A visual comparison between DAOs and Repo patterns in Rails. The image shows two distinct sides: ‘DAOs’ with database icons and queries, and ‘Repo’ with abstracted data layers. At the center, the Rails logo unites both concepts in a high-tech setting.
Contrasting DAOs and Repos: A Visual Exploration of Data Patterns in Ruby on Rails.

Repository vs DAO Patterns in Rails

A Comparative Analysis with Examples


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In Ruby on Rails, understanding design patterns is crucial for creating maintainable and scalable applications. The Repository and Data Access Object (DAO) patterns are widely used for data access layers, but they serve different purposes, especially…



Alessio Bussolari

Ruby on Rails programmer since 2009. Current CTO at COSMIC SRL, where I lead the team in creating innovative solutions.