{"id":196582,"date":"2024-11-14T00:48:21","date_gmt":"2024-11-13T16:48:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196582\/"},"modified":"2024-11-14T00:48:22","modified_gmt":"2024-11-13T16:48:22","slug":"%e9%87%8d%e6%a7%8b%e9%ab%98%e6%80%a7%e8%83%bdredis%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%e5%af%a6%e8%b8%90%ef%bc%88redis%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196582\/","title":{"rendered":"\u91cd\u69cb\u9ad8\u6027\u80fdRedis\u7d30\u7c92\u5ea6\u9396\u5be6\u8e10\uff08redis\u7d30\u7c92\u5ea6\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e9%87%8d%e6%a7%8b%e9%ab%98%e6%80%a7%e8%83%bdredis%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%e5%af%a6%e8%b8%90%ef%bc%88redis%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%ef%bc%89-DGHXQSbesy\">\u91cd\u69cb\u9ad8\u6027\u80fdRedis\u7d30\u7c92\u5ea6\u9396\u5be6\u8e10\uff08redis\u7d30\u7c92\u5ea6\u9396\uff09<\/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\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u548c\u5beb\u5165\u7684\u61c9\u7528\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u7cfb\u7d71\u7684\u64f4\u5c55\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u4e26\u767c\u8a2a\u554f\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002\u7d30\u7c92\u5ea6\u9396\u4f5c\u70ba\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5728\u4fdd\u8b49\u6578\u64da\u4e00\u81f4\u6027\u7684\u540c\u6642\uff0c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%ef%bc%9f-DGHXQSbesy\">\u4ec0\u9ebc\u662f\u7d30\u7c92\u5ea6\u9396\uff1f<\/h2>\n<p>\u7d30\u7c92\u5ea6\u9396\u662f\u6307\u5728\u6578\u64da\u7d50\u69cb\u7684\u66f4\u5c0f\u7bc4\u570d\u5167\u9032\u884c\u9396\u5b9a\uff0c\u800c\u4e0d\u662f\u5c0d\u6574\u500b\u6578\u64da\u96c6\u9032\u884c\u9396\u5b9a\u3002\u9019\u6a23\u7684\u505a\u6cd5\u53ef\u4ee5\u6e1b\u5c11\u9396\u7684\u7af6\u722d\uff0c\u63d0\u9ad8\u7cfb\u7d71\u7684\u4e26\u767c\u6027\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u7528\u6236\u7684\u8cc7\u6599\uff0c\u7d30\u7c92\u5ea6\u9396\u53ef\u4ee5\u53ea\u9396\u5b9a\u8a72\u7528\u6236\u7684\u7279\u5b9a\u5b57\u6bb5\uff0c\u800c\u4e0d\u662f\u6574\u500b\u7528\u6236\u8cc7\u6599\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%e5%af%a6%e7%8f%be-DGHXQSbesy\">Redis\u4e2d\u7684\u7d30\u7c92\u5ea6\u9396\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\u5be6\u73fe\u7d30\u7c92\u5ea6\u9396\u7684\u65b9\u5f0f\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8redis%e7%9a%84setnx%e5%91%bd%e4%bb%a4-DGHXQSbesy\">1. \u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4<\/h3>\n<p>SETNX\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u7c21\u55ae\u7684\u9396\u3002\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u53ef\u4ee5\u5617\u8a66\u57f7\u884cSETNX\u547d\u4ee4\u3002\u5982\u679c\u8fd4\u56de\u503c\u70ba1\uff0c\u5247\u8868\u793a\u9396\u7372\u53d6\u6210\u529f\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u3002<\/p>\n<pre><code>SETNX lock:user:1 1\nEXPIRE lock:user:1 10\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u9396\u7684\u540d\u7a31\u70ba\u201clock:user:1\u201d\uff0c\u4e26\u8a2d\u7f6e\u4e8610\u79d2\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8redisson%e6%a1%86%e6%9e%b6-DGHXQSbesy\">2. \u4f7f\u7528Redisson\u6846\u67b6<\/h3>\n<p>Redisson\u662f\u4e00\u500b\u57fa\u65bcRedis\u7684Java\u5ba2\u6236\u7aef\uff0c\u63d0\u4f9b\u4e86\u9ad8\u7d1a\u7684\u9396\u529f\u80fd\u3002\u4f7f\u7528Redisson\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u7d30\u7c92\u5ea6\u9396\uff0c\u4e26\u4e14\u652f\u6301\u516c\u5e73\u9396\u548c\u53ef\u91cd\u5165\u9396\u7b49\u7279\u6027\u3002<\/p>\n<pre><code>RLock