{"id":61591,"date":"2024-10-13T12:13:17","date_gmt":"2024-10-13T04:13:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61591\/"},"modified":"2024-10-13T12:13:18","modified_gmt":"2024-10-13T04:13:18","slug":"how-to-estimate-a-database-size-%e5%a6%82%e4%bd%95%e4%bc%b0%e7%ae%97%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%ef%bc%9f-%e5%a6%82%e4%bd%95%e4%bc%b0%e7%ae%97%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61591\/","title":{"rendered":"How to Estimate a Database Size? \u5982\u4f55\u4f30\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\uff1f (\u5982\u4f55\u4f30\u7b97\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bc%b0%e7%ae%97%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%b9%e9%87%8f%ef%bc%9f-AXeiZYMUil\">\u5982\u4f55\u4f30\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6b63\u78ba\u4f30\u7b97\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u5c0d\u65bc\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u4f01\u696d\u7d1a\u61c9\u7528\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u7684\u5927\u5c0f\u53ef\u4ee5\u5e6b\u52a9\u60a8\u9078\u64c7\u5408\u9069\u7684\u786c\u9ad4\u8cc7\u6e90\uff0c\u907f\u514d\u672a\u4f86\u7684\u6027\u80fd\u74f6\u9838\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u4f30\u7b97\u6578\u64da\u5eab\u7684\u5bb9\u91cf\u3002<\/p>\n<h2 id=\"1-%e7%a2%ba%e5%ae%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%b5%90%e6%a7%8b-AXeiZYMUil\">1. \u78ba\u5b9a\u6578\u64da\u5eab\u7684\u7d50\u69cb<\/h2>\n<p>\u5728\u4f30\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u6578\u64da\u5eab\u7684\u7d50\u69cb\u3002\u9019\u5305\u62ec\u8868\u7684\u6578\u91cf\u3001\u6bcf\u500b\u8868\u7684\u5217\u6578\u3001\u6578\u64da\u985e\u578b\u4ee5\u53ca\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u5927\u81f4\u5927\u5c0f\uff1a<\/p>\n<ul>\n<li><code>INT<\/code>\uff1a4 bytes<\/li>\n<li><code>BIGINT<\/code>\uff1a8 bytes<\/li>\n<li><code>VARCHAR(n)<\/code>\uff1an bytes + 1 or 2 bytes (\u53d6\u6c7a\u65bcn\u7684\u5927\u5c0f)<\/li>\n<li><code>TEXT<\/code>\uff1a\u6700\u591a65535 bytes<\/li>\n<li><code>DATETIME<\/code>\uff1a8 bytes<\/li>\n<\/ul>\n<p>\u4e86\u89e3\u9019\u4e9b\u6578\u64da\u985e\u578b\u7684\u5927\u5c0f\u53ef\u4ee5\u5e6b\u52a9\u60a8\u8a08\u7b97\u6bcf\u500b\u8868\u7684\u9810\u4f30\u5927\u5c0f\u3002<\/p>\n<h2 id=\"2-%e8%a8%88%e7%ae%97%e6%af%8f%e5%80%8b%e8%a1%a8%e7%9a%84%e5%a4%a7%e5%b0%8f-AXeiZYMUil\">2. \u8a08\u7b97\u6bcf\u500b\u8868\u7684\u5927\u5c0f<\/h2>\n<p>\u8a08\u7b97\u6bcf\u500b\u8868\u7684\u5927\u5c0f\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\uff1a<\/p>\n<pre><code>\u8868\u5927\u5c0f = (\u6bcf\u884c\u5927\u5c0f) * (\u884c\u6578) + (\u7d22\u5f15\u5927\u5c0f)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c\u6bcf\u884c\u5927\u5c0f\u662f\u6839\u64da\u8868\u4e2d\u6240\u6709\u5217\u7684\u5927\u5c0f\u9032\u884c\u8a08\u7b97\u7684\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u8868\u6709\u4e09\u500b\u5217\uff0c\u5206\u5225\u70ba<code>INT<\/code>\u3001<code>VARCHAR(100)<\/code>\u548c<code>DATETIME<\/code>\uff0c\u5247\u6bcf\u884c\u7684\u5927\u5c0f\u70ba\uff1a<\/p>\n<pre><code>\u6bcf\u884c\u5927\u5c0f = 4 + 100 + 8 = 112 bytes<\/code><\/pre>\n<p>\u5982\u679c\u8a72\u8868\u67091000\u884c\uff0c\u5247\u8868\u7684\u5927\u5c0f\u70ba\uff1a<\/p>\n<pre><code>\u8868\u5927\u5c0f = 112 * 1000 = 112000 bytes<\/code><\/pre>\n<h2 