On 2010-03-29, Juan Backson <juanbackson@gmail.com> wrote:
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> Hi,
>
> I am using Postgres to store CDR data for voip switches. The data size
> quickly goes about a few TBs.
>
> What I would like to do is to be able to regularly archive the oldest data
> so only the most recent 6 months of data is available.
>
> All those old data will be stored in a format that can be retrieved back
> either into DB table or flat files.
>
> Does anyone know how should I go about doing that? Is there any existing
> tool that can already do that?
>
> thanks,
> jb
FWIW, I partition by ISO week, use INSERT RULEs to route CDRs to the correct
partition (keeping about 3 partitions "open" to new CDRs at any one time),
use pg_dump to archive partition tables to off-line storage, and
DROP TABLE to keep the main DBs to about 40 weeks of data. I used
to use monthly partitioning, but the file sizes got a bit awkward
to deal with.
When I need to restore old CDRs (e.g. to service a subpoena) I
use pg_restore to load the needed CDRs to a throwaway database
and process as necessary.