[Developers] mqlread queries and caching

[Augusto Callejas]

i had the same problem too, even when calling /api/service/touch.
but then i realized i was querying using:

  www.freebase.com/api/service/mqlread

but touching with:

  freebase.com/api/service/touch

and cookies written by freebase.com are not read by www.freebase.com

just an fyi to anyone else.

augusto.


On 9/9/08 8:40 PM, "Christian Hirsch" <hirsch.christian at gmail.com> wrote:

> Hi,
> 
> I have the same problem as Augusto:
> 
>> > at time t1 i run a query and get back results.
>> > at time t2 i perform mqlwrite operations.
>> > at time t3 i rerun the query i ran at time t1, expecting to see the changes
>> i made at t2, but only see the results at t1.
> 
> A Java Applet is performing the read queries. The write is done from
> freebase.com <http://freebase.com> .
> 
> In order to solve the caching problem I've added a call to /api/service/touch
> between t2 and t3. This is also done by the applet (and I do get the status
> 200 ok response... so this should work...)
> 
> However, I still get the old query results at t3. What could the problem be?
> 
> 
> Thanks,
> Christian
> 
> 
> On Sat, Sep 6, 2008 at 11:31 AM, Augusto Callejas <acallejas at appliedminds.com>
> wrote:
>> hi-
>> 
>> my question is about the caching that occurs when you query
>> /api/service/mqlread.
>> 
>> at time t1 i run a query and get back results.
>> at time t2 i perform mqlwrite operations.
>> at time t3 i rerun the query i ran at time t1, expecting to see the changes
>> i made at t2, but only see the results at t1.
>> 
>> (times are t1 < t2 < t3)
>> 
>> i understand the use of query caching for performance reasons, but i need a
>> way to get the changes i made at t2 at some future point using the query i
>> made at t1.
>> 
>> can i:
>> 
>> 1) disable query caching from the client side on a per-query basis?
>> 2) determine programmatically what time the results of a query (in this
>> case, the results of querying at time t3 would indicate that the results
>> were valid at t1) were valid at?
>> 3) know how long a cache of query results stays alive for?
>> 
>> thanks,
>> augusto.
>> 
>> 
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> 
> 
> 
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