id=\"3-%e8%80%83%e6%85%ae%e7%b4%a2%e5%bc%95%e7%9a%84%e5%bd%b1%e9%9f%bf-AXeiZYMUil\">3. \u8003\u616e\u7d22\u5f15\u7684\u5f71\u97ff<\/h2>\n<p>\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u5f71\u97ff\u6578\u64da\u5eab\u7684\u5927\u5c0f\u3002\u6bcf\u500b\u7d22\u5f15\u90fd\u6703\u4f54\u7528\u984d\u5916\u7684\u7a7a\u9593\uff0c\u56e0\u6b64\u5728\u8a08\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\u6642\uff0c\u5fc5\u9808\u5c07\u7d22\u5f15\u7684\u5927\u5c0f\u7d0d\u5165\u8003\u616e\u3002\u7d22\u5f15\u7684\u5927\u5c0f\u53d6\u6c7a\u65bc\u7d22\u5f15\u7684\u985e\u578b\u548c\u6240\u5305\u542b\u7684\u5217\u3002\u4f8b\u5982\uff0cB-tree\u7d22\u5f15\u7684\u5927\u5c0f\u901a\u5e38\u662f\u57fa\u65bc\u7d22\u5f15\u5217\u7684\u6578\u64da\u985e\u578b\u548c\u884c\u6578\u9032\u884c\u8a08\u7b97\u7684\u3002<\/p>\n<h2 id=\"4-%e9%a0%90%e6%b8%ac%e6%9c%aa%e4%be%86%e5%a2%9e%e9%95%b7-AXeiZYMUil\">4. \u9810\u6e2c\u672a\u4f86\u589e\u9577<\/h2>\n<p>\u5728\u4f30\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\u6642\uff0c\u9084\u9700\u8981\u8003\u616e\u672a\u4f86\u7684\u589e\u9577\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5206\u6790\u904e\u53bb\u7684\u6578\u64da\u589e\u9577\u8da8\u52e2\u4f86\u5be6\u73fe\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u4f86\u9810\u6e2c\u672a\u4f86\u7684\u6578\u64da\u5eab\u5927\u5c0f\uff1a<\/p>\n<pre><code>\u672a\u4f86\u5927\u5c0f = \u7576\u524d\u5927\u5c0f + (\u589e\u9577\u7387 * \u7576\u524d\u5927\u5c0f * \u5e74\u6578)<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u7576\u524d\u6578\u64da\u5eab\u5927\u5c0f\u70ba1GB\uff0c\u5e74\u589e\u9577\u7387\u70ba20%\uff0c\u9810\u6e2c\u672a\u4f865\u5e74\u7684\u5927\u5c0f\u70ba\uff1a<\/p>\n<pre><code>\u672a\u4f86\u5927\u5c0f = 1GB + (0.2 * 1GB * 5) = 2GB<\/code><\/pre>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8%e5%b7%a5%e5%85%b7%e9%80%b2%e8%a1%8c%e4%bc%b0%e7%ae%97-AXeiZYMUil\">5. \u4f7f\u7528\u5de5\u5177\u9032\u884c\u4f30\u7b97<\/h2>\n<p>\u9664\u4e86\u624b\u52d5\u8a08\u7b97\uff0c\u9084\u6709\u8a31\u591a\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u60a8\u4f30\u7b97\u6578\u64da\u5eab\u7684\u5927\u5c0f\u3002\u4f8b\u5982\uff0c\u8a31\u591a\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u63d0\u4f9b\u4e86\u5167\u5efa\u7684\u5831\u544a\u529f\u80fd\uff0c\u53ef\u4ee5\u986f\u793a\u7576\u524d\u6578\u64da\u5eab\u7684\u5927\u5c0f\u548c\u7d50\u69cb\u3002\u9019\u4e9b\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u60a8\u66f4\u5feb\u5730\u7372\u5f97\u6e96\u78ba\u7684\u4f30\u7b97\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-AXeiZYMUil\">\u7e3d\u7d50<\/h2>\n<p>\u4f30\u7b97\u6578\u64da\u5eab\u5bb9\u91cf\u662f\u4e00\u500b\u91cd\u8981\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u5c0d\u6578\u64da\u7d50\u69cb\u3001\u884c\u6578\u3001\u7d22\u5f15\u4ee5\u53ca\u672a\u4f86\u589e\u9577\u7684\u5168\u9762\u8003\u91cf\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a08\u7b97\u548c\u9810\u6e2c\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u670d\u52d9\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn effective methods to estimate database size, including data types, growth factors, and best practices for accurate calculations.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61591","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61591","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61591"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61591\/revisions"}],"predecessor-version":[{"id":61592,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61591\/revisions\/61592"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}