Cache mixin for Django class based views.

cached_mixin.py

class CachedMixin(object):
    def get(self, *args, **kwargs):
        cache_key, cache_ttl = self.get_cache_params(*args, **kwargs)
        response = cache.get(cache_key)
        if response is None:
            response = super(CachedMixin, self).get(*args, **kwargs)
            response.render()
            cache.set(cache_key, response, cache_ttl)
        return response

    def get_cache_params(self, *args, **kwargs):
        """This method should return cache key and value TTL."""
        raise NotImplementedError('Please, implement get_cache_params method.')