{"id":173531,"date":"2024-11-07T18:48:21","date_gmt":"2024-11-07T10:48:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173531\/"},"modified":"2024-11-07T18:48:22","modified_gmt":"2024-11-07T10:48:22","slug":"%e5%a6%82%e4%bd%95%e8%a8%88%e7%ae%97%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%ae%b9%e9%87%8f%ef%bc%9f-%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%e8%a8%88%e7%ae%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173531\/","title":{"rendered":"\u5982\u4f55\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\uff1f (\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u8a08\u7b97)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%a8%88%e7%ae%97%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%ae%b9%e9%87%8f%ef%bc%9f-%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%e8%a8%88%e7%ae%97-ffYTVENmye\">\u5982\u4f55\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\uff1f (\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u8a08\u7b97)<\/h1>\n<p>\u5167\u5b58\u6578\u64da\u5eab\uff08In-Memory Database\uff09\u662f\u4e00\u7a2e\u5c07\u6578\u64da\u5b58\u5132\u5728\u5167\u5b58\u4e2d\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u9019\u4f7f\u5f97\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\u5927\u5e45\u63d0\u5347\u3002\u96a8\u8457\u5927\u6578\u64da\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u9700\u6c42\u7684\u589e\u52a0\uff0c\u5167\u5b58\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8d8a\u4f86\u8d8a\u666e\u904d\u3002\u7136\u800c\uff0c\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\uff0c\u56e0\u70ba\u5b83\u76f4\u63a5\u5f71\u97ff\u5230\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u6210\u672c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%e8%a8%88%e7%ae%97%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-ffYTVENmye\">\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u8a08\u7b97\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u6642\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u6578\u64da\u7684\u7d50\u69cb\u548c\u5927\u5c0f\u3002\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u4e3b\u8981\u53d6\u6c7a\u65bc\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\uff1a<\/strong>\u4e0d\u540c\u7684\u6578\u64da\u985e\u578b\u4f54\u7528\u7684\u5167\u5b58\u5927\u5c0f\u4e0d\u540c\u3002\u4f8b\u5982\uff0c\u6574\u6578\uff08Integer\uff09\u901a\u5e38\u4f54\u75284\u500b\u5b57\u7bc0\uff0c\u800c\u6d6e\u9ede\u6578\uff08Float\uff09\u5247\u4f54\u75288\u500b\u5b57\u7bc0\u3002<\/li>\n<li><strong>\u6578\u64da\u884c\u6578\uff1a<\/strong>\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u7684\u884c\u6578\u76f4\u63a5\u5f71\u97ff\u7e3d\u5bb9\u91cf\u3002\u884c\u6578\u8d8a\u591a\uff0c\u6240\u9700\u7684\u5167\u5b58\u8d8a\u5927\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff1a<\/strong>\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\uff0c\u4f46\u4e5f\u6703\u4f54\u7528\u984d\u5916\u7684\u5167\u5b58\u3002\u9700\u8981\u8003\u616e\u7d22\u5f15\u7684\u5927\u5c0f\u548c\u6578\u91cf\u3002<\/li>\n<li><strong>\u5176\u4ed6\u958b\u92b7\uff1a<\/strong>\u5305\u62ec\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u672c\u8eab\u7684\u958b\u92b7\uff0c\u5982\u7de9\u5b58\u3001\u65e5\u8a8c\u7b49\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a8%88%e7%ae%97%e5%85%a7%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%e7%9a%84%e6%ad%a5%e9%a9%9f-ffYTVENmye\">\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u7684\u5177\u9ad4\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e5%ae%9a%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-ffYTVENmye\">1. \u78ba\u5b9a\u6578\u64da\u7d50\u69cb<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u78ba\u5b9a\u6578\u64da\u5eab\u4e2d\u6bcf\u500b\u8868\u7684\u7d50\u69cb\uff0c\u5305\u62ec\u6bcf\u500b\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u7528\u6236\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre>\nCREATE