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by michaelcampbell
3569 days ago
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A commercial DB that (also) does this HP Vertica. They tout a 4:1 to 5:1 compression ratio on average; due to the nature of the data the firm I work for stores in it, we get quite a bit better than that. Delta encoding is just one of maybe 5 different schemes it can use for a given column. |
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On a serious note: Please check out EventQL [0] some time. It's very similar to Vertica in some ways and completely open-source. It's a new project (beta) and not nearly as mature as vertica yet though (still a long way to go).
[0] https://eventql.io/