Advanced Serializer Optimization and Performance

from rest_framework import serializers
from django.db.models import Prefetch
from .models import Author, Book

class BookSimpleSerializer(serializers.ModelSerializer):
    class Meta:
        model = Book
        fields = ['id', 'title']

class AuthorWithBooksSerializer(serializers.ModelSerializer):
    books = BookSimpleSerializer(many=True, read_only=True)
    book_count = serializers.SerializerMethodField()
    
    class Meta:
        model = Author
        fields = ['id', 'name', 'books', 'book_count']
    
    def get_book_count(self, obj):
        return obj.books.count()

class AuthorListView(generics.ListAPIView):
    serializer_class = AuthorWithBooksSerializer
    
    def get_queryset(self):
        return Author.objects.prefetch_related(
            Prefetch('books', queryset=Book.objects.filter(published=True))
        )