Suggestions for Rails Patterns

Cheers,

Next week I'm going to present Rails Patterns at the Scotland on Rails conference. The idea is to talk about common pitfalls and problems that I've encountered in many of the Rails projects I've been involved with and describe a solution or best practice.

I've already assembled several scenarios like async media processing, handling massive user data or deployment setups. I'm also curious what kind of problems you have encountered in your Rails past so that I can include them.

So if you have any suggestion to a common mistake that you see (like throwing plugins at random problems just because it seems easier) or a useful pattern that you use (like following "vendor everything" or how you handle background jobs), please send them too me. You can post them here

http://tinyurl.com/2mxcjo

as comments in the blog, email me or use twitter ( http://twitter/jweiss ).

Thanks,
Jonathan