{"id":187954,"date":"2024-11-11T18:34:18","date_gmt":"2024-11-11T10:34:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187954\/"},"modified":"2024-11-11T18:34:19","modified_gmt":"2024-11-11T10:34:19","slug":"%e6%95%b8%e6%93%9a%e6%b8%85%e7%90%86%e5%8f%88%e5%bf%ab%e5%8f%88%e7%9c%81%e5%8a%9b%ef%bc%81-%e6%80%8e%e9%ba%bc%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e8%a1%a8%e8%a3%a1%e7%9a%84%e5%a4%a7%e9%87%8f%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187954\/","title":{"rendered":"\u6578\u64da\u6e05\u7406\u53c8\u5feb\u53c8\u7701\u529b\uff01 (\u600e\u9ebc\u5feb\u901f\u522a\u9664\u8868\u88e1\u7684\u5927\u91cf\u6578\u64da)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e6%b8%85%e7%90%86%e5%8f%88%e5%bf%ab%e5%8f%88%e7%9c%81%e5%8a%9b%ef%bc%81%e6%80%8e%e9%ba%bc%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e8%a1%a8%e8%a3%a1%e7%9a%84%e5%a4%a7%e9%87%8f%e6%95%b8-NJnnCHqSZF\">\u6578\u64da\u6e05\u7406\u53c8\u5feb\u53c8\u7701\u529b\uff01(\u600e\u9ebc\u5feb\u901f\u522a\u9664\u8868\u88e1\u7684\u5927\u91cf\u6578\u64da)<\/h1>\n<p>\u5728\u6578\u64da\u7ba1\u7406\u7684\u904e\u7a0b\u4e2d\uff0c\u6578\u64da\u6e05\u7406\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u6b65\u9a5f\u3002\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u9019\u4e0d\u50c5\u6703\u4f54\u7528\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u53ef\u80fd\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u5b78\u6703\u5982\u4f55\u5feb\u901f\u6709\u6548\u5730\u522a\u9664\u8868\u4e2d\u7684\u5927\u91cf\u6578\u64da\uff0c\u5c0d\u65bc\u7dad\u6301\u6578\u64da\u5eab\u7684\u5065\u5eb7\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%b8%85%e7%90%86%e6%95%b8%e6%93%9a%ef%bc%9f-NJnnCHqSZF\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6e05\u7406\u6578\u64da\uff1f<\/h2>\n<p>\u6578\u64da\u6e05\u7406\u7684\u4e3b\u8981\u76ee\u7684\u662f\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7528\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9700\u8981\u5b9a\u671f\u6e05\u7406\u6578\u64da\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u5347\u6027\u80fd\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u67e5\u8a62\u901f\u5ea6\u53ef\u80fd\u6703\u8b8a\u6162\uff0c\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u97ff\u61c9\u6642\u9593\u3002<\/li>\n<li><strong>\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff1a<\/strong>\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u53ef\u4ee5\u91cb\u653e\u5b58\u5132\u7a7a\u9593\uff0c\u964d\u4f4e\u904b\u71df\u6210\u672c\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u6578\u64da\u8cea\u91cf\uff1a<\/strong>\u4fdd\u6301\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u4e00\u81f4\u6027\uff0c\u907f\u514d\u56e0\u904e\u6642\u6216\u932f\u8aa4\u7684\u6578\u64da\u5c0e\u81f4\u7684\u6c7a\u7b56\u5931\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e5%a4%a7%e9%87%8f%e6%95%b8%e6%93%9a-NJnnCHqSZF\">\u5982\u4f55\u5feb\u901f\u522a\u9664\u5927\u91cf\u6578\u64da<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u522a\u9664\u5927\u91cf\u6578\u64da\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u6cd5\u5be6\u73fe\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6280\u8853\u548c\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-sql-%e8%aa%9e%e5%8f%a5-NJnnCHqSZF\">1. \u4f7f\u7528 SQL \u8a9e\u53e5<\/h3>\n<p>\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 SQL \u7684 <code>DELETE<\/code> \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u522a\u9664\u6240\u6709\u72c0\u614b\u70ba\u201c\u904e\u671f\u201d\u7684\u8a02\u55ae\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM orders WHERE status = 