{"id":163845,"date":"2024-11-05T02:54:24","date_gmt":"2024-11-04T18:54:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163845\/"},"modified":"2024-11-05T02:54:25","modified_gmt":"2024-11-04T18:54:25","slug":"%e8%a7%a3%e6%b1%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a9%ba%e9%96%93%e9%81%8e%e5%a4%a7%e5%95%8f%e9%a1%8c%e7%9a%84%e6%9c%89%e6%95%88%e6%96%b9%e6%b3%95-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bd%94%e7%94%a8%e7%a9%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163845\/","title":{"rendered":"\u89e3\u6c7a\u6578\u64da\u5eab\u7a7a\u9593\u904e\u5927\u554f\u984c\u7684\u6709\u6548\u65b9\u6cd5 (\u6578\u64da\u5eab\u4f54\u7528\u7a7a\u9593\u904e\u5927)"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a9%ba%e9%96%93%e9%81%8e%e5%a4%a7%e5%95%8f%e9%a1%8c%e7%9a%84%e6%9c%89%e6%95%88%e6%96%b9%e6%b3%95-BLAfOclSus\">\u89e3\u6c7a\u6578\u64da\u5eab\u7a7a\u9593\u904e\u5927\u554f\u984c\u7684\u6709\u6548\u65b9\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u96a8\u8457\u696d\u52d9\u7684\u589e\u9577\uff0c\u6578\u64da\u5eab\u7684\u5927\u5c0f\u4e5f\u96a8\u4e4b\u589e\u52a0\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3001\u5099\u4efd\u6642\u9593\u5ef6\u9577\u4ee5\u53ca\u5b58\u5132\u6210\u672c\u4e0a\u5347\u7b49\u554f\u984c\u3002\u56e0\u6b64\uff0c\u89e3\u6c7a\u6578\u64da\u5eab\u7a7a\u9593\u904e\u5927\u7684\u554f\u984c\u6210\u70ba\u4e86\u8a31\u591a\u4f01\u696d\u9762\u81e8\u7684\u4e00\u500b\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u7a7a\u9593\u3002<\/p>\n<h2 id=\"1-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a-BLAfOclSus\">1. \u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da<\/h2>\n<p>\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u4f8b\u5982\u904e\u671f\u7684\u8a18\u9304\u3001\u6e2c\u8a66\u6578\u64da\u6216\u91cd\u8907\u7684\u6578\u64da\u3002\u5b9a\u671f\u9032\u884c\u6578\u64da\u6e05\u7406\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u5927\u5c0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6e05\u7406\u6578\u64da\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 SQL \u67e5\u8a62\u627e\u51fa\u904e\u671f\u7684\u6578\u64da\u4e26\u522a\u9664\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\uff0c\u53ef\u4ee5\u522a\u9664\u8d85\u904e\u4e00\u5e74\u672a\u88ab\u8a2a\u554f\u7684\u8a02\u55ae\u8a18\u9304\uff1a<\/li>\n<pre><code>DELETE FROM orders WHERE last_accessed &lt; NOW() - INTERVAL 1 YEAR;<\/code><\/pre>\n<li>\u5b9a\u671f\u6aa2\u67e5\u548c\u522a\u9664\u91cd\u8907\u7684\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528 GROUP BY \u548c HAVING \u5b50\u53e5\u4f86\u8b58\u5225\u91cd\u8907\u9805\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%a3%93%e7%b8%ae%e6%8a%80%e8%a1%93-BLAfOclSus\">2. \u4f7f\u7528\u6578\u64da\u58d3\u7e2e\u6280\u8853<\/h2>\n<p>\u6578\u64da\u58d3\u7e2e\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6e1b\u5c11\u6578\u64da\u5eab\u5927\u5c0f\u7684\u65b9\u6cd5\u3002\u8a31\u591a\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u90fd\u63d0\u4f9b\u4e86\u5167\u5efa\u7684\u6578\u64da\u58d3\u7e2e\u529f\u80fd\u3002\u901a\u904e\u58d3\u7e2e\u6578\u64da\uff0c\u53ef\u4ee5\u5728\u4e0d\u640d\u5931\u6578\u64da\u5b8c\u6574\u6027\u7684\u60c5\u6cc1\u4e0b\uff0c\u986f\u8457\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u7684\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 InnoDB \u8868\u7684\u58d3\u7e2e\u529f\u80fd\uff1a<\/p>\n<pre><code>ALTER TABLE my_table ROW_FORMAT=COMPRESSED;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u78c1\u789f\u7a7a\u9593\u7684\u4f7f\u7528\uff0c\u4e26\u63d0\u9ad8 I\/O \u6027\u80fd\u3002<\/p>\n<h2 