{"id":350,"date":"2022-06-26T10:30:15","date_gmt":"2022-06-26T02:30:15","guid":{"rendered":"https:\/\/frogvps.com\/?p=350"},"modified":"2022-06-26T10:30:16","modified_gmt":"2022-06-26T02:30:16","slug":"mysql%e4%ba%8b%e5%8a%a1%e6%97%a5%e5%bf%97%e7%9a%84%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/frogvps.com\/?p=350","title":{"rendered":"MYSQL\u4e8b\u52a1\u65e5\u5fd7\u7684\u4f18\u5316"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e8b\u52a1\u65e5\u5fd7\u5b9a\u4e49<\/h2>\n\n\n\n<p>\u4e8b\u52a1\u65e5\u5fd7\uff0ctransaction log\uff0c\u5b83\u7684\u65e5\u5fd7\u5206\u4e3a\u4e24\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>redo log\uff1a\u5b9e\u73b0\u5199\u524d\u65e5\u5fd7\uff0c WAL\uff08Write Ahead Log) \uff0c\u6570\u636e\u66f4\u65b0\u524d\u5148\u8bb0\u5f55redo log<\/li><li>undo log\uff1a\u4fdd\u5b58\u4e0e\u6267\u884c\u7684\u64cd\u4f5c<strong>\u76f8\u53cd<\/strong>\u7684\u64cd\u4f5c\uff0c\u7528\u4e8e\u5b9e\u73b0\u56de\u6eda\uff0crollback<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u76f8\u5173\u914d\u7f6e<\/h2>\n\n\n\n<p><strong>\u67e5\u770bInnoDB\u4e8b\u52a1\u65e5\u5fd7\u7684\u76f8\u5173\u53d8\u91cf<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>show variables like 'innodb_log%';<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>innodb_log_file_size #\u6bcf\u4e2a\u65e5\u5fd7\u6587\u4ef6\u7684\u5927\u5c0f\uff0c\u9002\u5f53\u8c03\u5927\u53ef\u4ee5\u8282\u7ea6I\/O\ninnodb_log_files_in_group #\u65e5\u5fd7\u6587\u4ef6\u6570\u91cf\uff0c\u9002\u5f53\u8c03\u5927\u53ef\u4ee5\u8282\u7ea6I\/O\ninnodb_log_group_home_dir #\u5b58\u653e\u65e5\u5fd7\u6587\u4ef6\u7684\u8def\u5f84\ninnodb_log_buffer_size #\u7f13\u5b58\u5927\u5c0f<\/code><\/pre>\n\n\n\n<p><strong>\u4e0e\u4e8b\u52a1\u65e5\u5fd7\u6027\u80fd\u76f8\u5173\u7684\u91cd\u8981\u914d\u7f6e<\/strong><\/p>\n\n\n\n<p>\u4e8b\u52a1\u65e5\u5fd7\u5199\u78c1\u76d8\u7684\u65b9\u5f0f\uff0c\u6709\u4e09\u79cd\u53ef\u8bbe\u7f6e\u7684\u503c0\u30011\u30012\uff0c\u9ed8\u8ba4\u4e3a1\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SET GLOBAL innodb_flush_log_at_trx_commit=0|1|2<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"946\" height=\"598\" src=\"https:\/\/frogvps.com\/wp-content\/uploads\/2022\/06\/20220626a1.jpg\" alt=\"\" class=\"wp-image-351\" srcset=\"https:\/\/frogvps.com\/wp-content\/uploads\/2022\/06\/20220626a1.jpg 946w, https:\/\/frogvps.com\/wp-content\/uploads\/2022\/06\/20220626a1-300x190.jpg 300w, https:\/\/frogvps.com\/wp-content\/uploads\/2022\/06\/20220626a1-768x485.jpg 768w\" sizes=\"auto, (max-width: 946px) 100vw, 946px\" \/><figcaption>\u4e8b\u52a1\u65e5\u5fd7\u7684\u6027\u80fd\u4f18\u5316<\/figcaption><\/figure>\n\n\n\n<p>\u5f53\u6211\u4eec\u5728\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u8fd9\u6761\u6570\u636e\u53ea\u6709\u53ef\u80fd\u51fa\u73b0\u5728\u4e24\u4e2a\u5730\u65b9\uff1a\u5185\u5b58\uff08\u4e0a\u56fe\u6d45\u9ec4\u8272\u533a\u57df\uff09\u6216\u8005\u78c1\u76d8\uff08\u84dd\u8272\u533a\u57df\uff09\u3002\u5185\u5b58\u5206\u4e3a\u4e09\u5757\u7a7a\u95f4\uff0cbuffer pool\uff08\u9ec4\u8272\uff09\u547d\u4ee4\u7684\u7f13\u51b2\u533a\u3001log