# A few Rails 3 questions

**URL:** <https://www.ruby-forum.com/t/a-few-rails-3-questions/195567>\
**Category:** Rails\
**Created:** [September 25, 2010, 11:23am UTC](https://www.ruby-forum.com/t/a-few-rails-3-questions/195567 "2010-09-25T11:23:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Trausti\_Thor\_J](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/5daacb/32.png) [@Trausti\_Thor\_J](https://www.ruby-forum.com/u/Trausti_Thor_J)\
**Post date:** [September 25, 2010, 11:23am UTC](https://www.ruby-forum.com/t/a-few-rails-3-questions/195567/1 "2010-09-25T11:23:25Z")

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I am about to start a new project with Ruby 3.

1. How is the speed ?
2. Is it possible to host ruby3 projects on the same server as is  
hosting ruby 2 projects ? (with passenger)
3. Any foreseeable problems I will run into ?

Trausti

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<div class="post-metadata">

**Author:** ![Trausti\_Thor\_J](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/5daacb/32.png) [@Trausti\_Thor\_J](https://www.ruby-forum.com/u/Trausti_Thor_J)\
**Post date:** [September 25, 2010, 8:09pm UTC](https://www.ruby-forum.com/t/a-few-rails-3-questions/195567/2 "2010-09-25T20:09:00Z")

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Trausti Thor J. wrote:

> I am about to start a new project with Ruby 3.

From what I can tell, just do it.

> 1. How is the speed ?

Seems the Rails team suggests it should be faster. Lots of posts about  
it being much better on 1.9.2 than 1.8.7. Easy topic to google I would  
think.

> 1. Is it possible to host ruby3 projects on the same server as is  
> hosting ruby 2 projects ? (with passenger)

Yes, have a look at RVM. [http://rvm.beginrescueend.com/](http://rvm.beginrescueend.com/)  
Again, easy topic to google.

> 1. Any foreseeable problems I will run into ?

There’s always problems, and they’re forseeable because you know they’re  
coming.

I converted a reasonably complex (but not large) Rails 2 app to Rails 3  
just this past couple of weeks, and it actually went pretty well. I  
studied the blogs ahead of time for a couple of days so I had a pretty  
good idea what I was info. Just running your old app an trying to find  
answers as things break would be way too frustrating.

Even if you’re starting from scratch, you’ll want to write Rails 2 code,  
so read these to get started on knowing what the differences are:

> **[Ruby on Rails 3.0 Release Notes — Ruby on Rails Guides](https://guides.rubyonrails.org/3_0_release_notes.html)**
>
> Ruby on Rails 3.0 Release NotesRails 3.0 is ponies and rainbows! It's going to cook you dinner and fold your laundry. You're going to wonder how life was ever possible before it arrived. It's the Best Version of Rails We've Ever Done!But seriously...

> **[The Road to Rails 3: make your Rails 2.3 project more Rails 3 oriented —...](https://simonecarletti.com/blog/2010/07/the-way-to-rails-3/)**
>
> The goal of this article is to feature a list of tips and changes you can already introduce in your Rails 2 application to anticipate the migration and make your code more compatible with Rails 3.

> **[Omg GIFs | GIFDB.com](https://gifdb.com/omg)**
>
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