id=\"3-%e5%84%aa%e5%8c%96%e7%b4%a2%e5%bc%95-BLAfOclSus\">3. \u512a\u5316\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u6578\u64da\u5eab\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\uff0c\u4f46\u904e\u591a\u6216\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\u6703\u4f54\u7528\u5927\u91cf\u7a7a\u9593\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316\u7d22\u5f15\u53ef\u4ee5\u5e6b\u52a9\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u5927\u5c0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u7d22\u5f15\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u522a\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7d22\u5f15\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u627e\u51fa\u672a\u88ab\u4f7f\u7528\u7684\u7d22\u5f15\uff1a<\/li>\n<pre><code>SHOW INDEX FROM my_table WHERE Key_name NOT IN (SELECT DISTINCT index_name FROM information_schema.statistics WHERE table_name='my_table');<\/code><\/pre>\n<li>\u5408\u4f75\u76f8\u4f3c\u7684\u7d22\u5f15\u3002\u5c0d\u65bc\u591a\u5217\u7d22\u5f15\uff0c\u78ba\u4fdd\u7d22\u5f15\u7684\u9806\u5e8f\u548c\u5217\u7684\u9078\u64c7\u662f\u6700\u4f73\u7684\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%88%86%e5%8d%80%e6%95%b8%e6%93%9a%e8%a1%a8-BLAfOclSus\">4. \u5206\u5340\u6578\u64da\u8868<\/h2>\n<p>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u5eab\uff0c\u5206\u5340\u662f\u4e00\u7a2e\u6709\u6548\u7684\u7ba1\u7406\u65b9\u6cd5\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u6210\u591a\u500b\u908f\u8f2f\u90e8\u5206\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u4e26\u6e1b\u5c11\u55ae\u500b\u8868\u7684\u5927\u5c0f\u3002\u5206\u5340\u53ef\u4ee5\u6839\u64da\u6642\u9593\u3001\u7bc4\u570d\u6216\u54c8\u5e0c\u7b49\u65b9\u5f0f\u9032\u884c\u3002\u4f8b\u5982\uff0c\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\u5275\u5efa\u5206\u5340\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE my_table (\n    id INT,\n    data VARCHAR(100),\n    created_at DATE\n) PARTITION BY RANGE (YEAR(created_at)) (\n    PARTITION p0 VALUES LESS THAN (2020),\n    PARTITION p1 VALUES LESS THAN (2021),\n    PARTITION p2 VALUES LESS THAN (2022)\n);<\/code><\/pre>\n<h2 id=\"5-%e5%ae%9a%e6%9c%9f%e5%82%99%e4%bb%bd%e5%92%8c%e6%ad%b8%e6%aa%94-BLAfOclSus\">5. \u5b9a\u671f\u5099\u4efd\u548c\u6b78\u6a94<\/h2>\n<p>\u5b9a\u671f\u5099\u4efd\u548c\u6b78\u6a94\u820a\u6578\u64da\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u4e3b\u6578\u64da\u5eab\u7684\u5927\u5c0f\u3002\u5c07\u4e0d\u518d\u983b\u7e41\u8a2a\u554f\u7684\u6578\u64da\u79fb\u52d5\u5230\u5099\u4efd\u5b58\u5132\u4e2d\uff0c\u53ef\u4ee5\u91cb\u653e\u4e3b\u6578\u64da\u5eab\u7684\u7a7a\u9593\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u6e1b\u5c11\u7a7a\u9593\u4f7f\u7528\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BLAfOclSus\">\u7e3d\u7d50<\/h2>\n<p>\u89e3\u6c7a\u6578\u64da\u5eab\u7a7a\u9593\u904e\u5927\u7684\u554f\u984c\u9700\u8981\u7d9c\u5408\u8003\u616e\u591a\u7a2e\u65b9\u6cd5\uff0c\u5305\u62ec\u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3001\u4f7f\u7528\u6578\u64da\u58d3\u7e2e\u6280\u8853\u3001\u512a\u5316\u7d22\u5f15\u3001\u5206\u5340\u6578\u64da\u8868\u4ee5\u53ca\u5b9a\u671f\u5099\u4efd\u548c\u6b78\u6a94\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u6709\u6548\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u5927\u5c0f\uff0c\u9084\u80fd\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6709\u6548\u65b9\u6cd5\u89e3\u6c7a\u6578\u64da\u5eab\u7a7a\u9593\u904e\u5927\u554f\u984c\uff0c\u512a\u5316\u5b58\u5132\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u7ba1\u7406\u9ad8\u6548\u4e14\u7d93\u6fdf\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-163845","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163845","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=163845"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163845\/revisions"}],"predecessor-version":[{"id":163846,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163845\/revisions\/163846"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}