Building My Own Canva Over a Weekend
I was manually turning generated children's books into Instagram carousels, hit the limit of “doing things that don't scale,” and built a focused internal editor to make the workflow deterministic and fast.
Catalin Ionescu’s Blog
Director, Application Engineering @ Mon Ami
Latest posts
Building an AI agent inside a 7-year old Rails application
We run a multi-tenant Rails application with sensitive data and layered authorization. In this post, I walk through how I added the first AI agent tool using RubyLLM, Pundit policies, and our existing Algolia search, without introducing a parallel system or loosening constraints.
How to connect to multiple databases in Ruby on Rails 7
A deep dive into connecting to multiple databases with Ruby on Rails exploring multiple use-cases such as read-replicas and reading from legacy sources.
How to fix 'Too many open files' error in RSpec & Capybara?
Running `ulimit -Sn 10240` exposed the failed expectation behind an `Errno::EMFILE` error in my RSpec and Capybara test.
How to Create the Initial Postgresql Database?
You just installed PostgreSQL and attempt to run psql and get the following error: FATAL: database 'user' does not exist. Here's how to fix it
Implicit Declaration of Function is Invalid in C99
I ran into this error when installing the thin Ruby Gem on MacOS and found the solution.