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.

599+
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.

authorImg Romil Mehta
authorImg Romil Mehta

Romil is a Ruby on Rails Developer who enjoys putting together the technical pieces making sure everything runs smoothly.

Rails Action Cable Adds Stream Unsubscribe

Rails adds ActionCable::Channel#stop_stream_from and ActionCable::Channel#stop_stream_for methods to allow user to unsubscribe from specific stream
authorImg Prajakta Tambe
authorImg Prajakta Tambe

Prajakta, a founding team member, is a proficient Ruby on Rails Developer with extensive expertise in developing scalable and efficient web solutions.

Rails Adds round_mode to Number Helpers

Rails has added :round_mode parameter support to number helpers
authorImg Narendra Rajput
authorImg Narendra Rajput

Narendra is an Engineering Manager and a Ruby on Rails expert with over 11 years of experience. He’s a core engineer at Saeloun, known for his technical excellence and influence that extends beyond code.

Ruby 2.7 Warns Setting $ Special Variables

In Ruby 2.7, setting special variable $, $; $/ $\ to non-nil values will now show a deprecated warning
authorImg Puneet Sutar
authorImg Puneet Sutar

Puneet, a highly proficient Senior Developer, specializes in crafting engaging user interfaces with React and scalable backend solutions with Ruby on Rails.

Eager Loading Active Storage to Avoid N+1

Removing N+1 queries when we access the Active Storage attachments associated with an ActiveRecord model.
authorImg Aditya Narsapurkar
authorImg Aditya Narsapurkar

Aditya is a Senior Software Developer who combines his expertise in Ruby on Rails and ReactJS to create highly performant and scalable web applications.

Rails Adds Jitter to ActiveJob retry_on

Rails adds jitter to ActiveJob::Exceptions.retry_on to cater to thundering herd effect
authorImg Prateek Choudhary
authorImg Prateek Choudhary

Prateek focuses on delivering impactful and reliable digital products.

Ruby Hash#transform_keys Accepts Key Mapping

Ruby Hash#transform_keys now also accepts a hash that maps the existing hash keys to new keys
authorImg Rohit Kumar
authorImg Rohit Kumar

Rohit is a Senior Software Engineer with 11 years of experience in Ruby on Rails. He is one of Saeloun’s key engineers, known for his deep technical insights and impact beyond just code.

Rails Adds Strict Loading to Prevent Lazy

Rails has added strict loading mode to prevent lazy loading of associations and help avoid N + 1 queries
authorImg Karthik Sivadas
authorImg Karthik Sivadas

Karthik is a Ruby on Rails Developer who focuses on building scalable solutions.

Rails adds config rake_eager_load

Rails has added the option to eager load all the registered name spaces in rake tasks.
authorImg Rohit Kumar
authorImg Rohit Kumar

Rohit is a Senior Software Engineer with 11 years of experience in Ruby on Rails. He is one of Saeloun’s key engineers, known for his deep technical insights and impact beyond just code.

Rails Adds Automatic Database Connection

Rails has added support for automatic database connection switching from primary to the replica
authorImg Prateek Choudhary
authorImg Prateek Choudhary

Prateek focuses on delivering impactful and reliable digital products.

Ruby 2.7 removes taint checking mechanism

Ruby 2.7 access and setting of $SAFE is now always warned. $SAFE will become a normal global variable in Ruby 3.0