Use select_related for Optimization
A snippet showing how to optimize queries with select_related.
# views.py
from django.shortcuts import render
from .models import Book
def book_list(request):
books = Book.objects.select_related("author").all()
return render(request, "books.html", {"books": books})
Explanation:
- select_related retrieves related author data in the same database query as the books.
- Prevents the "N+1 query" problem, so each book access does not trigger an extra query.
- Greatly improves performance when accessing related objects in templates or views.
- Category Performance & Optimization
- Total Views 727
- Last Modified 28 April, 2026
- Tags #performance #select_related #queries #optimization
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