{"id":5406,"date":"2020-07-30T00:26:24","date_gmt":"2020-07-29T16:26:24","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5406"},"modified":"2020-07-30T00:26:24","modified_gmt":"2020-07-29T16:26:24","slug":"mysql-innodb-acid%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5406","title":{"rendered":"MySQL InnoDB ACID\u6a21\u578b"},"content":{"rendered":"<div>\n<div>\n<span style=\\\"font-size: 1rem;\\\">ACID\u6a21\u578b\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u57fa\u672c\u539f\u5219\uff0c\u7528\u6765\u4fdd\u8bc1\u5546\u4e1a\u6570\u636e\u4ee5\u53ca\u91cd\u8981\u5e94\u7528\u670d\u52a1\u7684\u53ef\u9760\u6027\u3002MySQL InnoDB\u5b58\u50a8\u5f15\u64ce\u4ee5ACID\u6a21\u578b\u4e3a\u57fa\u7840\uff0c\u5b9e\u73b0\u4e86\u6570\u636e\u7684\u9ad8\u6548\u3001\u5b89\u5168\u5b58\u50a8\uff0c\u5728\u4e00\u4e9b\u610f\u5916\u573a\u666f\uff0c\u6bd4\u5982\u8f6f\u4ef6\u5d29\u6e83\uff0c\u786c\u4ef6\u6545\u969c\uff0c\u4e5f\u4e0d\u4f1a\u5bfc\u81f4\u6570\u636e\u635f\u574f\u3002\u5982\u679c\u5e94\u7528\u4f9d\u8d56ACID\uff0c\u4f7f\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\uff0c\u5c31\u4e0d\u5fc5\u518d\u8003\u8651\u6570\u636e\u4e00\u81f4\u6027\u68c0\u67e5\u548c\u6545\u969c\u6062\u590d\uff0c\u56e0\u8fd9\u8fd9\u4e9b\u673a\u5236Innodb\u5df2\u7ecf\u5b8c\u5168\u5177\u5907\uff0c\u4e0d\u5fc5\u518d\u91cd\u590d\u9020\u8f6e\u5b50\u3002<\/span>\n<\/div>\n<\/div>\n<div>\n\u5982\u679c\u7cfb\u7edf\u6709\u989d\u5916\u7684\u8f6f\u4ef6\u6216\u8005\u786c\u4ef6\u53ef\u9760\u6027\u4fdd\u969c\uff0c\u6216\u8005\u5e94\u7528\u5141\u8bb8\u4e00\u4e9b\u6570\u636e\u7684\u4e22\u5931\u6216\u8005\u4e0d\u4e00\u81f4\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574MySQL ACID\u76f8\u5173\u7684\u4e00\u4e9b\u914d\u7f6e\uff0c\u6765\u83b7\u53d6\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u541e\u5410\u91cf\u3002<\/p>\n<h4>1. ACID<\/h4>\n<ul>\n<li>A\uff0catomicity\uff0c\u539f\u5b50\u6027<\/li>\n<li>C\uff0cconsistency\uff0c\u4e00\u81f4\u6027<\/li>\n<li>I\uff0cisolation\uff0c\u9694\u79bb\u6027<\/li>\n<li>D\uff0cdurability\uff0c\u6301\u4e45\u6027<\/li>\n<\/ul>\n<h4>2. Atomicity \u539f\u5b50\u6027<\/h4>\n<p>\u539f\u5b50\u6027\u4e3b\u8981\u6d89\u53ca\u5230InnoDB\u7684\u4e8b\u52a1\uff0c\u76f8\u5173\u7684\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>autocommit\u81ea\u52a8\u63d0\u4ea4\u8bbe\u7f6e<\/li>\n<li>commit\u8bed\u53e5<\/li>\n<li>rollback\u8bed\u53e5<\/li>\n<\/ol>\n<h4>3. Consistency \u4e00\u81f4\u6027<\/h4>\n<p>\u4e00\u81f4\u6027\u4e3b\u8981\u53cd\u6620\u8fdb\u7a0b\u5d29\u6e83\u6062\u590d\u573a\u666f\u4e0b\uff0cInnoDB\u5185\u90e8\u5904\u7406\u6570\u636e\u7684\u8fc7\u7a0b\uff0c\u76f8\u5173\u7684\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>InnoDB doublewrite buffer<\/li>\n<li>InnoDB crash recovery<\/li>\n<\/ol>\n<h4>4. Isolation \u9694\u79bb\u6027<\/h4>\n<p>\u9694\u79bb\u6027\u4e3b\u8981\u6d89\u53caInnoDB\u7684\u4e8b\u52a1\uff0c\u5c24\u5176\u662f\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u3002\u76f8\u5173\u7684\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>autocommit\u81ea\u52a8\u63d0\u4ea4\u8bbe\u7f6e<\/li>\n<li>\u8bbe\u7f6e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u8bed\u53e5<\/li>\n<li>InnoDB\u5e95\u5c42\u9501\u7684\u5b9e\u73b0\u7ec6\u8282<\/li>\n<\/ol>\n<h4>5. Durability \u6301\u4e45\u6027<\/h4>\n<p>\u6301\u4e45\u6027\u4e3b\u8981\u6d89\u53ca\u786c\u4ef6\u7684\u8bbe\u7f6e\uff0c\u4f9d\u8d56\u786c\u4ef6\u5982CPU\uff0c\u7f51\u7edc\uff0c\u5b58\u50a8\u8bbe\u5907\u7684\u80fd\u529b\u3002\u5173\u4e8e\u6301\u4e45\u6027\u7684\u4e00\u4e9b\u539f\u5219\u76f8\u5bf9\u5176\u4ed6\u6765\u8bf4\u53ef\u80fd\u662f\u66f4\u52a0\u590d\u6742\u7684\uff0c\u56e0\u4e3a\u968f\u7740\u786c\u4ef6\u7684\u53d1\u5c55\u66f4\u65b0\uff0c\u6709\u4e9b\u539f\u5219\u53ef\u80fd\u4e0d\u518d\u9002\u7528\u3002MySQL\u4e2d\u4e0e\u6301\u4e45\u6027\u76f8\u5173\u7684\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>InnoDB doublewrite buffer\uff0c\u7531\u53c2\u6570innodb_doublewrite\u51b3\u5b9a\u662f\u5426\u6253\u5f00\u3002<\/li>\n<li>innodb_flush_log_at_trx_commit\uff0credo log\u5237\u76d8\u7b56\u7565\u3002<\/li>\n<li>sync_binlog\uff0cbinlog\u5237\u76d8\u7b56\u7565\u3002<\/li>\n<li>innodb_file_per_table\uff0c\u662f\u5426\u4f7f\u7528\u72ec\u7acb\u8868\u7a7a\u95f4\u3002<\/li>\n<li>\u5b58\u50a8\u8bbe\u5907\u7684\u5199\u7f13\u5b58\uff0c\u6bd4\u5982SSD\uff0cRAID\u5361\u9635\u5217\u3002<\/li>\n<li>\u5b58\u50a8\u8bbe\u5907\u7684\u7535\u5bb9\u7f13\u5b58\u3002<\/li>\n<li>\u8fd0\u884cMySQL\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u662f\u5426\u652f\u6301fsync\u7cfb\u7edf\u8c03\u7528\u3002<\/li>\n<li>\u8fd0\u884cMySQL\u7684\u673a\u5668\u662f\u5426\u88c5\u5907\u4e0d\u95f4\u65ad\u7684\u7535\u6e90\u4f9b\u7ed9\u8bbe\u5907(UPS)\u3002<\/li>\n<li>\u5907\u4efd\u7b56\u7565\u3001\u9891\u7387\u548c\u7c7b\u578b\uff0c\u5907\u4efd\u4fdd\u7559\u5468\u671f\u3002<\/li>\n<li>\u4e0d\u540c\u6570\u636e\u4e2d\u5fc3\u4e4b\u95f4\u7684\u7f51\u7edc\u8fde\u63a5\u5f71\u54cd\u3002<\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>ACID\u6a21\u578b\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u57fa\u672c\u539f\u5219\uff0c\u7528\u6765\u4fdd\u8bc1\u5546\u4e1a\u6570\u636e\u4ee5\u53ca\u91cd\u8981\u5e94\u7528\u670d\u52a1\u7684\u53ef\u9760\u6027\u3002MySQL InnoDB\u5b58\u50a8\u5f15\u64ce &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5406\"> <span class=\"screen-reader-text\">MySQL InnoDB ACID\u6a21\u578b<\/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":"ACID\u6a21\u578b\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u57fa\u672c\u539f\u5219\uff0c\u7528\u6765\u4fdd\u8bc1\u5546\u4e1a\u6570\u636e\u4ee5\u53ca\u91cd\u8981\u5e94\u7528\u670d\u52a1\u7684\u53ef\u9760\u6027\u3002MySQL InnoDB\u5b58\u50a8\u5f15\u64ce&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5406"}],"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=5406"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5406\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5406"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}