{"id":184362,"date":"2024-11-10T12:35:21","date_gmt":"2024-11-10T04:35:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/184362\/"},"modified":"2024-11-10T12:35:22","modified_gmt":"2024-11-10T04:35:22","slug":"%e4%bd%bf%e7%94%a8redis%e7%b7%a9%e5%ad%98%e5%84%aa%e5%8c%96join%e6%9f%a5%e8%a9%a2%ef%bc%88redis%e7%b7%a9%e5%ad%98join%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/184362\/","title":{"rendered":"\u4f7f\u7528Redis\u7de9\u5b58\u512a\u5316JOIN\u67e5\u8a62\uff08redis\u7de9\u5b58join\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8redis%e7%b7%a9%e5%ad%98%e5%84%aa%e5%8c%96join%e6%9f%a5%e8%a9%a2%ef%bc%88redis%e7%b7%a9%e5%ad%98join%ef%bc%89-zIoGBJcbCL\">\u4f7f\u7528Redis\u7de9\u5b58\u512a\u5316JOIN\u67e5\u8a62\uff08redis\u7de9\u5b58join\uff09<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u61c9\u7528\u4e2d\uff0cJOIN\u67e5\u8a62\u662f\u975e\u5e38\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u76f8\u95dc\u6578\u64da\u6642\u3002\u7136\u800c\uff0cJOIN\u67e5\u8a62\u7684\u6027\u80fd\u5f80\u5f80\u6703\u53d7\u5230\u6578\u64da\u91cf\u589e\u9577\u7684\u5f71\u97ff\uff0c\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u8a31\u591a\u958b\u767c\u8005\u9078\u64c7\u4f7f\u7528Redis\u4f5c\u70ba\u7de9\u5b58\u5c64\uff0c\u4ee5\u512a\u5316JOIN\u67e5\u8a62\u7684\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u7de9\u5b58\u4f86\u512a\u5316JOIN\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afjoin%e6%9f%a5%e8%a9%a2%ef%bc%9f-zIoGBJcbCL\">\u4ec0\u9ebc\u662fJOIN\u67e5\u8a62\uff1f<\/h2>\n<p>JOIN\u67e5\u8a62\u662fSQL\u4e2d\u7528\u4f86\u5f9e\u5169\u500b\u6216\u591a\u500b\u8868\u4e2d\u6839\u64da\u76f8\u95dc\u5217\u63d0\u53d6\u6578\u64da\u7684\u64cd\u4f5c\u3002\u5e38\u898b\u7684JOIN\u985e\u578b\u5305\u62ecINNER JOIN\u3001LEFT JOIN\u3001RIGHT JOIN\u548cFULL JOIN\u3002\u9019\u4e9b\u67e5\u8a62\u5728\u6578\u64da\u5eab\u4e2d\u57f7\u884c\u6642\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u6578\u64da\u91cf\u5927\u800c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<h2 id=\"redis%e7%b0%a1%e4%bb%8b-zIoGBJcbCL\">Redis\u7c21\u4ecb<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u7528\u65bc\u7de9\u5b58\u548c\u6578\u64da\u5b58\u5132\u3002\u5b83\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u4e26\u4e14\u5177\u6709\u6301\u4e45\u5316\u529f\u80fd\u3002\u7531\u65bc\u5176\u5feb\u901f\u7684\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\uff0cRedis\u6210\u70ba\u4e86\u512a\u5316\u6578\u64da\u5eab\u67e5\u8a62\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e4%bd%bf%e7%94%a8redis%e7%b7%a9%e5%ad%98join%e6%9f%a5%e8%a9%a2%ef%bc%9f-zIoGBJcbCL\">\u70ba\u4ec0\u9ebc\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62\uff1f<\/h2>\n<p>\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62\u7684\u4e3b\u8981\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff1a<\/strong>\u901a\u904e\u5c07JOIN\u67e5\u8a62\u7684\u7d50\u679c\u7de9\u5b58\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u67e5\u8a62\u6b21\u6578\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6578\u64da\u5eab\u8ca0\u64d4\uff1a<\/strong>\u5c07\u983b\u7e41\u67e5\u8a62\u7684\u7d50\u679c\u7de9\u5b58\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\uff0c\u964d\u4f4e\u8cc7\u6e90\u6d88\u8017\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u7de9\u5b58\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8redis%e7%b7%a9%e5%ad%98join%e6%9f%a5%e8%a9%a2-zIoGBJcbCL\">\u5982\u4f55\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5047\u8a2d\u6709\u5169\u500b\u8868\uff1ausers\u548corders\nSELECT users.name, orders.amount\nFROM users\nJOIN orders ON users.id = orders.user_id\nWHERE