Django Rest Framework - Performance

• each serializer call is a query, each query adds up, do your best to serialize as little as possible
  • can often set a serialization to a variable that can be reused throughout the method
• prefetch when possible

  self.queryset = self.get_queryset().prefetch_related(
    'policy',
    'policy_group_snapshot__agency',
    ...
  )
  
  ...
  
  working_version = self.queryset.get(id=id)

• can specify to only update specific fields version.save(update_fields=['extension'])