[LON-CAPA-admin] Problem with Resources Getting Renamed?

[Todd Ruskell]

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Gerd Kortemeyer wrote:
> Hi,
> 
> On Jan 29, 2009, at 12:18 PM, Todd Ruskell wrote:
>>
>>
>> And also, why did it only impact the library server, and not the access
>> servers.  Shouldn't that be tied to the course, not the servers?
> 
> Yes, that is really weird! You had the same course and the same role on
> both machines?

Yep.  CC for the same course on all machines.

> One thing that could have an influence here is the cache. To reduce the
> number of transactions between servers, LON-CAPA for a limited time
> stores such things as associations between internal identifiers
> ("symbs") and resource URLs and versions. Caches affect all processes on
> one server. Looks like we might be writing garbage into those when it
> comes to which version of a resource to pull up.

Yes, I thought a bit about caching.  But it was first reported a good 16
hours before I sent my email and had time to look into it, so I would
have expected caching effects to have propagated thoroughly in that
amount of time.

Todd
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