Is Redis key-value or wide column store database ?

[Gkn Knc]

Hi,


In the official website we can read : "Redis is an open source, BSD licensed, advanced key-value cache and store."
But we can have multiple values per key... so why Redis is key-value type and not wide column store database ?


Thanks,

[Paulino Huerta]

(column, wide column) <-  That's a different kettle of fish

Regards

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[Gkn Knc]

What is the subtility ?

[Jan-Erik Rediger]

A key can only point to one value.
This value can be a string, a list, a set, a sorted set, ...

That's why it is still a key-value store (though the homepage was just
changed to *data structure store*).

On Thu, Sep 03, 2015 at 07:17:21AM -0700, Gkn Knc wrote:
> Hi,
>
>
> In the official website we can read : "Redis is an open source, BSD

> licensed, advanced *key-value* cache and store."

> But we can have multiple values per key... so why Redis is key-value type
> and not wide column store database ?
>
>
> Thanks,
>

[Paulino Huerta]

Redis does not know that is a column.

Redis knows "Keys" and "values"

If you prefer to think independently definition "Redis" as a server data structures (strings, hashes, sets, lists ...)

[Greg Andrews]

I've never heard the term "wide column store database" before.  Reading the Wikipedia entry for "wide column store", the definition says only that it's "a type of key-value database".  That entry was created less than two months ago.  Looking at the references on the db-engines.com website, there isn't really a solid description of the difference between "key-value store" and "wide column store".

I believe Redis doesn't describe itself as a wide column store database because that term did not exist when Redis was created.  The term that existed and best described Redis was "key-value store".

  -Greg

--

[Itamar Haber]

> the homepage was just
changed to *data structure store*

I think that's a good change - it captures the essence of what makes Redis different from the rest of the KV gang.