Django - How to efficiently paginate a large queryset with dynamic filter conditions?
I've encountered a strange issue with I'm working on a Django application and working with issues with paginating a large queryset. The basic requirement is to allow users to filter through records based on various dynamic conditions. However, when I try to paginate the queryset after applying filters, the performance drops significantly, and I frequently run into a `TimeoutError`. My current setup involves a model with around 100,000 records, and I'm using Django 3.2 with PostgreSQL 13. Here's a simplified version of my code: ```python from django.core.paginator import Paginator from django.shortcuts import render from .models import MyModel def my_view(request): query_filters = {} if 'status' in request.GET: query_filters['status'] = request.GET['status'] if 'date' in request.GET: query_filters['date__gte'] = request.GET['date'] queryset = MyModel.objects.filter(**query_filters) paginator = Paginator(queryset, 10) # Show 10 records per page page_number = request.GET.get('page') page_obj = paginator.get_page(page_number) return render(request, 'my_template.html', {'page_obj': page_obj}) ``` I've also tried to optimize the queryset using `select_related` and `prefetch_related` to reduce database hits, but it hasn’t helped much with the timeout issues. In addition, I enabled Django's query logging and noticed that the number of executed queries increases drastically based on the filters applied. What strategies can I employ to improve the performance of this pagination with dynamic filters? Any help would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Cheers for any assistance!