{"id":39883,"date":"2023-12-11T14:49:08","date_gmt":"2023-12-11T06:49:08","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=39883"},"modified":"2023-12-11T14:49:08","modified_gmt":"2023-12-11T06:49:08","slug":"%e8%af%b4%e4%b8%80%e4%b8%8b%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e4%ba%8b%e5%8a%a1%e9%9a%94%e7%a6%bb%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%af%b4%e4%b8%80%e4%b8%8b%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e4%ba%8b%e5%8a%a1%e9%9a%94%e7%a6%bb%ef%bc%9f\/","title":{"rendered":"\u8bf4\u4e00\u4e0b\u6570\u636e\u5e93\u7684\u4e8b\u52a1\u9694\u79bb\uff1f"},"content":{"rendered":"

“`”<\/p>\n

<p style=""color: rgb(33, 37, 41);"">MySQL \u7684\u4e8b\u52a1\u9694\u79bb\u662f\u5728 MySQL. ini \u914d\u7f6e\u6587\u4ef6\u91cc\u6dfb\u52a0\u7684\uff0c\u5728\u6587\u4ef6\u7684\u6700\u540e\u6dfb\u52a0\uff1a<\/p><\/p>\n

<p style=""color: rgb(33, 37, 41);"">transaction-isolation = REPEATABLE-READ 1 \u53ef\u7528\u7684\u914d\u7f6e\u503c\uff1aREAD-UNCOMMITTED\u3001READ-COMMITTED\u3001REPEATABLE-READ\u3001SERIALIZABLE\u3002<\/p><\/p>\n

<p style=""color: rgb(33, 37, 41);"">READ-UNCOMMITTED\uff1a\u672a\u63d0\u4ea4\u8bfb\uff0c\u6700\u4f4e\u9694\u79bb\u7ea7\u522b\u3001\u4e8b\u52a1\u672a\u63d0\u4ea4\u524d\uff0c\u5c31\u53ef\u88ab\u5176\u4ed6\u4e8b\u52a1\u8bfb\u53d6\uff08\u4f1a\u51fa\u73b0\u5e7b\u8bfb\u3001\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\uff09\u3002<\/p><\/p>\n

<p style=""color: rgb(33, 37, 41);"">READ-COMMITTED\uff1a\u63d0\u4ea4\u8bfb\uff0c\u4e00\u4e2a\u4e8b\u52a1\u63d0\u4ea4\u540e\u624d\u80fd\u88ab\u5176\u4ed6\u4e8b\u52a1\u8bfb\u53d6\u5230\uff08\u4f1a\u9020\u6210\u5e7b\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\uff09\u3002<\/p><\/p>\n

<p style=""color: rgb(33, 37, 41);"">REPEATABLE-READ\uff1a\u53ef\u91cd\u590d\u8bfb\uff0c\u9ed8\u8ba4\u7ea7\u522b\uff0c\u4fdd\u8bc1\u591a\u6b21\u8bfb\u53d6\u540c\u4e00\u4e2a\u6570\u636e\u65f6\uff0c\u5176\u503c\u90fd\u548c\u4e8b\u52a1\u5f00\u59cb\u65f6\u5019\u7684\u5185\u5bb9\u662f\u4e00\u81f4\uff0c\u7981\u6b62\u8bfb\u53d6\u5230\u522b\u7684\u4e8b\u52a1\u672a\u63d0\u4ea4\u7684\u6570\u636e\uff08\u4f1a\u9020\u6210\u5e7b\u8bfb\uff09\u3002<\/p><\/p>\n

<p style=""color: rgb(33, 37, 41);"">SERIALIZABLE\uff1a\u5e8f\u5217\u5316\uff0c\u4ee3\u4ef7\u6700\u9ad8\u6700\u53ef\u9760\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u8be5\u9694\u79bb\u7ea7\u522b\u80fd\u9632\u6b62\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u3001\u5e7b\u8bfb\u3002 \u810f\u8bfb \uff1a\u8868\u793a\u4e00\u4e2a\u4e8b\u52a1\u80fd\u591f\u8bfb\u53d6\u53e6\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u8fd8\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002\u6bd4\u5982\uff0c\u67d0\u4e2a\u4e8b\u52a1\u5c1d\u8bd5\u63d2\u5165\u8bb0\u5f55 A\uff0c\u6b64\u65f6\u8be5\u4e8b\u52a1\u8fd8\u672a\u63d0\u4ea4\uff0c\u7136\u540e\u53e6\u4e00\u4e2a\u4e8b\u52a1\u5c1d\u8bd5\u8bfb\u53d6\u5230\u4e86\u8bb0\u5f55 A\u3002 \u4e0d\u53ef\u91cd\u590d\u8bfb \uff1a\u662f\u6307\u5728\u4e00\u4e2a\u4e8b\u52a1\u5185\uff0c\u591a\u6b21\u8bfb\u540c\u4e00\u6570\u636e\u3002 \u5e7b\u8bfb \uff1a\u6307\u540c\u4e00\u4e2a\u4e8b\u52a1\u5185\u591a\u6b21\u67e5\u8be2\u8fd4\u56de\u7684\u7ed3\u679c\u96c6\u4e0d\u4e00\u6837\u3002\u6bd4\u5982\u540c\u4e00\u4e2a\u4e8b\u52a1 A \u7b2c\u4e00\u6b21\u67e5\u8be2\u65f6\u5019\u6709 n \u6761\u8bb0\u5f55\uff0c\u4f46\u662f\u7b2c\u4e8c\u6b21\u540c\u7b49\u6761\u4ef6\u4e0b\u67e5\u8be2\u5374\u6709 n+1 \u6761\u8bb0\u5f55\uff0c\u8fd9\u5c31\u597d\u50cf\u4ea7\u751f\u4e86\u5e7b\u89c9\u3002\u53d1\u751f\u5e7b\u8bfb\u7684\u539f\u56e0\u4e5f\u662f\u53e6\u5916\u4e00\u4e2a\u4e8b\u52a1\u65b0\u589e\u6216\u8005\u5220\u9664\u6216\u8005\u4fee\u6539\u4e86\u7b2c\u4e00\u4e2a\u4e8b\u52a1\u7ed3\u679c\u96c6\u91cc\u9762\u7684\u6570\u636e\uff0c\u540c\u4e00\u4e2a\u8bb0\u5f55\u7684\u6570\u636e\u5185\u5bb9\u88ab\u4fee\u6539\u4e86\uff0c\u6240\u6709\u6570\u636e\u884c\u7684\u8bb0\u5f55\u5c31\u53d8\u591a\u6216\u8005\u53d8\u5c11\u4e86<\/p><\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” <p style=""color: rgb(33, […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-39883","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39883","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=39883"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39883\/revisions"}],"predecessor-version":[{"id":39884,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39883\/revisions\/39884"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=39883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=39883"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=39883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}