{"id":163425,"date":"2024-11-04T23:24:18","date_gmt":"2024-11-04T15:24:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163425\/"},"modified":"2024-11-04T23:24:19","modified_gmt":"2024-11-04T15:24:19","slug":"%e8%a7%a3%e6%b1%baredis%e9%9a%8a%e5%88%97%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%e5%95%8f%e9%a1%8c%ef%bc%88redis%e9%9a%8a%e5%88%97%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163425\/","title":{"rendered":"\u89e3\u6c7aRedis\u968a\u5217\u91cd\u8907\u57f7\u884c\u554f\u984c\uff08Redis\u968a\u5217\u91cd\u8907\u57f7\u884c\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%baredis%e9%9a%8a%e5%88%97%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%e5%95%8f%e9%a1%8c%ef%bc%88redis%e9%9a%8a%e5%88%97%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%ef%bc%89-nKlolwjing\">\u89e3\u6c7aRedis\u968a\u5217\u91cd\u8907\u57f7\u884c\u554f\u984c\uff08Redis\u968a\u5217\u91cd\u8907\u57f7\u884c\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u4f3a\u670d\u5668\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528Redis\u4f5c\u70ba\u6d88\u606f\u968a\u5217\u6642\uff0c\u91cd\u8907\u57f7\u884c\u7684\u554f\u984c\u537b\u5e38\u5e38\u56f0\u64fe\u8457\u958b\u767c\u8005\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u968a\u5217\u91cd\u8907\u57f7\u884c\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e6%9c%83%e5%87%ba%e7%8f%be%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%e5%95%8f%e9%a1%8c%ef%bc%9f-nKlolwjing\">\u70ba\u4ec0\u9ebc\u6703\u51fa\u73fe\u91cd\u8907\u57f7\u884c\u554f\u984c\uff1f<\/h2>\n<p>\u91cd\u8907\u57f7\u884c\u554f\u984c\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u7db2\u7d61\u554f\u984c\uff1a<\/strong>\u5728\u7db2\u7d61\u4e0d\u7a69\u5b9a\u7684\u60c5\u6cc1\u4e0b\uff0c\u6d88\u8cbb\u8005\u53ef\u80fd\u6703\u91cd\u8a66\u672a\u6210\u529f\u7684\u4efb\u52d9\uff0c\u5c0e\u81f4\u540c\u4e00\u4efb\u52d9\u88ab\u591a\u6b21\u57f7\u884c\u3002<\/li>\n<li><strong>\u6d88\u8cbb\u8005\u5d29\u6f70\uff1a<\/strong>\u5982\u679c\u6d88\u8cbb\u8005\u5728\u8655\u7406\u4efb\u52d9\u6642\u5d29\u6f70\uff0c\u8a72\u4efb\u52d9\u53ef\u80fd\u6703\u88ab\u91cd\u65b0\u653e\u56de\u968a\u5217\uff0c\u5f9e\u800c\u5c0e\u81f4\u91cd\u8907\u57f7\u884c\u3002<\/li>\n<li><strong>\u696d\u52d9\u908f\u8f2f\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u696d\u52d9\u908f\u8f2f\u672a\u80fd\u6b63\u78ba\u8655\u7406\u4efb\u52d9\u7684\u72c0\u614b\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u91cd\u8907\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-nKlolwjing\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7aRedis\u968a\u5217\u91cd\u8907\u57f7\u884c\u7684\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%94%af%e4%b8%80%e6%a8%99%e8%ad%98%e7%ac%a6-nKlolwjing\">1. \u4f7f\u7528\u552f\u4e00\u6a19\u8b58\u7b26<\/h3>\n<p>\u70ba\u6bcf\u500b\u4efb\u52d9\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff08UUID\uff09\uff0c\u4e26\u5728\u8655\u7406\u4efb\u52d9\u4e4b\u524d\u6aa2\u67e5\u8a72\u6a19\u8b58\u7b26\u662f\u5426\u5df2\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u8df3\u904e\u8a72\u4efb\u52d9\u7684\u57f7\u884c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>function processTask(task) {\n    const taskId = task.id;\n    if (isTaskProcessed(taskId)) {\n        return; \/\/ \u4efb\u52d9\u5df2\u8655\u7406\uff0c\u8df3\u904e\n    }\n    \/\/ \u8655\u7406\u4efb\u52d9\n    markTaskAsProcessed(taskId);\n}<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8redis%e7%9a%84setnx%e5%91%bd%e4%bb%a4-nKlolwjing\">2. \u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4<\/h3>\n<p>Redis\u63d0\u4f9b\u7684SETNX\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u78ba\u4fdd\u67d0\u500b\u9375\u53ea\u88ab\u8a2d\u7f6e\u4e00\u6b21\u3002\u53ef\u4ee5\u5728\u8655\u7406\u4efb\u52d9\u4e4b\u524d\u4f7f\u7528SETNX\u4f86\u8a2d\u7f6e\u4e00\u500b\u9396\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u540c\u4e00\u4efb\u52d9\u88ab\u591a\u6b21\u57f7\u884c\uff1a<\/p>\n<pre><code>function processTask(task) {\n    const lockKey = `lock:${task.id}`;\n    const acquired = redis.set(lockKey, 'locked', 'NX', 'EX', 60); \/\/ 60\u79d2\u904e\u671f\n    if (!acquired) {\n        return; \/\/ \u9396\u5df2\u5b58\u5728\uff0c\u8df3\u904e\n    }\n    \/\/ \u8655\u7406\u4efb\u52d9\n    redis.del(lockKey); \/\/ \u8655\u7406\u5b8c\u6210\u5f8c\u522a\u9664\u9396\n}<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%b6%88%e6%81%af%e7%a2%ba%e8%aa%8d%e6%a9%9f%e5%88%b6-nKlolwjing\">3. \u4f7f\u7528\u6d88\u606f\u78ba\u8a8d\u6a5f\u5236<\/h3>\n<p>\u5728\u8655\u7406\u4efb\u52d9\u6642\uff0c\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u78ba\u8a8d\u6a5f\u5236\uff0c\u53ea\u6709\u5728\u4efb\u52d9\u6210\u529f\u8655\u7406\u5f8c\uff0c\u624d\u5f9e\u968a\u5217\u4e2d\u522a\u9664\u8a72\u4efb\u52d9\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u56e0\u70ba\u6d88\u8cbb\u8005\u5d29\u6f70\u6216\u7db2\u7d61\u554f\u984c\u5c0e\u81f4\u7684\u91cd\u8907\u57f7\u884c\uff1a<\/p>\n<pre><code>function processTask(task) {\n    try {\n        \/\/ \u8655\u7406\u4efb\u52d9\n        acknowledgeTask(task.id); \/\/ \u78ba\u8a8d\u4efb\u52d9\n    } catch (error) {\n        \/\/ \u8655\u7406\u5931\u6557\uff0c\u4efb\u52d9\u5c07\u4fdd\u7559\u5728\u968a\u5217\u4e2d\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-nKlolwjing\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u4f5c\u70ba\u6d88\u606f\u968a\u5217\u6642\uff0c\u91cd\u8907\u57f7\u884c\u554f\u984c\u662f\u4e00\u500b\u5e38\u898b\u7684\u6311\u6230\u3002\u901a\u904e\u4f7f\u7528\u552f\u4e00\u6a19\u8b58\u7b26\u3001Redis\u7684SETNX\u547d\u4ee4\u4ee5\u53ca\u6d88\u606f\u78ba\u8a8d\u6a5f\u5236\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6216\u6d88\u9664\u91cd\u8907\u57f7\u884c\u7684\u60c5\u6cc1\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7aRedis\u968a\u5217\u91cd\u8907\u57f7\u884c\u554f\u984c\uff0c\u78ba\u4fdd\u4efb\u52d9\u53ea\u57f7\u884c\u4e00\u6b21\uff0c\u63d0\u9ad8\u7cfb\u7d71\u6548\u7387\uff0c\u907f\u514d\u8cc7\u6e90\u6d6a\u8cbb\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-163425","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163425","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=163425"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163425\/revisions"}],"predecessor-version":[{"id":163426,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163425\/revisions\/163426"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}