{"id":183140,"date":"2024-11-10T02:20:19","date_gmt":"2024-11-09T18:20:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183140\/"},"modified":"2024-11-10T02:20:20","modified_gmt":"2024-11-09T18:20:20","slug":"%e5%af%a6%e7%8f%beredis%e8%87%aa%e5%a2%9e%e5%80%bc%e7%9a%84%e6%9c%80%e5%b0%8f%e8%a8%ad%e5%ae%9a%ef%bc%88redis%e8%a8%ad%e5%ae%9a%e8%87%aa%e5%a2%9e%e6%9c%80%e5%b0%8f%e5%80%bc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183140\/","title":{"rendered":"\u5be6\u73feRedis\u81ea\u589e\u503c\u7684\u6700\u5c0f\u8a2d\u5b9a\uff08redis\u8a2d\u5b9a\u81ea\u589e\u6700\u5c0f\u503c\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%beredis%e8%87%aa%e5%a2%9e%e5%80%bc%e7%9a%84%e6%9c%80%e5%b0%8f%e8%a8%ad%e5%ae%9a%ef%bc%88redis%e8%a8%ad%e5%ae%9a%e8%87%aa%e5%a2%9e%e6%9c%80%e5%b0%8f%e5%80%bc%ef%bc%89-SofbwHzERk\">\u5be6\u73feRedis\u81ea\u589e\u503c\u7684\u6700\u5c0f\u8a2d\u5b9a\uff08redis\u8a2d\u5b9a\u81ea\u589e\u6700\u5c0f\u503c\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u548c\u5beb\u5165\u7684\u61c9\u7528\u4e2d\u3002\u81ea\u589e\u503c\uff08increment\uff09\u662fRedis\u7684\u4e00\u500b\u91cd\u8981\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5c0d\u67d0\u500b\u9375\u7684\u503c\u9032\u884c\u81ea\u52d5\u589e\u52a0\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u81ea\u589e\u503c\u7684\u6700\u5c0f\u8a2d\u5b9a\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"redis%e8%87%aa%e5%a2%9e%e5%80%bc%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-SofbwHzERk\">Redis\u81ea\u589e\u503c\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u81ea\u589e\u503c\u901a\u5e38\u662f\u901a\u904e\u547d\u4ee4 <code>INCR<\/code> \u6216 <code>INCRBY<\/code> \u4f86\u5be6\u73fe\u7684\u3002\u9019\u4e9b\u547d\u4ee4\u53ef\u4ee5\u5c07\u6307\u5b9a\u9375\u7684\u6574\u6578\u503c\u589e\u52a01\u6216\u6307\u5b9a\u7684\u6578\u91cf\u3002\u5982\u679c\u8a72\u9375\u4e0d\u5b58\u5728\uff0cRedis\u6703\u81ea\u52d5\u5c07\u5176\u521d\u59cb\u5316\u70ba0\uff0c\u7136\u5f8c\u518d\u9032\u884c\u81ea\u589e\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e5%91%bd%e4%bb%a4%e7%a4%ba%e4%be%8b-SofbwHzERk\">\u57fa\u672c\u547d\u4ee4\u793a\u4f8b<\/h3>\n<pre><code>SET mykey 10\nINCR mykey\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u9996\u5148\u5c07\u9375 <code>mykey<\/code> \u8a2d\u7f6e\u70ba10\uff0c\u7136\u5f8c\u4f7f\u7528 <code>INCR<\/code> \u547d\u4ee4\u5c07\u5176\u503c\u589e\u52a01\uff0c\u6700\u7d42 <code>mykey<\/code> \u7684\u503c\u5c07\u8b8a\u70ba11\u3002<\/p>\n<h2 id=\"%e8%a8%ad%e5%ae%9a%e8%87%aa%e5%a2%9e%e6%9c%80%e5%b0%8f%e5%80%bc-SofbwHzERk\">\u8a2d\u5b9a\u81ea\u589e\u6700\u5c0f\u503c<\/h2>\n<p>\u5728\u67d0\u4e9b\u61c9\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u5c0d\u81ea\u589e\u503c\u8a2d\u7f6e\u6700\u5c0f\u503c\u9650\u5236\u3002\u96d6\u7136Redis\u672c\u8eab\u4e26\u4e0d\u63d0\u4f9b\u76f4\u63a5\u7684\u6700\u5c0f\u503c\u8a2d\u5b9a\u529f\u80fd\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u4e00\u4e9b\u908f\u8f2f\u4f86\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e5%af%a6%e7%8f%be%e6%9c%80%e5%b0%8f%e5%80%bc%e9%99%90%e5%88%b6-SofbwHzERk\">\u4f7f\u7528Lua\u8173\u672c\u5be6\u73fe\u6700\u5c0f\u503c\u9650\u5236<\/h3>\n<p>Redis\u652f\u6301Lua\u8173\u672c\uff0c\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u8907\u96dc\u7684\u908f\u8f2f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8bLua\u8173\u672c\uff0c\u7528\u65bc\u5be6\u73fe\u81ea\u589e\u503c\u7684\u6700\u5c0f\u8a2d\u5b9a\uff1a<\/p>\n<pre><code>local key = KEYS[1]\nlocal increment = tonumber(ARGV[1])\nlocal min_value = tonumber(ARGV[2])\n\nlocal current_value = tonumber(redis.call('GET', key) or 