{"id":128861,"date":"2024-10-26T17:18:20","date_gmt":"2024-10-26T09:18:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128861\/"},"modified":"2024-10-26T17:18:21","modified_gmt":"2024-10-26T09:18:21","slug":"redis%e5%af%a6%e7%8f%be%e5%af%a6%e6%99%82%e9%98%b2%e6%ad%a2%e4%b8%a6%e7%99%bc%e8%a8%aa%e5%95%8f%ef%bc%88redis%e9%98%b2%e4%b8%a6%e7%99%bc%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128861\/","title":{"rendered":"Redis\u5be6\u73fe\u5be6\u6642\u9632\u6b62\u4e26\u767c\u8a2a\u554f\uff08redis\u9632\u4e26\u767c\u9396\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e5%af%a6%e6%99%82%e9%98%b2%e6%ad%a2%e4%b8%a6%e7%99%bc%e8%a8%aa%e5%95%8f%ef%bc%88redis%e9%98%b2%e4%b8%a6%e7%99%bc%e9%8e%96%ef%bc%89-htYQlnWoTc\">Redis\u5be6\u73fe\u5be6\u6642\u9632\u6b62\u4e26\u767c\u8a2a\u554f\uff08Redis\u9632\u4e26\u767c\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u4e26\u767c\u8a2a\u554f\u662f\u4e00\u500b\u5e38\u898b\u7684\u6311\u6230\u3002\u7576\u591a\u500b\u7528\u6236\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7cfb\u7d71\u5d29\u6f70\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9632\u4e26\u767c\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u4f86\u5be6\u73fe\u5be6\u6642\u9632\u6b62\u4e26\u767c\u8a2a\u554f\u7684\u6a5f\u5236\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%a6%e7%99%bc%e8%a8%aa%e5%95%8f%ef%bc%9f-htYQlnWoTc\">\u4ec0\u9ebc\u662f\u4e26\u767c\u8a2a\u554f\uff1f<\/h2>\n<p>\u4e26\u767c\u8a2a\u554f\u662f\u6307\u591a\u500b\u7528\u6236\u6216\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u7684\u60c5\u6cc1\u3002\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u7684\u7af6\u722d\u689d\u4ef6\uff0c\u5f9e\u800c\u5f15\u767c\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u4f8b\u5982\uff0c\u5169\u500b\u7528\u6236\u540c\u6642\u5617\u8a66\u66f4\u65b0\u540c\u4e00\u689d\u8a18\u9304\uff0c\u6700\u7d42\u53ef\u80fd\u53ea\u6703\u4fdd\u7559\u5176\u4e2d\u4e00\u500b\u7528\u6236\u7684\u66f4\u6539\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e7%89%b9%e6%80%a7-htYQlnWoTc\">Redis\u7684\u7279\u6027<\/h2>\n<p>Redis\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u6027\uff1a<\/p>\n<ul>\n<li>\u9ad8\u6548\u7684\u5167\u5b58\u5b58\u5132\uff1aRedis\u5c07\u6578\u64da\u5b58\u5132\u5728\u5167\u5b58\u4e2d\uff0c\u8b80\u53d6\u901f\u5ea6\u6975\u5feb\u3002<\/li>\n<li>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff1a\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002<\/li>\n<li>\u539f\u5b50\u64cd\u4f5c\uff1aRedis\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u64cd\u4f5c\u6642\u4e0d\u6703\u88ab\u5176\u4ed6\u64cd\u4f5c\u6253\u65b7\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e9%98%b2%e4%b8%a6%e7%99%bc%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95-htYQlnWoTc\">Redis\u9632\u4e26\u767c\u9396\u7684\u5be6\u73fe\u65b9\u6cd5<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u6709\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\u53ef\u4ee5\u5be6\u73fe\u9632\u4e26\u767c\u9396\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8setnx%e5%91%bd%e4%bb%a4-htYQlnWoTc\">1. \u4f7f\u7528SETNX\u547d\u4ee4<\/h3>\n<p>SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u7c21\u55ae\u7684\u9396\u6a5f\u5236\u3002\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u8a2d\u7f6e\u4e00\u500b\u9396\u7684\u9375\u3002\u5982\u679c\u8a72\u9375\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u3002<\/p>\n<pre><code>SETNX lock_key 1\nEXPIRE lock_key 10  \/\/ \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576\u7b2c\u4e00\u500b\u9032\u7a0b\u7372\u53d6\u9396\u5f8c\uff0c\u5176\u4ed6\u9032\u7a0b\u5c07\u7121\u6cd5\u7372\u53d6\u8a72\u9396\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u4e26\u767c\u8a2a\u554f\u7684\u554f\u984c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8redisson-htYQlnWoTc\">2. \u4f7f\u7528Redisson<\/h3>\n<p>Redisson\u662f\u4e00\u500b\u57fa\u65bcRedis\u7684Java\u5ba2\u6236\u7aef\uff0c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7d1a\u7684\u9396\u6a5f\u5236\u3002\u4f7f\u7528Redisson\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\uff0c\u4e26\u4e14\u652f\u6301\u9396\u7684\u81ea\u52d5\u91cb\u653e\u3002<\/p>\n<pre><code>RLock lock = redisson.getLock(\"lock_key\");\nlock.lock();  \/\/ \u7372\u53d6\u9396\ntry {\n    \/\/ \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n} finally {\n    lock.unlock();  \/\/ \u91cb\u653e\u9396\n}\n<\/code><\/pre>\n<h3 id=\"3-lua%e8%85%b3%e6%9c%ac-htYQlnWoTc\">3. Lua\u8173\u672c<\/h3>\n<p>Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5c07\u591a\u500b\u64cd\u4f5c\u6253\u5305\u6210\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u7372\u53d6\u9396\u548c\u57f7\u884c\u64cd\u4f5c\u4e4b\u9593\u7684\u6642\u9593\u7a97\u53e3\u3002<\/p>\n<pre><code>local lock = redis.call(\"SETNX\", KEYS[1], ARGV[1])\nif lock == 1 then\n    redis.call(\"EXPIRE\", KEYS[1], ARGV[2])\nend\nreturn lock\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-htYQlnWoTc\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u9632\u4e26\u767c\u9396\u662f\u4e00\u500b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\u3001Redisson\u6216Lua\u8173\u672c\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\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\u7ba1\u7406\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\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>\u4f86\u652f\u6301\u60a8\u7684Redis\u5be6\u73fe\uff0c\u78ba\u4fdd\u60a8\u7684\u7cfb\u7d71\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\u4f9d\u7136\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u5be6\u6642\u9632\u6b62\u4e26\u767c\u8a2a\u554f\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u5b89\u5168\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\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-128861","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128861","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=128861"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128861\/revisions"}],"predecessor-version":[{"id":128862,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128861\/revisions\/128862"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}