Kosmos filesystem is a high performance distributed filesystem for web-scale applications such as, storing log data, Map/Reduce data etc. It builds upon ideas from Google's well known Google Filesystem project.

(tags: filesystem opensource c++ cluster distributed grid gfs)

Perhaps you’re considering using a dedicated key-value or document store instead of a traditional relational database.

(tags: database scalability distributed storage programming couchdb rdbms performance key-value)