Announcing a new gem for cursor-based pagination in rails - github.com/fatkodima/acti… It is very simple, yet powerful! 💪It has the pieces missing in all other gems like iterating by multiple columns, multiple directions, iterating over joins or ordering by custom SQL expressions.

A simple trick I recently discovered. Probably will be the most useful for Sidekiq users.

Got a chance to apply a "shitlist" technique (sirupsen.com/shitlists) to incrementally improve the codebase. We have many tests accessing remote services. To stop introducing new offenses, while fixing old ones, an easy change was added. Look, how smart and simple that is!🤌😍

Curious to know, what people think about this small rails feature proposal 🤔 discuss.rubyonrails.org/t/new-feature-…

In the upcoming rails, it will now be much easier to safely introduce counter caches to largish tables🤌. No more database triggers and other hacks! github.com/rails/rails/pu… Thanks to always awesome Jean Boussier for reviewing and merging!

The next rails version will have a bit more helpful logs by printing how many queries were made during the action execution (github.com/rails/rails/pu…). This can help to easily identify if the fix for N+1 works, or if caching works, or if the # of queries has been reduced, etc. 🤌

Is there a sane reason to call .freeze on constants in ruby❓🤷‍♂️ It makes my eyes bleeding, and I see it is used everywhere all the times. It just makes no sense in some cases; in other cases, it protects from imaginary problems (e.g. from updates), making the code worse.

Following the support of hash syntax for `.where`, `.select` and `.order`, the next Rails version will also support hash syntax for `.pluck` / `.pick`⚡️ -github.com/rails/rails/pu…

People who use rails sharding and have at least a few tens of shards, do you see any problems with rails handling connection pools for them? Or some other nonobvious problems with sharding in rails? Please share your experience 🙏

I encourage people to test rubocop with --profile option on their projects. You may find some edge cases why it is slow in your app. Just identified a case where the gem was not able to finish processing one of our files. Quick profile and here we go ⚡️ - github.com/DmitryTsepelev…

Latest ruby memory profiler allows for trivial profiling of Rails boot memory thanks to Dima Fatko 🇺🇦 gem install memory_profiler ruby-memory-profiler run -- bin/rails r 'Topic.first'

The best end of life for each extension library is to be merged into the core, imo. The newest sidekiq 7.3 merged 'sidekiq-iteration' gem, which makes it easy to deal with long-running jobs that iterate over large collections of items. Please, give a try. github.com/sidekiq/sideki…

I am currently profiling a slow rake task and I know that the reason is *lots* of queries. Is there an *existing* tool that will show # of queries, top code lines producing the most queries etc. I am eager to write such a tool and interested if other people will find it useful🤔

Presenting a new gem for tracing Active Record, I wish existed earlier 😆 github.com/fatkodima/acti… Many times I crafted code to get similar reports like in the gem - to profile slow tests, rake tasks, jobs, find the most popular queries etc. I hope you will find it useful too.

The next ruby's standard 'net/http' version, which also ends up being used internally by many other http clients and different API client gems, will allow to globally set default timeouts (and not only them) to use if these were not provided upstream 🎉 github.com/ruby/net-http/…

I hope Active Record will soon support batching using custom columns 🙏 github.com/rails/rails/pu…