u5230\u5f8c\u4f86\u7684 Redlock \u7b97\u6cd5\uff0c\u9019\u4e9b\u8b8a\u5316\u4e0d\u50c5\u63d0\u9ad8\u4e86\u9396\u7684\u53ef\u9760\u6027\uff0c\u4e5f\u589e\u5f37\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u4e00\u81f4\u6027\u7684\u61c9\u7528\u5834\u666f\uff0c\u9078\u64c7\u5408\u9069\u7684 Redis \u9396\u5be6\u73fe\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc \u9999\u6e2fVPS<\/a> \u53ca\u5176\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u61c9\u7528\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u5206\u5e03\u5f0f\u9396\u7684\u7248\u672c\u8b8a\u5316\uff0c\u4e86\u89e3\u4e0d\u540c\u5be6\u73fe\u65b9\u5f0f\u53ca\u5176\u512a\u7f3a\u9ede\uff0c\u52a9\u529b\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u8a2d\u8a08\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-99198","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99198","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=99198"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99198\/revisions"}],"predecessor-version":[{"id":99199,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/99198\/revisions\/99199"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=99198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=99198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=99198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}