Rails-6
Eager loading Active Storage models to avoid N+1 issues
Removing N+1 queries when we access the Active Storage attachments associated with an ActiveRecord model.Ruby Hash#transform_keys now accepts a hash that maps existing keys to new keys
Ruby Hash#transform_keys now also accepts a hash that maps the existing hash keys to new keysRails adds config rake_eager_load
Rails has added the option to eager load all the registered name spaces in rake tasks.
Rails has added support for automatic database connection switching from primary to the replica
Rails has added support for automatic database connection switching from primary to the replicaRails 6.1 adds at option to perform_enqueued_jobs test helper
Rails 6.1 has added at option to perform_enqueued_jobs test helper to run only jobs which are scheduled at or before the passed in time
Rails introduces disallowed deprecations in ActiveSupport
Rails has added support to configure disallowed deprecations.
Rails has added a benchmark generator
Rails has added a benchmark generator for scripts to benchmark Rails application.Rails 6 adds rails db:system:change command
Rails 6 adds rails db:system:change command to allow switching database configurationRails 6 - ActiveSupport Deprecations in Unicode and Chars support in favour of String
Rails 6 has deprecated methods in Unicode and Chars support for ActiveSupport in favor of using ruby 2.3+ String methods directly.Rails 6.1 adds support for multiple storage services to Active Storage
Rails 6.1 adds support to configure storage services for individual attachment.