Rails 4.2 released

I think ActiveJob is a great thing, a real step forward to have a Rails-endorsed API for this others can hook into on both sides. Awesome.<p>But am I the only one who gets a sort of pit in their stomach every time they hear about a new Rails version? So many things to upgrade, so many dependencies that might break, and then Rails 5 coming in less than 12 months when I get to do it again, I have to admit the Rails treadmill is exhausting me.

The Rails team make so many developers happy worldwide, it&#x27;s incredible. Thank you from the bottom of my heart for making my job suck less.<p>---<p>A quick questions regarding Foreign Key support, in the past I would use these concepts normally but does this mean that before Rails did not use Foreign Keys (in the strict rdbms sense)?<p>Does this mean that there are now easy performance gains if you&#x27;re using their new -real- foreign key support?

Rails 4.2 does NOT work with JRuby.<p>There are pending issues on activerecord-jdbc: <a href="https://github.com/jruby/activerecord-jdbc-adapter/issues/599" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;jruby&#x2F;activerecord-jdbc-adapter&#x2F;issues&#x2F;59...</a>

I found <a href="http://samsaffron.com/archive/2014/12/01/speeding-up-rails-4-2" rel="nofollow">http:&#x2F;&#x2F;samsaffron.com&#x2F;archive&#x2F;2014&#x2F;12&#x2F;01&#x2F;speeding-up-rails-4...</a> (from the post&#x27;s comments) interesting.<p>It looks like there were initially quite a few performance regressions in the new release. Adequate Record looks great for rails scaffolds, but (at this stage) doesn&#x27;t look like it will very useful for production apps that <i>probably</i> have more complex queries. For example, it stops working if your query has a `where`.<p>Big thanks to Sam et al for their work in speeding things up.

I have been using rails for many years now and I&#x27;m sad to say I&#x27;m leaving it behind in my current&#x2F;new project :( I will miss the familiar patterns and want to express my gratitude to the team that makes <i>everything</i> work so seamlessly.

Congrats, and thanks so much for your hard work rails team.

Has anyone had issues upgrading? Alot of our tests that check a value from a the session are failing; haven&#x27;t been able to figure out why so far.

Congratulations guys. I love working with a framework that is always getting better, looking forward to deploying ActiveJob. GlobalID is great!

I&#x27;m just waiting on Delayed Job at this point :)

Seasons greetings Rails team; thanks for the gifts.

Congrats!! I&#x27;d like to upgrade Rails 4.2 from 4.2.0.rc3, thanks!

Finally official foreign keys support \o&#x2F;

Rails4.2 the day after Postgres9.4. A great combination.<p>Postgres9.4 has JsonB, Json, Hstore and Array fields. Rails4.2 fixes the dirty-tracking for JsonB&#x2F;Json&#x2F;Hstore. Thank you developers!