users.id = 1;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u5f9eusers\u8868\u548corders\u8868\u4e2d\u63d0\u53d6\u7528\u6236\u540d\u7a31\u548c\u8a02\u55ae\u91d1\u984d\u3002\u70ba\u4e86\u512a\u5316\u9019\u500b\u67e5\u8a62\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u7d50\u679c\u7de9\u5b58\u5728Redis\u4e2d\uff1a<\/p>\n<pre><code>-- \u4f7f\u7528Redis\u7de9\u5b58\u67e5\u8a62\u7d50\u679c\nlocal redis = require 'redis'\nlocal client = redis.connect('127.0.0.1', 6379)\n\nlocal cacheKey = 'user:1:orders'\nlocal cachedResult = client:get(cacheKey)\n\nif cachedResult then\n    return cachedResult\nelse\n    local result = db.query(\"SELECT users.name, orders.amount FROM users JOIN orders ON users.id = orders.user_id WHERE users.id = 1\")\n    client:set(cacheKey, result)\n    return result\nend\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u6aa2\u67e5Redis\u4e2d\u662f\u5426\u5df2\u7d93\u5b58\u5728\u7de9\u5b58\u7684\u7d50\u679c\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\u7de9\u5b58\u7684\u7d50\u679c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u57f7\u884cJOIN\u67e5\u8a62\u4e26\u5c07\u7d50\u679c\u5b58\u5165Redis\u4e2d\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-zIoGBJcbCL\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62\u6642\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593\uff1a<\/strong>\u6839\u64da\u6578\u64da\u7684\u8b8a\u5316\u983b\u7387\u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6642\u6548\u6027\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5408\u9069\u7684\u7de9\u5b58\u9375\uff1a<\/strong>\u8a2d\u8a08\u6e05\u6670\u4e14\u6613\u65bc\u7406\u89e3\u7684\u7de9\u5b58\u9375\uff0c\u4ee5\u4fbf\u65bc\u7ba1\u7406\u548c\u67e5\u8a62\u3002<\/li>\n<li><strong>\u76e3\u63a7\u7de9\u5b58\u547d\u4e2d\u7387\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7\u7de9\u5b58\u7684\u547d\u4e2d\u7387\uff0c\u4ee5\u8a55\u4f30\u7de9\u5b58\u7b56\u7565\u7684\u6709\u6548\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zIoGBJcbCL\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u7de9\u5b58JOIN\u67e5\u8a62\u662f\u4e00\u7a2e\u6709\u6548\u7684\u512a\u5316\u7b56\u7565\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u4e26\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002\u901a\u904e\u5408\u7406\u8a2d\u8a08\u7de9\u5b58\u7b56\u7565\u548c\u76e3\u63a7\u7de9\u5b58\u6548\u679c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u4e2d\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u9ad4\u9a57\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u63d0\u5347\u60a8\u7684\u61c9\u7528\u6027\u80fd\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\u642d\u5efa\u60a8\u7684Redis\u7de9\u5b58\u7cfb\u7d71\uff0c\u5c07\u6703\u662f\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Redis\u7de9\u5b58\u512a\u5316JOIN\u67e5\u8a62\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u6548\u7387\uff0c\u6e1b\u5c11\u6578\u64da\u5eab\u8ca0\u64d4\uff0c\u5be6\u73fe\u5feb\u901f\u97ff\u61c9\u548c\u9ad8\u6027\u80fd\u61c9\u7528\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-184362","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184362","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=184362"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184362\/revisions"}],"predecessor-version":[{"id":184363,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184362\/revisions\/184363"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=184362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=184362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=184362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}