{"id":163609,"date":"2024-11-05T00:56:30","date_gmt":"2024-11-04T16:56:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163609\/"},"modified":"2024-11-05T00:56:31","modified_gmt":"2024-11-04T16:56:31","slug":"%e8%a7%a3%e6%b1%baredis%e7%b3%bb%e7%b5%b1%e7%86%94%e6%96%b7%e8%88%87%e9%99%90%e6%b5%81%ef%bc%88redis%e7%86%94%e6%96%b7%e9%99%90%e6%b5%81%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163609\/","title":{"rendered":"\u89e3\u6c7aRedis\u7cfb\u7d71\u7194\u65b7\u8207\u9650\u6d41\uff08redis\u7194\u65b7\u9650\u6d41\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%baredis%e7%b3%bb%e7%b5%b1%e7%86%94%e6%96%b7%e8%88%87%e9%99%90%e6%b5%81%ef%bc%88redis%e7%86%94%e6%96%b7%e9%99%90%e6%b5%81%ef%bc%89-zToUIGlCnI\">\u89e3\u6c7aRedis\u7cfb\u7d71\u7194\u65b7\u8207\u9650\u6d41\uff08redis\u7194\u65b7\u9650\u6d41\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u96a8\u8457\u7528\u6236\u91cf\u7684\u589e\u52a0\u548c\u8acb\u6c42\u7684\u6fc0\u589e\uff0cRedis\u7cfb\u7d71\u53ef\u80fd\u6703\u9762\u81e8\u7194\u65b7\u548c\u9650\u6d41\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%86%94%e6%96%b7%e8%88%87%e9%99%90%e6%b5%81%ef%bc%9f-zToUIGlCnI\">\u4ec0\u9ebc\u662f\u7194\u65b7\u8207\u9650\u6d41\uff1f<\/h2>\n<p>\u7194\u65b7\u548c\u9650\u6d41\u662f\u5169\u7a2e\u5e38\u898b\u7684\u7cfb\u7d71\u4fdd\u8b77\u6a5f\u5236\u3002\u7194\u65b7\u662f\u6307\u5728\u7cfb\u7d71\u6aa2\u6e2c\u5230\u67d0\u500b\u670d\u52d9\u7684\u6545\u969c\u6216\u5ef6\u9072\u6642\uff0c\u66ab\u6642\u4e2d\u65b7\u5c0d\u8a72\u670d\u52d9\u7684\u8acb\u6c42\uff0c\u4ee5\u9632\u6b62\u6545\u969c\u64f4\u5927\u3002\u9650\u6d41\u5247\u662f\u901a\u904e\u9650\u5236\u55ae\u4f4d\u6642\u9593\u5167\u7684\u8acb\u6c42\u6578\u91cf\uff0c\u4f86\u4fdd\u8b77\u7cfb\u7d71\u4e0d\u88ab\u904e\u8f09\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e7%86%94%e6%96%b7%e8%88%87%e9%99%90%e6%b5%81%e5%af%a6%e7%8f%be-zToUIGlCnI\">Redis\u4e2d\u7684\u7194\u65b7\u8207\u9650\u6d41\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\u5be6\u73fe\u7194\u65b7\u548c\u9650\u6d41\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\uff0c\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e9%80%b2%e8%a1%8c%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c-zToUIGlCnI\">1. \u4f7f\u7528Lua\u8173\u672c\u9032\u884c\u539f\u5b50\u64cd\u4f5c<\/h3>\n<p>Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u539f\u5b50\u64cd\u4f5c\uff0c\u9019\u5c0d\u65bc\u5be6\u73fe\u9650\u6d41\u975e\u5e38\u6709\u6548\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u9650\u6d41\u793a\u4f8b\uff1a<\/p>\n<pre><code>local key = KEYS[1]\nlocal limit = tonumber(ARGV[1])\nlocal current = tonumber(redis.call('GET', key) or 0)\n\nif current + 1 &gt; limit then\n    return 0\nelse\n    redis.call('INCR', key)\n    redis.call('EXPIRE', key, 1) -- \u8a2d\u7f6e\u904e\u671f\u6642\u9593\n    return 1\nend<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e00\u500b\u9375\u4f86\u8ddf\u8e2a\u7576\u524d\u8acb\u6c42\u6578\u91cf\uff0c\u4e26\u5728\u8d85\u904e\u9650\u5236\u6642\u8fd4\u56de0\uff0c\u5426\u5247\u8fd4\u56de1\u4e26\u589e\u52a0\u8a08\u6578\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8redis%e7%9a%84%e9%81%8e%e6%9c%9f%e9%8d%b5%e5%8a%9f%e8%83%bd-zToUIGlCnI\">2. \u4f7f\u7528Redis\u7684\u904e\u671f\u9375\u529f\u80fd<\/h3>\n<p>Redis\u7684\u904e\u671f\u9375\u529f\u80fd\u53ef\u4ee5\u7528\u4f86\u81ea\u52d5\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u9019\u5c0d\u65bc\u9650\u6d41\u975e\u5e38\u6709\u7528\u3002\u901a\u904e\u8a2d\u7f6e\u8acb\u6c42\u8a08\u6578\u7684\u904e\u671f\u6642\u9593\uff0c\u53ef\u4ee5\u78ba\u4fdd\u5728\u4e00\u5b9a\u6642\u9593\u5167\u7684\u8acb\u6c42\u6578\u91cf\u4e0d\u6703\u8d85\u904e\u9810\u8a2d\u7684\u9650\u5236\u3002<\/p>\n<h3 