buffer \u65e5\u5fd7\u7684\u7f13\u51b2\u533a\u3001OS cache\/buffer \u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7684\u7f13\u51b2\u533a\u3002\u524d\u4e24\u5757\u7a7a\u95f4\u5c5e\u4e8eMYSQL\uff0c\u540e\u8005\u5c5e\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\u4e09\u79cd\u6a21\u5f0f\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<p><strong>0<\/strong><\/p>\n\n\n\n<p>\u6bcf\u6b21\u63d0\u4ea4\u4e8b\u52a1\uff0c\u5148\u5199\u5165MYSQL\u7684\u7f13\u51b2\u533a\uff0c\u7136\u540e\u6bcf\u96941\u79d2\u5199\u5165\u64cd\u4f5c\u7cfb\u7edf\u7684\u7f13\u51b2\u533a\u548c\u78c1\u76d8\u3002\u8282\u7701I\/O\u3002<\/p>\n\n\n\n<p><strong>1<\/strong><\/p>\n\n\n\n<p>\u6bcf\u6b21\u63d0\u4ea4\u4e8b\u52a1\uff0c\u90fd\u4f1a\u5199\u5165\u64cd\u4f5c\u7cfb\u7edf\u7684\u7f13\u51b2\u533a\u5e76\u4e14\u7acb\u5373\u5199\u78c1\u76d8\u3002\u63d0\u4ea4100\u6b21\u4e8b\u52a1\u5c31\u7b49\u4e8e\u5199\u4e86100\u6b21\u78c1\u76d8\uff0cI\/O\u6b21\u6570\u591a\uff0c\u4f46\u662f\u5b89\u5168\u6027\u76f8\u76f8\u5bf9\u8f83\u9ad8\u3002\u5982\u679c\u8ffd\u6c42<strong>\u9ad8\u5b89\u5168\u6027<\/strong>\uff0c\u5efa\u8bae\u90091\u3002<\/p>\n\n\n\n<p><strong>2<\/strong><\/p>\n\n\n\n<p>\u6bcf\u6b21\u63d0\u4ea4\u4e8b\u52a1\uff0c\u90fd\u4f1a\u5199\u5165\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2\u533a\uff0c\u7136\u540e\u6bcf\u96941\u79d2\u5199\u5165\u78c1\u76d8\u3002\u6bd40\u66f4\u5b89\u5168\uff0c\u6bd41\u8282\u7701I\/O\u3002\u9ad8\u5e76\u53d1\u4e1a\u52a1\uff0c\u8ffd\u6c42<strong>\u6027\u80fd<\/strong>\u7684\u540c\u65f6\u60f3\u517c\u987e\u5b89\u5168\uff0c\u5efa\u8bae\u90092\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u672c\u7ad9\u4f7f\u7528\u7684\u662f2<\/p>\n\n\n\n<p>\u4fee\u6539\u65b9\u6cd5<\/p>\n\n\n\n<p>\u5148\u767b\u5f55\u6570\u636e\u5e93<\/p>\n\n\n\n<p>\u7136\u540e\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SET GLOBAL innodb_flush_log_at_trx_commit=2;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8b\u52a1\u65e5\u5fd7\u5b9a\u4e49 \u4e8b\u52a1\u65e5\u5fd7\uff0ctransaction log\uff0c\u5b83\u7684\u65e5\u5fd7\u5206\u4e3a\u4e24\u79cd\uff1a redo log\uff1a\u5b9e\u73b0\u5199\u524d\u65e5\u5fd7\uff0c WAL\uff08Write Ahead Log) \uff0c\u6570\u636e\u66f4\u65b0\u524d\u5148\u8bb0\u5f55redo log undo log\uff1a\u4fdd\u5b58\u4e0e\u6267\u884c\u7684\u64cd\u4f5c\u76f8\u53cd\u7684\u64cd\u4f5c\uff0c\u7528\u4e8e\u5b9e&#8230;<\/p>\n","protected":false},"author":1,"featured_media":283,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[36],"topic":[],"class_list":["post-350","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-35","tag-mysql"],"_links":{"self":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=350"}],"version-history":[{"count":3,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/350\/revisions"}],"predecessor-version":[{"id":354,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/350\/revisions\/354"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/media\/283"}],"wp:attachment":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=350"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}