{"id":5373,"date":"2020-07-29T23:53:52","date_gmt":"2020-07-29T15:53:52","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5373"},"modified":"2020-07-29T23:53:52","modified_gmt":"2020-07-29T15:53:52","slug":"mysql-8-0-doublewrite-%e6%94%b9%e8%bf%9b","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5373","title":{"rendered":"MySQL 8.0 doublewrite \u6539\u8fdb"},"content":{"rendered":"<div class=\\\"blog_title\\\">\n<span style=\\\"font-size: 1rem;\\\">doublewrite \u662fMySQL\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u7684\u4e00\u79cd\u673a\u5236\uff0cdoublewrite\u5728\u78c1\u76d8\u4e0a\u6709\u4e00\u5757\u4e13\u95e8\u7684\u5b58\u50a8\u533a\u57df\uff0cInnoDB \u5237\u810f\u9875\u5230\u78c1\u76d8\u65f6\uff0c\u5148\u5c06\u9875\u9762\u5199\u5230\u8fd9\u5757\u4e13\u95e8\u7684\u5b58\u50a8\u533a\uff0c\u7136\u540e\u518d\u5c06\u9875\u9762\u5199\u5165\u5230InnoDB\u6570\u636e\u6587\u4ef6\u4e2d\uff0c\u56e0\u4e3a\u540c\u4e00\u4e2a\u9875\u9762\uff0c\u5199\u4e86\u4e24\u6b21\uff0c\u6240\u4ee5\u79f0\u4e4b\u4e3adouble write\u3002<\/span>\n<\/div>\n<div class=\\\"blog_content\\\">\n<div class=\\\"blog_detail\\\">\ndoublewrite\u867d\u7136\u52a0\u91cd\u4e86\u78c1\u76d8IO\u7684\u8d1f\u8f7d\uff0c\u4f46\u662f\u80fd\u591f\u4fdd\u8bc1\u5f02\u5e38\u573a\u666f\u4e0b\u7684\u6570\u636e\u5b8c\u6574\u6027\u3002MySQL InnoDB \u9875\u9762\u9ed8\u8ba4\u5927\u5c0f16KB\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4e00\u6b21\u5199\u5165\u7684\u5757\u5927\u5c0f\u9ed8\u8ba4\u4e3a4KB\uff0c\u4f20\u7edf\u7684\u78c1\u76d8\u5757\u5927\u5c0f\u4e3a512\u5b57\u8282\uff0c\u56e0\u6b64MySQL\u7684\u4e00\u4e2a\u9875\u9762\u8981\u5199\u5165\u5230\u78c1\u76d8\uff0c\u9700\u8981\u5206\u6279\u8fdb\u884c\u5199\u5165\uff0c\u5206\u6279\u5199\u5165\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u5728\u5199\u5165\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u53d1\u751f\u5f02\u5e38\uff0c\u90a3\u4e48\u4e00\u4e2a16KB\u7684\u9875\u9762\uff0c\u5c31\u6709\u53ef\u80fd\u53ea\u6709\u90e8\u5206\u6570\u636e\u6210\u529f\u5199\u5165\u5230\u4e86\u78c1\u76d8\uff0c\u5bfc\u81f4\u9875\u9762\u6570\u636e\u88ab\u5199\u4e71\uff0c\u4e5f\u5c31\u662f\u51fa\u73b0\u6240\u8c13\u7684\u9875\u635f\u574f\u3002InnoDB\u5d29\u6e83\u6062\u590d\u65f6\uff0c\u53d1\u73b0\u9875\u635f\u574f\uff0c\u5982\u679c\u6709doublewrite\u673a\u5236\uff0c\u5c31\u80fd\u4ecedoublewrite\u5b58\u50a8\u533a\u62ff\u5230\u5b8c\u6574\u7684\u9875\u9762\uff0c\u987a\u5229\u6267\u884c\u5d29\u6e83\u6062\u590d\u8fc7\u7a0b\uff0c\u4ece\u800c\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\uff0c\u907f\u514d\u6570\u636e\u4e22\u5931\u3002<\/p>\n<h5>MySQL 8.0 doublewrite \u6539\u8fdb<\/h5>\n<p>\u5728MySQL 8.0.20 \u7248\u672c\u4e4b\u524d\uff0cdoublewrite \u5b58\u50a8\u533a\u4f4d\u4e8e\u7cfb\u7edf\u8868\u7a7a\u95f4\uff0c\u4ece 