[erlang-questions] Mnesia Backup/Fallback Problems With Schema

Gordon Guthrie <>
Sun Jun 10 22:43:03 CEST 2012


> Generally in KV stores you want to store as much information in a row
> as possible, there is no way to coalesce the row information together?
>  And Riak has support for secondary indexes (as of 1.0 I think?) to
> enable fast lookup on other cells too.

There are relations that need to be managed - moving them to relations
between rows in the same table doesn't help.

Gordon

On 10 June 2012 21:18, OvermindDL1 <> wrote:
> On Sun, Jun 10, 2012 at 4:47 AM, Gordon Guthrie <> wrote:
>>> A single process handling a specific set of rows would handle that in
>>> most cases?  What are the transactions needed for?  No way to work
>>> around?
>>
>> You need to co-ordinate the update to several tables and roll back and
>> restore on failure - either use a TM or write one - better not to
>> write your own..
>
> Generally in KV stores you want to store as much information in a row
> as possible, there is no way to coalesce the row information together?
>  And Riak has support for secondary indexes (as of 1.0 I think?) to
> enable fast lookup on other cells too.



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