recommended rails performance tuning

Shiva Kumaran wrote:

just tell me some recommended rails performance tuning if anyone knows

Courtenay of Caboo.se fame did an article on a somewhat overlapping topic which contains a few pointers on tuning also:

http://www.caboo.se/articles/2007/7/29/scale-rails-from-one-box-to-three-four-and-five

Instead of google, try searching del.icio.us as well. It has tons of
good stuff.

caching
query analysis
profiling
logfile analysis
website statistics
database indexes
javascript/CSS file compression
"rails go vroom"