What's New In Rails 4.2
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Rails 4.2 introduces Active Job for background processing with multiple queue adapters, including support for ActionMailer’s deliver_later method. It also enhances ActiveRecord caching for faster query performance and incorporates foreign key support in migrations for PostgreSQL and MySQL. Additional features include a web-based console for development and a new HTML sanitizer based on Loofah and Nokogiri.
What's New In Rails 4.2
- 1. What’s New In Rails 4.2 Creston Jamison Ruby Tree Software
- 2. Active Job / ActionMailer ● Adapter layer on top of queuing systems ● Supports: Delayed Job, Resque, Sidekiq, queue_classic, etc. ● ActionMailer now uses Active Job to support the deliver_later method (also deliver_now) ● GlobalID library allows unique identification of a model instance
- 3. Adequate Record ● Caching in ActiveRecord resulting in up to a 2X speed boost ● Applies to these types of queries: o Post.find(id) o Post.find_by_name(name) o Post.find_by(name: name)
- 4. Web Console Web based console right on an exception page in the development environment.
- 5. Foreign Keys ● DB Foreign Key support in migrations ● Only supported by the postgresql and mysql db adapters ● Less orphaned records!
- 6. respond_with / Class respond_to ● Moved out of rails and to the responders gem
- 7. HTML Sanitizer ● New and based upon Loofah and Nokogiri
- 8. ● Smoothest Rails migration yet ● Although, inserts are fairly slow . . . ● 5.5 msec response time to a 7.5 msec response time (time spent in Ruby according to New Relic) My Experiences