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				<title>lucene 中 query 的实现</title>
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				<pubDate>Tue, 09 Oct 2018 00:00:00 +0800</pubDate>
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				<description>梳理 Lucene 常见 Query 类型与继承关系，并以 RegexpQuery 为入口说明 MultiTermQuery / AutomatonQuery 的职责边界。</description>
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				<title>SFTP 未关闭 Session 导致服务器 sshd 进程残留</title>
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				<pubDate>Thu, 28 Jul 2016 00:00:00 +0800</pubDate>
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				<description>JSch 使用 ChannelSftp 后只 disconnect channel 不够：必须关闭 Session，否则远端 sshd 会话进程堆积。附正确释放顺序与 finally 模板。</description>
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