On Mon, Mar 2, 2009 at 12:56 PM, Dan <[email protected]> wrote: > > Hi everyone, > > I'm trying to create some lazy querying classes in my code to minimize > the number of queries run per request. Suppose, for example, I wanted > to store all the comments on a site in a variable, cached_comments, > which is part of an application, Blog. (Note, I'm not actually doing > anything this silly, but my work is confidential so this serves as an > illustrative but silly example.) > > So Blog.cached_comments is lazy and will only run a query to get the > data if (a) it hasn't run the query yet, (b) something tries to access > it. If someone adds a new comment, a function, > Blog.cached_comments.reset() is called which will set the state of > cached_comments to 'query not run yet.' > > However, I'm a little confused, as it seems like as Apache runs > multiple processes, there could be multiple copies of > Blog.cached_comments floating around, each with differing data. Is > this correct? I know this is more of a mod_python question, but I > thought I'd ask it here as I'm not able to find the information I'm > looking for and it seems like django might be using some similar > structures to determine what fields in a form are changed. Any help > or readings that could be suggested would be greatly appreciated. > > Thanks, > Dan > > > > Yes, this is correct, the best way to handle something like this is with a real caching system that is seperate from your python processes, specifically memcache. Checkout the Django caching docs for how to use it with Django.
Alex -- "I disapprove of what you say, but I will defend to the death your right to say it." --Voltaire "The people's good is the highest law."--Cicero --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
