QRESYNC

[Ken Murchison]

Sorry for the late response.  I also agree that (1) seems like the best 
option.


Robert Mueller wrote:
>> 1) Pro:
>>   * simple to calculate - only updated by cyr_expire
> 
> "simple" seems good :)
> 
>> 1) Con:
>>   * Higher bandwidth use in the "stale client" case.
> 
> If you're not syncing that often, then there's probably enough other
> stuff that needs downloading that it'll swamp the bandwidth anyway.
> 
>> 2) Con:
>>    * Extra bookkeeping - need to update a different record when
>>      removing an expired record.
>>    * Replication implications - cyr_expire and replication is already
>>      going to be tricky - but probably means arbitrary bumping of
>>      modseq on the previous record to guarantee it replicates.  More
>>      spurious modseq bumps.
> 
> These seem a bit scary to me.
> 
> I'd lean towards (1). Simpler to implement, less side effects, less
> chance of odd edge case bugs or replication issues. Slightly more
> bandwidth if you don't sync regularly.
> 
> Rob
> 

-- 
Kenneth Murchison
Systems Programmer
Carnegie Mellon University