[OpenSIPS-Users] Opensips Memory dr_rules

[Bogdan-Andrei Iancu]

Hi Nick,

The loading on startup is mandatory - it addresses not only the
avoidance of DB queries on runtime, but it also re-arranges the data in
a different format (for performance reasons) - data is record oriented
in DB, while after being loaded by DR, it is tree-based oriented. In a
record oriented format, the search is O(n) (where n is number of rules)
while in a tree the search is O(1).

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 06/07/2013 04:07 AM, Nick Khamis wrote:
> Bogdan, if we use a memchace and localcache hybrid can we somehow
> disable db load caching on startup? If not, are there still any
> performance benefits for using the cachedb directives or was that a
> pre 1.7 train of thought?
>
> The only one benefit I can see is a smaller subset of cached already
> executed routes that will be pulled from the main startup cached set.
>
> Kind Regards,
>
> Nick.
>
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