Hi Norbert,

ooh sorry, it was absolutely NOT  my intention to critisize your
explanation I wanted to say it is  complicated for my small brain ;-) I am
very happy about your quick answer which helped me finding a solution for
my problem!!! sorry!

This was the post FROM Johan about the documentation:
http://forum.world.st/Cleaning-up-Voyage-Documentation-td4723834.html

LOL now, after writing the answer I understand the joke ;-) (of Johan, from
johan)

Sabine





On Wed, Nov 27, 2013 at 2:17 PM, Norbert Hartl [via Smalltalk] <
ml-node+s1294792n4725590...@n4.nabble.com> wrote:

>
> Am 27.11.2013 um 14:05 schrieb Sabine Knöfel <[hidden 
> email]<http://user/SendEmail.jtp?type=node&node=4725590&i=0>
> >:
>
> Hi Norbert,
>
> thank you very much for the clarification.
>
> I had to read it several times  but now I understand and I know what to
> change in my model for this (something with references to objects which
> have been deleted by the user).
>
> Yep, it _is_ a horrible explanation but the only one I can come up in a
> short timeframe :) Making it easily readably and clear would talk some more
> time.
>
> Perhaps your answer is also interesting for the documentation of Johan.
>
> Uh? I’ve never seen a documentation about Johan. That is a nice idea! I
> was always thinking about how to use him!
>
> Norbert
>
> Greets
> Sabine
>
>
> On Wed, Nov 27, 2013 at 1:44 PM, Norbert Hartl [via Smalltalk] <<a
> href="x-msg://256/user/SendEmail.jtp?type=node&amp;node=4725585&amp;i=0"
> target="_top" rel="nofollow" link="external">[hidden email]> wrote:
>
>>
>> Am 27.11.2013 um 13:20 schrieb Sabine Knöfel <[hidden 
>> email]<http://user/SendEmail.jtp?type=node&node=4725577&i=0>
>> >:
>>
>> > Hi Esteban, all,
>> >
>> > I work with mongo daily an it works fine, I am very happy with it.
>> >
>> > As you told me, with
>> >>> VORepository current reset.
>> > I can force re loading all objects from database and resetting the cache
>>
>> > completely.
>> > This is helpful for development eg. after changing the magritte
>> > descriptions.
>> >
>> Indeed. You need to flush/reset the repository in order to have new
>> descriptions to take effect.
>>
>> > My question:
>> > Is there a possibility to make a query and tell voyage that THIS query
>> > should be done within the database and NOT within the cached objets? And
>>
>> > that all objects and the child objects from this query are loaded
>> freshly
>> > from database into the cache.
>> >
>> All queries go to the database. The cache is just used at resolve time.
>> And it is necessary to have identical objects. Meaning you query the
>> database directly and then objects are materialized. If the object is
>> already in the cache the cached one is returned. Otherwise you would lose
>> identity because having two requests containing the same object as a result
>> would lead to two objects instead of one. You could only load trees instead
>> of a graph.
>>
>> > My concrete situation:
>> > I want that if the user logs in, his objects are loaded from database
>> and
>> > NOT from cache. This means the person, his trips etc.
>> >
>> > And the question coming along with this:
>> > How long does the cache keeps objects/when are they reseted (except the
>>
>> >>> VORepository current reset)?
>> > If I would never take a new image and never make a reset, would all
>> objects
>> > remain in the image (and the database objects wold never be read)? In
>> this
>> > case what about the size of the image?
>> >
>> I’m not sure on this one. I think the cache does not clean anything. The
>> thing about being able to load a graph I wrote above has also the
>> constraint that all loaded objects that are still participating in the
>> active graph need to be in the cache. But then the cache is a weak
>> dictionary meaning that all objects leaving the active graph are removed
>> from the cache (well at GC time, I think)
>> Norbert
>>
>> > Regards
>> > Sabine
>> >
>> >
>> >
>> > --
>> > View this message in context:
>> http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554.html
>> > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
>>
>> >
>>
>>
>>
>>
>> ------------------------------
>> If you reply to this email, your message will be added to the discussion
>> below:
>>
>> http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554p4725577.html
>> To start a new topic under Pharo Smalltalk Users, email <a
>> href="x-msg://256/user/SendEmail.jtp?type=node&amp;node=4725585&amp;i=1"
>> target="_top" rel="nofollow" link="external">[hidden email]
>> To unsubscribe from Mongo cache vs database objects, click here.
>> NAML<http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>>
>
>
> ------------------------------
> View this message in context: Re: Mongo cache vs database 
> objects<http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554p4725585.html>
>
> Sent from the Pharo Smalltalk Users mailing list 
> archive<http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html>
>  at Nabble.com <http://nabble.com/>.
>
>
>
>
> ------------------------------
>  If you reply to this email, your message will be added to the discussion
> below:
>
> http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554p4725590.html
>  To start a new topic under Pharo Smalltalk Users, email
> ml-node+s1294792n1310670...@n4.nabble.com
> To unsubscribe from Mongo cache vs database objects, click 
> here<http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4725554&code=c2FiaW5lLmtub2VmZWxAZ21haWwuY29tfDQ3MjU1NTR8MTA0OTM5MTYx>
> .
> NAML<http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>




--
View this message in context: 
http://forum.world.st/Mongo-cache-vs-database-objects-tp4725554p4725597.html
Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Reply via email to