Rails 7.1

Lightning talk I gave at the September 2023 Slovenia Ruby Meetup.

Quick highlights and notable changes that are coming in Rails 7.1 in a couple of weeks.

Transcript

1. Miha Rekar Rails 7.1
2. Dockerfile • MRSK
3. Dockerfile • MRSK Kamal • /.env* files are now ignored • gem dockerfile-rails (by Fly)
4. Async queries • async_count • async_sum • async_minimum • async_maximum • async_average • async_pluck • async_pick • async_ids • async_find_by_sql • async_count_by_sql • Check: config.active_record.async_query_executor
5. Common Table Expressions
6. ActiveRecord::Relation#explain • now accepts options • query.explain(“ANALYZE, COSTS, VERBOSE, BUFFERS, FORMAT JSON") • query.explain("ANALYZE", "COSTS", "VERBOSE", "BUFFERS", "FORMAT JSON”) • https://explain.dalibo.com/
7. #select Accepts a Hash
8. ActiveRecord::Base.normalizes
9. Composite keys • both at the database and at application level • derived from schema • mainly for many-to-many relationships • virtual primary key via query_constraints • composite foreign key on association
10. BYO Authentication • Devise is ! • User.authenticate_by( email: “miha@rug.si", password: “rails4ever” ) • lazaronixon/authentication-zero • passkeys (WebAuthn)
11. ActiveSupport::MessagePack • new serializer that integrates with the msgpack gem • can reduce payload size and improve performance compared to JSON and Marshal
12. ActiveJob.perform_all_later • single redis/pg call
13. Rails.env.local? • Goodbye if Rails.env.development? || Rails.env.test? • Hello if Rails.env.local?
14. config.sandbox_by_default • start rails console in sandbox mode by default • useful to set for production environments
15. Support Bun • all-in-one JS/TS runtime & toolkit designed for speed, complete with a bundler, test runner, and Node.js-compatible package manager. • I know nothing about this • other people are excited
16. ICYMI • Ruby 3.3's YJIT is amazing • New register allocator • More code now gets JIT compiled • For Shopify: • 13% faster than 3.2 YJIT • 15% faster than 3.3 without YJIT • For Basecamp: • +24% faster on the median, +12% on the average
17. Ready for production?
18. rails app:update just do it
19. Thanks!