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	<title>isolation level &#8211; dbtan 谈DB</title>
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		<title>MySQL使用可重复读作为默认隔离级别的原因</title>
		<link>https://dbtan.com/2015/10/mysql-using-repeatable-read-as-the-default-isolation-level.html</link>
					<comments>https://dbtan.com/2015/10/mysql-using-repeatable-read-as-the-default-isolation-level.html#respond</comments>
		
		<dc:creator><![CDATA[dbtan]]></dc:creator>
		<pubDate>Wed, 07 Oct 2015 09:53:10 +0000</pubDate>
				<category><![CDATA[MySQL]]></category>
		<category><![CDATA[MySQL InnoDB 存储引擎]]></category>
		<category><![CDATA[读书笔记]]></category>
		<category><![CDATA[isolation level]]></category>
		<category><![CDATA[repeatable read]]></category>
		<guid isPermaLink="false">http://www.dbtan.com/?p=237</guid>

					<description><![CDATA[一般的RDBMS系统，默认都会使用读提交（Read-Comitted，RC）作为默认隔离级别，如Oracle、 [&#8230;]]]></description>
										<content:encoded><![CDATA[<p>一般的RDBMS系统，默认都会使用读提交（Read-Comitted，RC）作为默认隔离级别，如Oracle、SQL Server等，而MySQL却使用可重复读（Read-Repeatable，RR）。要知道，越高的隔离级别，能解决的数据一致性问题越多，理论上性能损耗更大，可并发性越低。隔离级别依次[......]</p>
<p class="read-more"><a href="https://dbtan.com/2015/10/mysql-using-repeatable-read-as-the-default-isolation-level.html">阅读全文</a></p>
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