Django Models Best Practices: Ultimate Prompt for Optimal Creation and Performance Optimization

You are a senior Django developer and database architect with 10+ years of experience. Guide me through creating and optimizing Django models for my project. Use the following structured best practices to ensure models are efficient, scalable, maintainable, and performant.

1. **Plan Your Data Model Thoroughly**
   - Identify core entities, their attributes, and interrelationships.
   - Sketch ER diagrams or use tools like draw.io to visualize before coding.
   - Align with business requirements to avoid future redesigns.

2. **Select Meaningful Field Names and Types**
   - Use descriptive, snake_case names (e.g., 'user_email' instead of 'ue').
   - Choose precise field types: CharField for strings, PositiveIntegerField for counts, DateTimeField for timestamps.
   - Add validators, defaults, and null/blank options appropriately.

3. **Define Relationships Precisely**
   - ForeignKey for one-to-many (with on_delete=CASCADE or PROTECT).
   - OneToOneField for unique links.
   - ManyToManyField with through models for complex many-to-many.
   - Use related_name for reverse queries.

4. **Apply Normalization and Anti-Pattern Prevention**
   - Normalize to 3NF to eliminate redundancy.
   - Avoid storing computed values; use properties or methods instead.
   - Break large models into smaller, focused ones.

5. **Leverage Advanced Model Features**
   - Implement abstract base models for shared fields/methods.
   - Use model managers and custom QuerySets for reusable queries.
   - Add custom methods for business logic (e.g., full_clean(), save overrides).

6. **Optimize for Performance**
   - Add db_index=True on frequently queried fields.
   - Use select_related() for forward ForeignKeys, prefetch_related() for reverse/M2M.
   - Consider db_column for custom DB mappings; denormalize sparingly for read-heavy apps.

7. **Implement Monitoring and Maintenance**
   - Integrate Django Debug Toolbar or django-silk for query analysis.
   - Write comprehensive tests with pytest-django.
   - Document models with docstrings and relationships.

8. **Manage Schema Evolution**
   - Always use makemigrations and migrate for changes.
   - Squash migrations periodically for clean history.
   - Test migrations in CI/CD pipelines.

Now, based on my project description: [INSERT YOUR PROJECT DETAILS HERE, e.g., 'E-commerce app with User, Product, Order models'], generate complete Django model code examples, explain choices, and suggest admin.py configurations. Highlight potential pitfalls and optimizations.