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From Dan Kuebrich <dan.kuebr...@gmail.com>
Subject Re: Appending to fields
Date Tue, 31 May 2011 21:03:30 GMT
On Tue, May 31, 2011 at 4:57 PM, Victor Kabdebon
<victor.kabdebon@gmail.com>wrote:

> As Jonathan stated I believe that the insert is in O(N + M), unless there
> are some operations that I don't know.
>
> There are other NoSQL database that  can be used with Cassandra as
> "buffers" for quick access and modification and then after the content can
> be dumped into Cassandra for long term storage. Here is an example with
> Redis :
>
> http://redis.io/commands/append
> The "append" command is said to be in O(1) but it is a little bit
> suspicious to me...
>
> Best regards,
> Victor Kabdebon
> http://www.voxnucleus.fr
>

I think perhaps OP meant O(N * M), where N is number of rows and M is total
bytes.

Either way, won't cassandra be effectively buffering appends in memtable
(well, also appending to commit log) until flush occurs to sstable?

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