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Published 20 hours ago • verified publisher icon terma
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Extremely fast and compact in-memory embedded column oriented database

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Can we use Trie to speed up raw string search?

https://en.wikipedia.org/wiki/Trie

terma avatar terma

enhancement

Compare with Druid

https://github.com/eBay/embedded-druid

terma avatar terma

Compare with CQEngine

https://github.com/npgall/cqengine

terma avatar terma

question

String data should automatically select best storage strategy

For example you today you have data with cardinality 100 but tomorrow for same column it's 200. Lib should automatically switch to short dictionary instead of error as now ```...

terma avatar terma

enhancement

Speed up request for plain string data

2 comment

from ``` byMultipleString 10000000 avgt 5 1523.173 ± 80.155 ms/op byString 10000000 avgt 5 612.183 ± 72.304 ms/op byNoCaseLikeString 10000000 avgt 5 2851.732 ± 154.023 ms/op ``` to ``` byMultipleString...

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Fast no case contains for plain string data

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enhancement

Use block meta info for plain string data type

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enhancement

Use block meta info for no case filter

ftp://ftp.unicode.org/Public/UCD/latest/ucd/CaseFolding.txt

terma avatar terma

enhancement

For compressed data include dictionary size to mem()

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enhancement

Provide usage statistic

- average select time - average select and sort time - share by JMX

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enhancement

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Extremely fast and compact in-memory embedded column oriented database

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