Middleware in Rails - FastRuby.io | Rails Upgrade Service
Learn how Rails middleware works, why it matters, and how to use it to handle requests, responses, and custom logic in your Ruby on Rails applications.
Testing in Ruby: From Scratch to Minitest and RSpec
The complete Ruby testing tutorial: understand fundamentals by building a test framework, then explore Minitest, RSpec, and Rack::Test with practical examples.
Personal Site Andrew Atkinson. PostgreSQL. Ruby on Rails, Elasticsearch, Kubernetes, Vim. Author High Performance PostgreSQL for Rails Pragmatic Programmers
New trend: programming by kicking off parallel AI agents
More devs are experimenting with kicking off coding agents in parallel. Also: comparing interviews at Meta, Amazon, Uber, and 5 other large tech companies
Cognition | Introducing SWE-1.5: Our Fast Agent Model
Today we’re releasing SWE-1.5, the latest in our family of models optimized for software engineering. It is a frontier-size model with hundreds of billions of parameters that achieves near-SOTA coding performance. It also sets a new standard for speed: we partnered with Cerebras to serve it at up to 950 tok/s – 6x faster than Haiku 4.5 and 13x faster than Sonnet 4.5. SWE-1.5 is now available in Windsurf!
With custom instructions, you can guide Copilot on how to understand your project as well as how to build, test, and validate its changes. Copilot coding agent, our autonomous background…
I’ve had a version of this post in draft mode for over a year, but today Jean Boussier (@byroot) has a great post about Frozen String Literals in Ruby. Serio...
Custom images for GitHub-hosted runners are now available in public preview - GitHub Changelog
Custom images for GitHub-hosted runners are now available in public preview. This feature allows you to start with a GitHub-curated base image and build your own virtual machine image tailored…