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	<title>Buffer Cache &#8211; dbtan 谈DB</title>
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	<description>dbtan 的生活、Oracle 及 Linux 等的学习笔记、观点。      说，永远易于做！</description>
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		<title>Buffer Cache的原理及使用</title>
		<link>https://dbtan.com/2009/11/buffer-cache-principle-and-use.html</link>
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		<pubDate>Mon, 23 Nov 2009 10:14:00 +0000</pubDate>
				<category><![CDATA[Oracle]]></category>
		<category><![CDATA[深入解析Oracle]]></category>
		<category><![CDATA[读书笔记]]></category>
		<category><![CDATA[Buffer Cache]]></category>
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					<description><![CDATA[Buffer Cache的原理及使用： ⑴ 当一个Server进程需要读数据到Buffer Cache中时，首 [&#8230;]]]></description>
										<content:encoded><![CDATA[<p>Buffer Cache的原理及使用：   ⑴ 当一个Server进程需要读数据到Buffer Cache中时，首先必须判断该数据在Buffer中是否存在（图①所示过程），如果存在且可用，则获取该数据，同时根据LRU算法增进其访问计数；如果Buffer中不存在该数据，则需要从数据文件上进行读取。[......]</p>
<p class="read-more"><a href="https://dbtan.com/2009/11/buffer-cache-principle-and-use.html">阅读全文</a></p>
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