TABLE users (\n    id INT,\n    name VARCHAR(100),\n    email VARCHAR(100),\n    created_at DATETIME\n);\n<\/pre>\n<h3 id=\"2-%e8%a8%88%e7%ae%97%e6%af%8f%e8%a1%8c%e7%9a%84%e5%a4%a7%e5%b0%8f-ffYTVENmye\">2. \u8a08\u7b97\u6bcf\u884c\u7684\u5927\u5c0f<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u8a08\u7b97\u6bcf\u884c\u7684\u5927\u5c0f\u3002\u6839\u64da\u4e0a\u9762\u7684\u8868\u7d50\u69cb\uff0c\u8a08\u7b97\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>id: 4 bytes (\u6574\u6578)<\/li>\n<li>name: 100 bytes (\u5b57\u7b26\u578b)<\/li>\n<li>email: 100 bytes (\u5b57\u7b26\u578b)<\/li>\n<li>created_at: 8 bytes (\u65e5\u671f\u6642\u9593\u578b)<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u6bcf\u884c\u7684\u5927\u5c0f\u70ba\uff1a<\/p>\n<p><code>4 + 100 + 100 + 8 = 212 bytes<\/code><\/p>\n<h3 id=\"3-%e8%a8%88%e7%ae%97%e7%b8%bd%e8%a1%8c%e6%95%b8-ffYTVENmye\">3. \u8a08\u7b97\u7e3d\u884c\u6578<\/h3>\n<p>\u5047\u8a2d\u7528\u6236\u8868\u4e2d\u670910,000\u884c\u6578\u64da\uff0c\u90a3\u9ebc\u7e3d\u5927\u5c0f\u70ba\uff1a<\/p>\n<p><code>212 bytes\/row * 10,000 rows = 2,120,000 bytes \u2248 2.12 MB<\/code><\/p>\n<h3 id=\"4-%e8%80%83%e6%85%ae%e7%b4%a2%e5%bc%95%e5%92%8c%e5%85%b6%e4%bb%96%e9%96%8b%e9%8a%b7-ffYTVENmye\">4. \u8003\u616e\u7d22\u5f15\u548c\u5176\u4ed6\u958b\u92b7<\/h3>\n<p>\u5982\u679c\u5c0d\u7528\u6236\u8868\u7684id\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff0c\u5047\u8a2d\u7d22\u5f15\u4f54\u7528\u7684\u5167\u5b58\u70ba1.5\u500d\u65bc\u6578\u64da\u5927\u5c0f\uff0c\u90a3\u9ebc\u7d22\u5f15\u7684\u5927\u5c0f\u70ba\uff1a<\/p>\n<p><code>2.12 MB * 1.5 = 3.18 MB<\/code><\/p>\n<p>\u56e0\u6b64\uff0c\u7e3d\u5167\u5b58\u9700\u6c42\u70ba\uff1a<\/p>\n<p><code>2.12 MB + 3.18 MB = 5.30 MB<\/code><\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e4%b8%ad%e7%9a%84%e8%80%83%e9%87%8f-ffYTVENmye\">\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u9084\u9700\u8981\u8003\u616e\u5230\u6578\u64da\u7684\u589e\u9577\u3001\u5099\u4efd\u9700\u6c42\u4ee5\u53ca\u7cfb\u7d71\u7684\u5197\u9918\u8a2d\u8a08\u3002\u5efa\u8b70\u5728\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u5bb9\u91cf\u6642\uff0c\u9810\u7559\u4e00\u5b9a\u7684\u7a7a\u9593\u4ee5\u61c9\u5c0d\u672a\u4f86\u7684\u64f4\u5c55\u9700\u6c42\u3002\u6b64\u5916\uff0c\u9078\u64c7\u5408\u9069\u7684\u5167\u5b58\u6578\u64da\u5eab\u6280\u8853\u4e5f\u80fd\u5f71\u97ff\u6027\u80fd\u548c\u8cc7\u6e90\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-ffYTVENmye\">\u7d50\u8ad6<\/h2>\n<p>\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\uff0c\u6d89\u53ca\u5230\u6578\u64da\u7d50\u69cb\u3001\u884c\u6578\u3001\u7d22\u5f15\u53ca\u5176\u4ed6\u958b\u92b7\u7684\u7d9c\u5408\u8003\u91cf\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u66f4\u6e96\u78ba\u5730\u9810\u6e2c\u5167\u5b58\u9700\u6c42\uff0c\u5f9e\u800c\u70ba\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u6253\u4e0b\u826f\u597d\u7684\u57fa\u790e\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u8a08\u7b97\u5167\u5b58\u6578\u64da\u5eab\u7684\u5bb9\u91cf\uff0c\u5305\u62ec\u6578\u64da\u5927\u5c0f\u3001\u7d22\u5f15\u548c\u7de9\u5b58\u9700\u6c42\uff0c\u78ba\u4fdd\u9ad8\u6548\u6027\u80fd\u548c\u8cc7\u6e90\u5229\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-173531","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173531","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=173531"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173531\/revisions"}],"predecessor-version":[{"id":173532,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173531\/revisions\/173532"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}