I'm not sure it's really a singleton that I need because I need a different
value for each thread. I'm using threading.local for it, so far I haven't
run into any issues, but I'd like to hear the opinion of a more experienced
django developer.
I save in cache the possible IPs of the backend system and I open
connections to it when needed inside a threading.local subclass. I use an
object from such class in order to retrieve a connection.
The threading.local subclass is instantiated in a module variable, I could
use the singleton class you pointed out as well. But I don't see the need
for it in my case.
On Friday, December 14, 2012 5:38:59 PM UTC-2, Chris Cogdon wrote:
>
> What you essentially want is a common pattern called a "singleton":
> something that there is only one of, like "None" and "Elipsis". You can do
> something workable, but ugly, using module-level variables, but there are
> known patterns for creating singletons
>
> Here's some starters:
>
> http://stackoverflow.com/questions/42558/python-and-the-singleton-pattern
>
>
>
>
> On Friday, December 14, 2012 9:33:19 AM UTC-8, Rafael Almeida wrote:
>>
>> Hello,
>>
>> I have a django application which needs to connect to some backend
>> services. Problem is I don't want to create a new connection everytime, but
>> to use a connection pool. One connection per thread would be fine, but I
>> don't know how to use django in order to achive that. I'd like to perhaps
>> save those connections on cache subsystem, but I don't know how to create
>> one key per thread, per worker.
>>
>> Thank you for your help,
>> Rafael
>>
>
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