lock = redisson.getLock(\"lock:user:1\");\nlock.lock();\ntry {\n    \/\/ \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n} finally {\n    lock.unlock();\n}\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528Redisson\u7372\u53d6\u548c\u91cb\u653e\u9396\uff0c\u78ba\u4fdd\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\u80fd\u5920\u6b63\u78ba\u91cb\u653e\u9396\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e5%af%a6%e7%8f%be%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c-DGHXQSbesy\">3. \u4f7f\u7528Lua\u8173\u672c\u5be6\u73fe\u539f\u5b50\u64cd\u4f5c<\/h3>\n<p>Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5c07\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\uff0c\u5f9e\u800c\u907f\u514d\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n<pre><code>local lock_key = KEYS[1]\nlocal lock_value = ARGV[1]\nif redis.call(\"SETNX\", lock_key, lock_value) == 1 then\n    redis.call(\"EXPIRE\", lock_key, 10)\n    return 1\nelse\n    return 0\nend\n<\/code><\/pre>\n<p>\u9019\u6bb5Lua\u8173\u672c\u6aa2\u67e5\u9396\u662f\u5426\u53ef\u7528\uff0c\u4e26\u5728\u7372\u53d6\u9396\u5f8c\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002<\/p>\n<h2 id=\"%e7%b4%b0%e7%b2%92%e5%ba%a6%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-DGHXQSbesy\">\u7d30\u7c92\u5ea6\u9396\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u4e26\u767c\u6027\uff1a<\/strong>\u7d30\u7c92\u5ea6\u9396\u5141\u8a31\u591a\u500b\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u4e0d\u540c\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u9396\u7af6\u722d\uff1a<\/strong>\u7531\u65bc\u9396\u7684\u7bc4\u570d\u66f4\u5c0f\uff0c\u7af6\u722d\u7684\u53ef\u80fd\u6027\u964d\u4f4e\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u6b7b\u9396\u7684\u98a8\u96aa\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u9396\u7684\u7c92\u5ea6\uff0c\u9748\u6d3b\u8abf\u6574\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-DGHXQSbesy\">\u7d50\u8ad6<\/h2>\n<p>\u7d30\u7c92\u5ea6\u9396\u5728Redis\u4e2d\u7684\u5be6\u73fe\u70ba\u9ad8\u6027\u80fd\u7684\u6578\u64da\u8a2a\u554f\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528Redis\u7684\u547d\u4ee4\u548c\u5de5\u5177\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u4fdd\u8b49\u6578\u64da\u4e00\u81f4\u6027\u7684\u540c\u6642\uff0c\u986f\u8457\u63d0\u9ad8\u7cfb\u7d71\u7684\u4e26\u767c\u6027\u80fd\u3002\u96a8\u8457\u61c9\u7528\u9700\u6c42\u7684\u589e\u9577\uff0c\u7d30\u7c92\u5ea6\u9396\u7684\u5be6\u8e10\u5c07\u6210\u70ba\u5206\u4f48\u5f0f\u7cfb\u7d71\u8a2d\u8a08\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u8003\u91cf\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u9ad8\u6027\u80fd\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\uff0c\u52a9\u60a8\u69cb\u5efa\u9ad8\u6548\u7684\u61c9\u7528\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u91cd\u69cb\u9ad8\u6027\u80fdRedis\u7d30\u7c92\u5ea6\u9396\u7684\u5be6\u8e10\uff0c\u63d0\u5347\u7cfb\u7d71\u6548\u7387\u8207\u4e26\u767c\u6027\u80fd\uff0c\u5be6\u73fe\u66f4\u7cbe\u7d30\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-196582","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196582","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=196582"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196582\/revisions"}],"predecessor-version":[{"id":196583,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196582\/revisions\/196583"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}