Hire Active Record Developer

Our Rails developers implement eager loading with includes, use scopes for reusable queries, and optimize SQL with select and pluck methods. We've optimized applications handling 50M+ records with query times under 100ms through proper indexing and query design.

We design efficient has_many, belongs_to, and has_many :through relationships, implement polymorphic associations, and use counter caches for performance. Our data modeling supports complex business relationships while maintaining query efficiency.

We design reversible migrations, implement safe schema changes for zero-downtime deployments, and use database-specific features. Our migration strategies support large-scale data transformations and maintain database integrity across environments.

We implement comprehensive model validations, use database constraints, and create custom validation methods. Our validation strategies ensure data quality while providing meaningful error messages and maintaining application performance.

We use factory patterns for test data, implement model specs with RSpec, and test database callbacks. Our testing approaches include validation testing, association testing, and database constraint verification.