Today we released version 1.5.0 of our RightAws gem at http://rubyforge.org/projects/rightaws/ ! This release not only provides an interface to EC2, S3, and SQS but also to SDB! The SDB interface has all the nice features of the other interfaces, such as persistent HTTP connections and error retries. Please give it a spin and let us know if you find a problem!
This release also has full support for European (EU) buckets in Amazon S3 and it works properly with objects larger than 2GB (it supports the Expect: 100-continue stuff). Note that there is a slight incompatibility with attachment_fu: if you’re using attachment_fu and RightAws you need to load the latter last, otherwise you’ll get an error message and breakage.