Why Migrate to Rails?
Legacy applications become increasingly expensive to maintain — developer productivity drops, security vulnerabilities accumulate, and adding new features takes longer. Ruby on Rails offers a mature, well-tested framework that dramatically improves velocity and reliability.
Step 1: Assessment and Planning
Map existing tables to Rails models, document business logic, identify external integrations, plan data migration strategy.
Step 2: The Strangler Fig Pattern
Don't rewrite everything at once. Route new features to Rails, gradually migrate existing features, eventually decommission the legacy system.
Step 3: Database Migration
Use Rails migrations to transform legacy schemas. Consider dual-write periods for zero-downtime migration.
Step 4: Business Logic Migration
Extract into service objects that can be tested independently.
Common Pitfalls
- Don't try to migrate everything at once
- Don't skip writing tests for migrated code
- Don't change business logic during migration
- Don't underestimate data migration complexity
Planning a legacy migration? Get a detailed estimate from our experienced migration team.
