[Building Sakai] realmRoleGroupCache 100% miss.

[Aaron Zeckoski]

The cache as implemented in
https://jira.sakaiproject.org/browse/KNL-600 does not work right so it
definitely should NOT be turned on be default. See the notes in the
ticket for more details.
-AZ


On Fri, Aug 17, 2012 at 1:41 AM, Steve Swinsburg
<steve.swinsburg at gmail.com> wrote:
> Hi all,
>
> In trunk and in 2.9 I'm seeing a 100% miss ratio on the following cache. This cache is not present in 2.8. I checked the 2.9 Qa servers and they show the same thing.
>
> org.sakaiproject.authz.impl.DbAuthzGroupService.realmRoleGroupCache: count:0 hits:0 misses:2507 hit%:0
>
> On another instance I had over 8000 misses in an hour.
>
> Last change to the kernel authz-components.xml (where this cache is defined) was r105160, done in https://jira.sakaiproject.org/browse/KNL-532
>
> The previous commit was where this cache definition was added which was r85976, done in https://jira.sakaiproject.org/browse/KNL-600
>
> Looking through the code I see that is is controlled via this in sakai.properties, and defaults to false
>
> authz.cacheGrants = true/false
>
> I wonder if we should enable this one by default?
>
> Dave I've copied you in since you added the cache, how has your experience been with it?
>
> cheers,
> Steve
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-- 
Aaron Zeckoski - Software Architect - http://tinyurl.com/azprofile