8.0.20 \u7248\u672c\u5f00\u59cb\uff0cdoublewrite \u6709\u81ea\u5df1\u72ec\u7acb\u7684\u8868\u7a7a\u95f4\u6587\u4ef6\uff0c\u8fd9\u79cd\u53d8\u66f4\uff0c\u80fd\u591f\u964d\u4f4edoublewrite\u7684\u5199\u5165\u5ef6\u8fdf\uff0c\u589e\u52a0\u541e\u5410\u91cf\uff0c\u4e3a\u8bbe\u7f6edoublewrite\u6587\u4ef6\u7684\u5b58\u653e\u4f4d\u7f6e\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7075\u6d3b\u6027\u3002<br \/>\n<strong>\u65b0\u589e\u7684\u53c2\u6570\uff1a<\/strong><\/p>\n<ul>\n<li>innodb_doublewrite_dir\uff0c\u6307\u5b9adoublewrite\u6587\u4ef6\u5b58\u653e\u7684\u76ee\u5f55\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u8be5\u53c2\u6570\uff0c\u90a3\u4e48\u4e0einnodb\u6570\u636e\u76ee\u5f55\u4e00\u81f4(innodb_data_home_dir)\uff0c\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u4e5f\u6ca1\u6709\u6307\u5b9a\uff0c\u90a3\u4e48\u9ed8\u8ba4\u653e\u5728\u6570\u636e\u76ee\u5f55\u4e0b\u9762(datadir)\u3002<\/li>\n<li>innodb_doublewrite_files\uff0c \u6307\u5b9adoublewrite\u6587\u4ef6\u6570\u91cf\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2abuffer pool\u5b9e\u4f8b\uff0c\u5bf9\u5e942\u4e2adoublewrite\u6587\u4ef6\u3002<\/li>\n<li>innodb_doublewrite_pages\uff0c\u4e00\u6b21\u6279\u91cf\u5199\u5165\u7684doublewrite\u9875\u6570\u91cf\u7684\u6700\u5927\u503c\uff0c\u9ed8\u8ba4\u503c\u3001\u6700\u5c0f\u503c\u4e0einnodb_write_io_threads\u53c2\u6570\u503c\u76f8\u540c\uff0c\u6700\u5927\u503c512\u3002<\/li>\n<li>innodb_doublewrite_batch_size\uff0c\u4e00\u6b21\u6279\u91cf\u5199\u5165\u7684\u9875\u6570\u91cf\u3002\u9ed8\u8ba4\u503c\u4e3a0\uff0c\u53d6\u503c\u8303\u56f40\u5230256\u3002<\/li>\n<\/ul>\n<p><strong>\u5df2\u6709\u7684\u53c2\u6570\uff1a<\/strong><\/p>\n<ul>\n<li>innodb_doublewrite\uff0c\u63a7\u5236\u662f\u5426\u542f\u7528doublewrite\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>doublewrite \u662fMySQL\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u7684\u4e00\u79cd\u673a\u5236\uff0cdoublewrite\u5728\u78c1\u76d8\u4e0a\u6709\u4e00\u5757\u4e13\u95e8\u7684\u5b58\u50a8\u533a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5373\"> <span class=\"screen-reader-text\">MySQL 8.0 doublewrite \u6539\u8fdb<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[90,88],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"doublewrite \u662fMySQL\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u7684\u4e00\u79cd\u673a\u5236\uff0cdoublewrite\u5728\u78c1\u76d8\u4e0a\u6709\u4e00\u5757\u4e13\u95e8\u7684\u5b58\u50a8\u533a&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5373"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5373"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5373\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5373"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}