Rails Foundation Contributing Member
Ruby on Rails consulting from engineers who work deep in Rails.
Saeloun helps teams modernize Rails applications, improve performance, untangle production issues, and ship product work with a senior Rails and React team in Boston and Pune.
- 592+
- engineering articles
- 2019
- founded in Boston
- Rails
- Foundation member
Latest Rails, React, and engineering articles
Field notes on framework changes, performance, upgrades, testing, and product engineering.
My Ever-Improving AI Setup for Rails Work With gbrain and gstack
How I use Perplexity, Claude Code, Codex, Conductor, OpenClaw, gbrain, gstack, local LLMs, CodeRabbit, Copilot, browser sessions, evals, audit trails, and GitHub checks for private Rails development, with an Uploadcare rewrite case study.
Rails Security Best Practices: A Comprehensive Guide
Rails security best practices for 2026, updated for Rails 8.1.3, authentication generator, rate limiting, Brakeman, credentials, and CI security checks.Rails Authorization Patterns: Pundit, CanCanCan, and Action Policy
A practical Rails authorization guide for 2026 covering Pundit, CanCanCan, Action Policy, tenant scoping, API endpoints, background jobs, IDOR prevention, and tests that catch access-control bugs.Building a Private Karpathy-Style LLM Wiki With gbrain and gstack
How I use a private Karpathy-style LLM Wiki, gbrain, and gstack to train an AI assistant on my own work signals for Rails development, writing, and reviews.Different Approaches to Debugging Query Performance in Rails
A comprehensive guide to debugging and optimizing query performance in Rails applications using built in tools, gems, and database specific utilities for PostgreSQL, MySQL, and SQLite.Ruby Concurrency Beyond Fibers: Threads, Ractors, and True Parallelism
A practical guide to Ruby's concurrency primitives beyond fibers, covering Threads, Ractors, and how to achieve true parallel execution in Ruby applications.Upgrading from Rails 7.2 to Rails 8 - The Latest and Greatest
A practical guide to upgrading from Rails 7.2 to Rails 8 with Solid Queue, Solid Cache, built-in authentication, and Ruby 3.4 performance improvements.Upgrading from Rails 6.1 to Rails 7 - The Modern Stack
A practical guide to upgrading from Rails 6.1 to Rails 7 with Import Maps, Hotwire, Ruby 3 compatibility, and encrypted attributes.From Idea to Launch: Why Rails Remains the Ultimate MVP Framework in 2026
Discover why Ruby on Rails remains the go to framework for building MVPs quickly and efficiently, helping startups validate ideas and reach market faster.
Rails 8.1 introduced except_on option for validations and callbacks
To skip validations for particular contexts, Rails added `except_on` option for validations and callbacks.