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Region

Posted by 夏泽民 Dec 4, 2021

对象存储oss和aws的sdk 协议不一样， oss协议Region直接拼写在url上 aws是单独的 Region表示OSS的数据中心所在的地域，Endpoint表示OSS对外服务的访问域名。本文主要介绍Region与Endpoint的对应关系。

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Ingest-Attachment 对 word和PDF文档的全文搜索

Posted by 夏泽民 Dec 4, 2021

https://github.com/elastic/elasticsearch/tree/master/plugins/ingest-attachment https://github.com/RD17/ambar https://github.com/dadoonet/fscrawler https://www.cnblogs.com/NextNight/p/6904791.html

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EventSource

Posted by 夏泽民 Dec 4, 2021

An EventSource instance opens a persistent connection to an HTTP server, which sends events in text/event-stream format. The connection remains open until closed by calling

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DFS_QUERY_AND_FEATCH

Posted by 夏泽民 Dec 4, 2021

es在查询时，可以指定搜索类型为QUERY_THEN_FETCH,QUERY_AND_FEATCH,DFS_QUERY_THEN_FEATCH和DFS_QUERY_AND_FEATCH。

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五类网线6类网线

Posted by 夏泽民 Nov 28, 2021

五类线的速度最高能达到100Mb/s，频率能达到100Mhz，所以说五类线可以支持百兆以下的网超五类线的速度最高能达到1Gb/s（1000Mb/s），频率也是100Mhz，超五类线可以支持千兆以下的网六类线的速度最高能达到10Gb/s，频率是250Mhz，六类线可以支持万兆网，主要用于万兆局域网等超六类线的速度最高能达到10Gb/s，频率是500Mhz，超六类线也可以支持万兆网 https://www.zhihu.com/question/20305170

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