What is Active Record indexing in Rails?

What is Active Record indexing in Rails?

Active Record indexing in Rails refers to the use of database indexes to improve query performance by speeding up data retrieval.

How do I create an index in a Rails migration?

You can create an index in a Rails migration using the add_index method, like this: add_index :table_name, :column_name.

Are there any best practices for indexing?

Yes, some best practices include indexing columns that are frequently queried, avoiding over-indexing, and considering composite indexes for multiple columns.

Can I remove an index later?

Yes, you can remove an index using the remove_index method in a migration, like this: remove_index :table_name, :column_name.