Hi, we're Arkency blog.arkency.com

The timezone bug that hid in plain sight for months

blog.arkency.com·1w

Stop using DateTime in 2026 (unless you work for UNESCO)

blog.arkency.com·4w

Adding multi-tenancy to a DDD Rails app

blog.arkency.com·6w

Rewrite with Confidence: Validating Business Rules Through Isolated Testing

blog.arkency.com·7w

Making race condition tests deterministic with Concurrent::CyclicBarrier and seam

blog.arkency.com·13w

The Joy of a Single-Purpose Class: From String Mutation to Message Composition

blog.arkency.com·15w

Rails 8 upgrade story: duplicate keys sneaking into our JSON responses

blog.arkency.com·20w·

Discuss: Hacker News

Evolving event names and payloads in Rails Event Store without breaking history

blog.arkency.com·22w

Watch out for this one deprecation warning when upgrading from Rails 7.1 to 7.2 on Heroku

blog.arkency.com·28w

Breaking the Singleton: How to Reload Ruby Singleton Instance

blog.arkency.com·32w

Stop concatenating URLs with strings — Use proper tools instead

blog.arkency.com·32w

5 gems you no longer need with Rails

blog.arkency.com·33w

I do not blindly trust setting things in new_framework_defaults initializers anymore

blog.arkency.com·35w