id=\"3-%e7%86%94%e6%96%b7%e5%99%a8%e6%a8%a1%e5%bc%8f-zToUIGlCnI\">3. \u7194\u65b7\u5668\u6a21\u5f0f<\/h3>\n<p>\u7194\u65b7\u5668\u6a21\u5f0f\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u72c0\u614b\u6a19\u8a8c\u4f86\u5be6\u73fe\u3002\u7576\u7cfb\u7d71\u6aa2\u6e2c\u5230\u67d0\u500b\u670d\u52d9\u7684\u6545\u969c\u6642\uff0c\u53ef\u4ee5\u5c07\u8a72\u6a19\u8a8c\u8a2d\u7f6e\u70ba\u201c\u6253\u958b\u201d\uff0c\u4e26\u5728\u4e00\u6bb5\u6642\u9593\u5f8c\u81ea\u52d5\u6062\u5fa9\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7194\u65b7\u5668\u5be6\u73fe\uff1a<\/p>\n<pre><code>local key = KEYS[1]\nlocal state = redis.call('GET', key)\n\nif state == 'open' then\n    return '\u7194\u65b7\u4e2d'\nend\n\n-- \u5047\u8a2d\u9019\u88e1\u662f\u8abf\u7528\u5916\u90e8\u670d\u52d9\u7684\u4ee3\u78bc\nlocal success = callExternalService()\n\nif not success then\n    redis.call('SET', key, 'open', 'EX', 10) -- \u8a2d\u7f6e\u7194\u65b7\u72c0\u614b\uff0c10\u79d2\u5f8c\u81ea\u52d5\u6062\u5fa9\n    return '\u670d\u52d9\u6545\u969c'\nend\n\nreturn '\u670d\u52d9\u6b63\u5e38'<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-zToUIGlCnI\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u76e3\u63a7\u8207\u544a\u8b66\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7Redis\u7684\u6027\u80fd\u6307\u6a19\uff0c\u5982\u5ef6\u9072\u3001\u932f\u8aa4\u7387\u7b49\uff0c\u4e26\u8a2d\u7f6e\u544a\u8b66\u6a5f\u5236\u3002<\/li>\n<li><strong>\u5408\u7406\u914d\u7f6e\uff1a<\/strong>\u6839\u64da\u5be6\u969b\u9700\u6c42\u5408\u7406\u914d\u7f6eRedis\u7684\u5167\u5b58\u548c\u6301\u4e45\u5316\u7b56\u7565\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u8207\u512a\u5316\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u9032\u884c\u58d3\u529b\u6e2c\u8a66\uff0c\u6839\u64da\u6e2c\u8a66\u7d50\u679c\u4e0d\u65b7\u512a\u5316\u9650\u6d41\u548c\u7194\u65b7\u7b56\u7565\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-zToUIGlCnI\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0cRedis\u7684\u7194\u65b7\u8207\u9650\u6d41\u6a5f\u5236\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u7684\u91cd\u8981\u624b\u6bb5\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\u548c\u6545\u969c\u64f4\u5927\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\uff0c\u5efa\u8b70\u6df1\u5165\u7814\u7a76Redis\u7684\u7279\u6027\uff0c\u4e26\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7cfb\u7d71\u7194\u65b7\u8207\u9650\u6d41\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u8207\u7528\u6236\u9ad4\u9a57\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-163609","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163609","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=163609"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163609\/revisions"}],"predecessor-version":[{"id":163610,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163609\/revisions\/163610"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}