0)\nlocal new_value = current_value + increment\n\nif new_value &lt; min_value then\n    new_value = min_value\nend\n\nredis.call(&#039;SET&#039;, key, new_value)\nreturn new_value\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u8173\u672c\u4e2d\uff0c\u6211\u5011\u9996\u5148\u7372\u53d6\u7576\u524d\u9375\u7684\u503c\uff0c\u7136\u5f8c\u8a08\u7b97\u65b0\u7684\u503c\u3002\u5982\u679c\u65b0\u7684\u503c\u5c0f\u65bc\u8a2d\u5b9a\u7684\u6700\u5c0f\u503c\uff0c\u5247\u5c07\u5176\u8a2d\u7f6e\u70ba\u6700\u5c0f\u503c\u3002\u6700\u5f8c\uff0c\u6211\u5011\u5c07\u65b0\u7684\u503c\u5b58\u56deRedis\u4e2d\u3002<\/p>\n<h3 id=\"%e5%9f%b7%e8%a1%8clua%e8%85%b3%e6%9c%ac%e7%9a%84%e7%a4%ba%e4%be%8b-SofbwHzERk\">\u57f7\u884cLua\u8173\u672c\u7684\u793a\u4f8b<\/h3>\n<p>\u8981\u57f7\u884c\u4e0a\u8ff0Lua\u8173\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bRedis\u547d\u4ee4\uff1a<\/p>\n<pre><code>EVAL \"local key = KEYS[1] local increment = tonumber(ARGV[1]) local min_value = tonumber(ARGV[2]) local current_value = tonumber(redis.call('GET', key) or 0) local new_value = current_value + increment if new_value &lt; min_value then new_value = min_value end redis.call(&#039;SET&#039;, key, new_value) return new_value&quot; 1 mykey 5 10\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u547d\u4ee4\u4e2d\uff0c\u6211\u5011\u5c07 <code>mykey<\/code> \u7684\u503c\u589e\u52a05\uff0c\u4f46\u5982\u679c\u7d50\u679c\u5c0f\u65bc10\uff0c\u5247\u6700\u7d42\u503c\u5c07\u88ab\u8a2d\u7f6e\u70ba10\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-SofbwHzERk\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u9032\u884c\u81ea\u589e\u64cd\u4f5c\u6642\uff0c\u8003\u616e\u4f7f\u7528Redis\u7684\u4e8b\u52d9\u529f\u80fd\uff0c\u4ee5\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/li>\n<li><strong>\u76e3\u63a7\u6027\u80fd\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7Redis\u7684\u6027\u80fd\uff0c\u78ba\u4fdd\u81ea\u589e\u64cd\u4f5c\u4e0d\u6703\u5f71\u97ff\u6574\u9ad4\u7cfb\u7d71\u7684\u6548\u80fd\u3002<\/li>\n<li><strong>\u5408\u7406\u8a2d\u8a08\u9375\u540d\uff1a<\/strong>\u9078\u64c7\u6709\u610f\u7fa9\u7684\u9375\u540d\uff0c\u4ee5\u4fbf\u65bc\u7ba1\u7406\u548c\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SofbwHzERk\">\u7e3d\u7d50<\/h2>\n<p>\u5728Redis\u4e2d\u5be6\u73fe\u81ea\u589e\u503c\u7684\u6700\u5c0f\u8a2d\u5b9a\u96d6\u7136\u9700\u8981\u4e00\u4e9b\u984d\u5916\u7684\u908f\u8f2f\uff0c\u4f46\u901a\u904e\u4f7f\u7528Lua\u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u9748\u6d3b\u5730\u63a7\u5236\u81ea\u589e\u64cd\u4f5c\u7684\u884c\u70ba\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u6eff\u8db3\u696d\u52d9\u9700\u6c42\uff0c\u9084\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u7279\u5225\u662f\u5728\u9999\u6e2f\u9019\u6a23\u7684\u5e02\u5834\u4e2d\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u63d0\u4f9b\u4e86\u512a\u8cea\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u9069\u5408\u5404\u985e\u578b\u7684\u61c9\u7528\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u8a2d\u5b9a\u81ea\u589e\u503c\u7684\u6700\u5c0f\u503c\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\u512a\u5316\uff0c\u63d0\u5347\u61c9\u7528\u6548\u80fd\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-183140","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183140","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=183140"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183140\/revisions"}],"predecessor-version":[{"id":183141,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183140\/revisions\/183141"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}