Practical Guide to PostgreSQL Optimizations

Basic proficiency with PostgreSQL is one of the highest-leverage skills an engineer can have. Even a cursory understanding of its internals and configuration saves significant time: hours that would have otherwise been spent writing complex one-off…

Zero Downtime Migrations with ActiveRecord and PostgreSQL

Being Lazy with ActiveRecord

In programming language terms, “laziness” refers to code whose evaluation is delayed until the last possible moment. This strategy can have several benefits. For example:

nums = (1..1_000_000).lazy
squares = nums.map { |x| x * x }
squares.take_while {…

Auto-Labeling Pull Requests

As our engineering team continues to grow it’s becoming difficult to keep track of all the changes that we’re…

A Case for Composition

I’ve read way too many blog posts about inheritance versus composition. All of them revolving around the is-a versus…

Cultivating Friendgineers

rainbows, unicorns, and teamwork

Speed up CI builds with multi-stage Dockerfiles

Keeping Data in Sync with ActiveRecord::UpdatedAt

Meet the Team: Eduardo Del Balso

Welcome to our new series, Meet the Team, where we dive deep with a member of the tech team.