索引列存储压缩

Elasticsearch压缩索引——lucene倒排索引本质是列存储+使用嵌套文档可以大幅度提高...

size:14.4Mi(14.4Mi)docs:1,000,000(1,000,000)这说明了lucene在底层用列式存储这些字符串的时候是做了压缩的。这个要是在某个商业列式数据库里，就这么点优化都是要大书特书的dictionary encoding优化云云。Nested Document 实验表明把一...

Druid.io索引过程分析——时间窗，列存储，LSM树，充分利用内存，concise压缩

第三，使用不同的压缩算法进行压缩，其中默认使用LZ4，对于字符类型列采用字典编码(Dictionary encoding)进行压缩，对于位图索引采用Concise/Roaring bitmap进行编码压缩。最终的输出结果也就是Segment。下面，我们先讲解Druid的索引过程中...

索引更多"列存储"相关

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索引压缩列存储相关内容

.压缩索引lucene .压缩索引文档 .索引压缩doc .压缩索引使用 .索引压缩倒排

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云数据库 HBase 版

云数据库HBase是面向大数据领域的一站式NoSQL服务，100%兼容开源HBase并深度扩展，支持海量数据下的实时存储、高并发吞吐、轻SQL分析等，是风控、推荐、广告、物联网、车联网、Feeds流、数据大屏等场景首选数据库。

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