I love the "Always add DB Indexes" slide. It's amazing how many projects I run across that completely lack proper indexing. Many lack any indexes at all. It'

I love the "Always add DB Indexes" slide. It's amazing how many projects I run across that completely lack proper indexing. Many lack any indexes at all. It's almost like db:migrate should warn you if you've run a migration that lacked any indexes. Rails makes it so easy to forget about the database (yes, I'm talking about you database constraints in the actual database), that users often forget that it can be a pretty important piece of their application (especially when it gets popular).