Rails development log not updating
Based on this, you might come to the conclusion that Rails has code that allows it to plug into each of these web servers.
If you are developing as part of a team, you want every member of the team to be using the same version of the dependencies.
Once you do this, you may find yourself not being able to reproduce problems that occur in production because your runs are picking up different versions of the gems your application depends on.
Or perhaps you see problems that don ’t exist in production.
Rails 4 introduces a number of user-facing changes, and the book has been updated to match all the latest changes and new best practices in Rails.
When I started learning Ruby on Rails, I read the first edition of this book.