{"id":158871,"date":"2024-11-03T05:39:58","date_gmt":"2024-11-02T21:39:58","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158871\/"},"modified":"2024-11-03T05:39:59","modified_gmt":"2024-11-02T21:39:59","slug":"%e7%ae%a1%e7%90%86%e5%a4%a7%e5%9e%8b-postgres-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%b8%89%e5%80%8b%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158871\/","title":{"rendered":"\u7ba1\u7406\u5927\u578b Postgres \u6578\u64da\u5eab\u7684\u4e09\u500b\u6280\u5de7"},"content":{"rendered":"<h1 id=\"%e7%ae%a1%e7%90%86%e5%a4%a7%e5%9e%8b-postgres-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%b8%89%e5%80%8b%e6%8a%80%e5%b7%a7-ofUJCXxGjS\">\u7ba1\u7406\u5927\u578b Postgres \u6578\u64da\u5eab\u7684\u4e09\u500b\u6280\u5de7<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u898f\u6a21\u7684\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u7ba1\u7406\u5927\u578b PostgreSQL \u6578\u64da\u5eab\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u5177\u6311\u6230\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e09\u500b\u6709\u6548\u7684\u6280\u5de7\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u5927\u578b PostgreSQL \u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"1-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-ofUJCXxGjS\">1. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ff\u5927\u578b\u6578\u64da\u5eab\u6548\u7387\u7684\u95dc\u9375\u56e0\u7d20\u3002\u70ba\u4e86\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u60a8\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002\u78ba\u4fdd\u5c0d\u7d93\u5e38\u67e5\u8a62\u7684\u5217\u5efa\u7acb\u7d22\u5f15\uff0c\u7279\u5225\u662f\u90a3\u4e9b\u7528\u65bc\u904e\u6ffe\u548c\u6392\u5e8f\u7684\u5217\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u7528\u6236\u4fe1\u606f\u7684\u8868\uff0c\u60a8\u53ef\u4ee5\u9019\u6a23\u5275\u5efa\u7d22\u5f15\uff1a<\/li>\n<pre><code>CREATE INDEX idx_users_email ON users(email);<\/code><\/pre>\n<li><strong>\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff1a<\/strong>\u4f7f\u7528 <code>EXPLAIN<\/code> \u547d\u4ee4\u4f86\u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u9019\u53ef\u4ee5\u5e6b\u52a9\u60a8\u8b58\u5225\u6027\u80fd\u74f6\u9838\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>EXPLAIN SELECT * FROM users WHERE email = 'example@example.com';<\/code><\/pre>\n<li><strong>\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u67e5\u8a62\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316\u67e5\u8a62\uff0c\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u67e5\u8a62\uff0c\u4e26\u8003\u616e\u4f7f\u7528\u7de9\u5b58\u4f86\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-ofUJCXxGjS\">2. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n<p>\u5b9a\u671f\u7dad\u8b77\u662f\u78ba\u4fdd\u5927\u578b PostgreSQL \u6578\u64da\u5eab\u7a69\u5b9a\u904b\u884c\u7684\u53e6\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7dad\u8b77\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u57f7\u884c VACUUM \u548c ANALYZE\uff1a<\/strong>\u9019\u5169\u500b\u547d\u4ee4\u53ef\u4ee5\u5e6b\u52a9\u6e05\u7406\u6b7b\u5143\u7d44\u4e26\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/li>\n<pre><code>VACUUM ANALYZE;<\/code><\/pre>\n<li><strong>\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff1a<\/strong>\u4f7f\u7528\u5de5\u5177\u5982 <code>pg_stat_statements<\/code> \u4f86\u76e3\u63a7\u67e5\u8a62\u6027\u80fd\uff0c\u4e26\u8b58\u5225\u9700\u8981\u512a\u5316\u7684\u67e5\u8a62\u3002<\/li>\n<li><strong>\u5b9a\u671f\u5099\u4efd\uff1a<\/strong>\u78ba\u4fdd\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6578\u64da\u4e1f\u5931\u3002\u53ef\u4ee5\u4f7f\u7528 <code>pg_dump<\/code> \u547d\u4ee4\u9032\u884c\u5099\u4efd\uff1a<\/li>\n<pre><code>pg_dump mydatabase &gt; mydatabase_backup.sql;<\/code><\/pre>\n<\/ul>\n<h2 id=\"3-%e5%88%86%e5%8d%80%e5%92%8c%e5%88%86%e7%89%87%e6%95%b8%e6%93%9a-ofUJCXxGjS\">3. \u5206\u5340\u548c\u5206\u7247\u6578\u64da<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u55ae\u4e00\u8868\u7684\u6027\u80fd\u53ef\u80fd\u6703\u4e0b\u964d\u3002\u5206\u5340\u548c\u5206\u7247\u662f\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u7684\u6709\u6548\u65b9\u6cd5\u3002<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5206\u5340\uff1a<\/strong>\u5c07\u5927\u578b\u8868\u5206\u6210\u591a\u500b\u5c0f\u8868\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u65e5\u671f\u5c07\u6578\u64da\u5206\u5340\uff1a<\/li>\n<pre><code>CREATE TABLE orders_y2023 PARTITION OF orders FOR VALUES FROM ('2023-01-01') TO ('2024-01-01');<\/code><\/pre>\n<li><strong>\u6578\u64da\u5206\u7247\uff1a<\/strong>\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u6578\u64da\u5eab\u5be6\u4f8b\u4e2d\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u53ef\u64f4\u5c55\u6027\u548c\u6027\u80fd\u3002\u9019\u901a\u5e38\u9700\u8981\u61c9\u7528\u5c64\u7684\u652f\u6301\u4f86\u7ba1\u7406\u6578\u64da\u7684\u8def\u7531\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ofUJCXxGjS\">\u7e3d\u7d50<\/h2>\n<p>\u7ba1\u7406\u5927\u578b PostgreSQL \u6578\u64da\u5eab\u9700\u8981\u8b39\u614e\u7684\u898f\u5283\u548c\u6301\u7e8c\u7684\u7dad\u8b77\u3002\u901a\u904e\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3001\u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab\u4ee5\u53ca\u5be6\u65bd\u6578\u64da\u5206\u5340\u548c\u5206\u7247\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6548\u7387\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u548c\u53ef\u9760\u6027\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u7ba1\u7406\u5927\u578b Postgres \u6578\u64da\u5eab\u7684\u4e09\u500b\u6280\u5de7\uff0c\u63d0\u5347\u6027\u80fd\u3001\u512a\u5316\u67e5\u8a62\u548c\u78ba\u4fdd\u6578\u64da\u5b89\u5168\uff0c\u52a9\u60a8\u9ad8\u6548\u904b\u884c\u6578\u64da\u5eab\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-158871","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158871","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=158871"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158871\/revisions"}],"predecessor-version":[{"id":158872,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158871\/revisions\/158872"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}