For basic caching strategies, it might be easier to use a caching framework. Among the popular ones are django-cache-machine and django-cachalot. They can handle common scenarios, such as automatically caching results of queries to avoid database hits every time you perform a read.
The simplest of these is Django-cachalot, a successor of Johnny Cache. It requires very little configuration. It is ideal for sites that have multiple reads and infrequent writes (that is, the vast majority of applications), it caches all Django ORM-read queries in a consistent manner.
