What is database indexing in Django?

What is database indexing in Django?

Database indexing in Django is a technique to optimize query performance by creating a data structure that improves the speed of data retrieval.

How do I create an index in a Django model?

You can create an index in a Django model by using the indexes option in the model's Meta class. For example:

class MyModel(models.Model):
    field_name = models.CharField(max_length=100)

    class Meta:
        indexes = [models.Index(fields=['field_name'])]

What are the benefits of using indexes?

Indexes can significantly speed up query performance, especially for large datasets, by reducing the amount of data the database needs to scan.

Are there any downsides to using indexes?

Yes, while indexes improve read performance, they can slow down write operations (like inserts and updates) because the index also needs to be updated.