The Ruby and Rails community linklog
Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!
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Note: Only the first pargraph is shown on the front page and overly long paragraphs may be broken up.
Currently, you can easily find several blog posts and tutorials explaining how to build your own Lambda functions in Ruby, most of them using the famous Hello World as example, which is good as a starting point, but, let’s be honest, you won’t need to build something as simple as a Hello World. You will need to face real-world issues regarding automated testing, using other services, building/deploying, handling dependencies, etc. [more inside]
The Ruby Toolbox is a website that tries to make finding popular and maintained open source Ruby libraries easier. In a recent community survey many users requested a better way to see the maintenance status of libraries. Today, I have launched new project health indicators to help with that.
A journey of moving our slack bot from Heroku to AWS Lambda: https://medium.com/@pawelpacana/serverless-slack-bot-on-lambda-with-ruby-f43e199f8e35
Hey! I’d like to share a simple technique for reducing memory usage in Rails apps by splitting gems into web- and worker-related groups and loading only what’s necessary: https://www.gregnavis.com/articles/how-to-reduce-memory-usage-by-tuning-gemfile.html
Did you know how simple it is to access the clipboard from Ruby? It’s just
Clipboard.paste when you use the clipboard gem. The newest release includes support for WSL, the Windows Subsystem for Linux.
This post is the closing post of a series on mastering data structures in Ruby where I introduce the concept of persistent data structures, a term coined by Driscoll in an article from 1986 that these days it’s at the core of most purely functional data structures. On this article, I’ll review the core aspects of persistent data structures and show you how to implement persistent, immutable linked lists using the Ruby programming language. I hope you like it! Mastering data structures in Ruby — Persistent lists
This article shows how to build a ruby lambda with some additional gems (and specs) to create a private Slack notification when CircleCI builds fail. [more inside]
I tried to summarize the most painful mistakes we made in the early phases of rails project. Enjoy and share your thoughts: https://codecoding.net/ruby/on/rails/2018/12/07/top-5-mistakes-in-early-rails-project.html
You may want to use the “citext” Postgres type to clean up messy downcase code when looking up slugs/emails/etc in your Ruby/Rails app. In this decision, I quickly explain how this works!
https://blog.kiprosh.com/upgrade-ruby-on-rails-0eda77ac-6ba2-4893-8001-9a033702f9ef/ For the past few months at Kiprosh, we’ve done versions upgrade of multiple mid to large scale Ruby on Rails applications. One of them was running Rails version 3.2.22. That’s where we found out that, we need to make a lot of changes in our codebase to run our application on version 4.0. Hence, we thought to write this blog post to share our insights and recommended strategies for upgrading such mid to large Rails applications.
https://medium.com/@rajagopals/activerecord-on-mysql-iterating-over-large-tables-with-conditions-453bd8761c8b . In a high volume analytics system, tables with millions of records are quite common and iterating over the full table or a subset of these tables becomes often necessary — whether it’s to perform computations, run a migration, or create parallelized background jobs on the records. It becomes important to write efficient code for iterations because there is often an order of magnitude difference between a good and not-so-good approac