Rails
Rails 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 timeRails adds ActiveRecord API for switching multiple database connections
Rails adds ActiveRecord API connects_to and connected_to for switching connections to support multiple databases.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 adds support for if_exists/if_not_exists on remove_column/add_column in migrations
Rails adds support for if_exists/if_not_exists on remove_column/add_column in migrations to silently ignore migrationsRails 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.