'expired';<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u9019\u7a2e\u65b9\u6cd5\u5728\u522a\u9664\u5927\u91cf\u6578\u64da\u6642\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%88%86%e6%89%b9%e5%88%aa%e9%99%a4-NJnnCHqSZF\">2. \u4f7f\u7528\u5206\u6279\u522a\u9664<\/h3>\n<p>\u70ba\u4e86\u907f\u514d\u4e00\u6b21\u6027\u522a\u9664\u5927\u91cf\u6578\u64da\u5c0e\u81f4\u7684\u6027\u80fd\u4e0b\u964d\uff0c\u53ef\u4ee5\u8003\u616e\u5206\u6279\u522a\u9664\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6bcf\u6b21\u64cd\u4f5c\u7684\u8ca0\u64d4\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET @batch_size = 1000;\nWHILE (SELECT COUNT(*) FROM orders WHERE status = 'expired') &gt; 0 DO\n    DELETE FROM orders WHERE status = 'expired' LIMIT @batch_size;\nEND WHILE;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u6bcf\u6b21\u522a\u9664\u6700\u591a 1000 \u689d\u904e\u671f\u7684\u8a02\u55ae\uff0c\u76f4\u5230\u6240\u6709\u904e\u671f\u8a02\u55ae\u90fd\u88ab\u522a\u9664\u3002<\/p>\n<h3>3. \u4f7f\u7528 <code>TRUNCATE<\/code> \u8a9e\u53e5<\/h3>\n<p>\u5982\u679c\u60a8\u9700\u8981\u522a\u9664\u6574\u500b\u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>TRUNCATE<\/code> \u8a9e\u53e5\u3002\u9019\u7a2e\u65b9\u6cd5\u6bd4 <code>DELETE<\/code> \u66f4\u5feb\uff0c\u56e0\u70ba\u5b83\u4e0d\u6703\u9010\u884c\u522a\u9664\u6578\u64da\uff0c\u800c\u662f\u76f4\u63a5\u91cb\u653e\u6574\u500b\u8868\u7684\u7a7a\u9593\uff1a<\/p>\n<pre><code>TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre><code>TRUNCATE TABLE orders;<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>TRUNCATE<\/code> \u4e0d\u80fd\u8207 <code>WHERE<\/code> \u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\uff0c\u4e26\u4e14\u901a\u5e38\u7121\u6cd5\u6062\u5fa9\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95%e5%92%8c%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2-NJnnCHqSZF\">4. \u4f7f\u7528\u7d22\u5f15\u548c\u512a\u5316\u67e5\u8a62<\/h3>\n<p>\u5728\u522a\u9664\u5927\u91cf\u6578\u64da\u4e4b\u524d\uff0c\u78ba\u4fdd\u76f8\u95dc\u7684\u5217\u4e0a\u6709\u9069\u7576\u7684\u7d22\u5f15\u3002\u9019\u6a23\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\uff0c\u5f9e\u800c\u63d0\u9ad8\u522a\u9664\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NJnnCHqSZF\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u6e05\u7406\u662f\u7dad\u6301\u6578\u64da\u5eab\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528 SQL \u8a9e\u53e5\u3001\u5206\u6279\u522a\u9664\u3001<code>TRUNCATE<\/code> \u8a9e\u53e5\u4ee5\u53ca\u512a\u5316\u67e5\u8a62\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u522a\u9664\u8868\u4e2d\u7684\u5927\u91cf\u6578\u64da\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\uff0c\u9084\u80fd\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u8cea\u91cf\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u6578\u64da\u6e05\u7406\u9084\u662f\u5176\u4ed6\u6578\u64da\u7ba1\u7406\u9700\u6c42\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a> \u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u914d\u7f6e\u9078\u64c7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u522a\u9664\u8868\u88e1\u7684\u5927\u91cf\u6578\u64da\uff0c\u8b93\u6578\u64da\u6e05\u7406\u8b8a\u5f97\u53c8\u5feb\u53c8\u7701\u529b\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\uff0c\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\uff01<\/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-187954","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187954","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=187954"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187954\/revisions"}],"predecessor-version":[{"id":187955,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187954\/revisions\/187955"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}