Master Ruby on Rails with practical tutorials, best practices, performance tips, and real-world techniques for building modern web applications.
Learn how Rails scopes make Active Record queries cleaner, reusable, and easier to maintain with practical examples.
Learn how Rails cache keys work, including cache_key, cache_key_with_version, fragment caching, and cache invalidation.
Learn the difference between pluck and select in Rails, what SQL each generates, and when to use them in Active Record queries.
Learn when to use find_each vs. each in Rails, how batching works, and how to process large datasets without memory issues.
Learn the difference between Rails joins and left_joins, how each generates SQL, and how to avoid common query mistakes.
Learn how Rails Credentials work: encrypt secrets, secure your master key, and manage config safely in development and production.
Learn how Rails transactions work: ActiveRecord commits, rollbacks, savepoints, and after_commit callbacks explained.
Compare Active Job and Sidekiq in Rails: features, performance, reliability, setup, and when to use each for background jobs.
Compare Ruby on Rails and Django in 2026 across performance, scalability, development speed, ecosystem, and use cases.
Compare Devise and custom authentication in Rails, including security, flexibility, complexity, maintenance, and when to use each.
