Rails 7.2.beta1 has been released
The next release of rails comes with some neat benefits
Rails 7.2.beta1 dropped last night, around the same time as Ruby 3.3.2, so I took the time to upgrade both. Here are my top three features of the forthcoming Rails 7.2 release:
The Dockerfile now includes jemalloc by default
jemalloc is a general purpose malloc(3) implementation that emphasizes
fragmentation avoidance and scalable concurrency support.
Having this as a default in rails dockerfiles gives us confidence that it's the right way to go. It's no substitute for tracking down the actual source of memory leaks of course, but I saw a decent drop in my memory use after upgrading.
RAM use went from well over 550 MB, to around 350 MB. That's pretty cool. I know I can do more to get the number down, but this is a good start.
RAM use went from well over 550 MB, to around 350 MB. That's pretty cool. I know I can do more to get the number down, but this is a good start.
YJIT is enabled by default
Shopify's YJIT was merged to Ruby a while back, and is now enabled by default for anyone running Ruby 3.3+ on Rails 7.2. If it makes ruby apps faster, then I'll take it.
Brakeman and Rubocop in the Gemfile
group :development, :test do ... # Static analysis for security vulnerabilities [https://brakemanscanner.org/] gem "brakeman", require: false # Omakase Ruby styling [https://github.com/rails/rubocop-rails-omakase/] gem "rubocop-rails-omakase", require: false end
Great. Security analysis and code linting. No more arguing with myself over either of these things.
There are a ton of other exciting improvements with this update, and you can read the release notes here.
Amen.