... someone just closed it.
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Efficiency of code is definitely on topic, but while the object and its 2 methods may be very efficient how the functions are called may not be. Did you have to add any hooks to Django to call these functions? How is the code executed? Is
get_response part of the Django framework (CMS) or was it written in another part of the middle ware? I believe that is one of the functions that access the database but I can't be sure. Context of how code is used is very important when talking about efficiency.
You have already asked one question that has never been answered. This is another question that may go unanswered because there is not enough context for us to provide an answer.