MogileFS

Today I [re]discovered MogileFS, from Six Apart, http://www.danga.com/mogilefs/. Upon closer inspection it seems to be a like a sort of Amazon S3 Lite. It does file replication and provides one level of indirection, just like S3. The only thing missing, for my needs are secure URLs, for controlling access to files, and preventing deep linking. Otherwise, it seems to have all the right stuff. Metadata and data access happen over different channels, so the performance should be reasonable. In fact, media files are accessed directly via HTTP, through lighttpd or Perlbal, so that should be quite fast.