[ZODB-Dev] conflict errors in persistent ZEO client cache

[Jeff Shell]

On Sep 25, 2008, at 6:31 AM, Jim Fulton wrote:
> On Sep 25, 2008, at 1:12 AM, Jeff Shell wrote:
>> In ZODB 3.8.0, while prepping a customer's site to go from staging to
>> production and doing a fair amount of big operations, we started
>> seeing conflict errors. It was a 200MB cache size, with a persistent
>> client cache. Keeping the same cache size (against a base storage of
>> about 700MB) but turning off the persistent client cache seemed to
>> make the problem go away.
>>
>> The persistent cache file at the time of the conflict error was close
>> to 200MB in size, but doesn't it always go to the size configured,
>> regardless of how much data is inside?
>
> Since ZODB 3.8.0, I have fixed *many* ZEO cache bugs.  What you  
> describe is one symptom.  I suggest upgrading to 3.8.1b8.

Just to follow up and hopefully help get 3.8.1 out the door - trying  
these sites and configurations on 3.8.1b8 worked much better than on  
3.8.0.

Thanks,
Jeff Shell
jeff at bottlerocket.net