I have recently started playing with Amazon SimpleDB, part of the Amazon cloud computing offering, which is basically equivalent to Google Bigtable. Being a ruby enthusiast, I decided to use the right_aws gem from RightScale. The only problem, is that right_aws still does not support batch attribute insertion, which severely limit performances. Since I’m planning to use Amazon SDB for BayesFor, where we need performance, I implemented it. You can find the code in sdb_batchput.rb