Sacbe: A building block approach for constructing efficient and flexible end-to-end cloud storage.

•A building block (BB) approach to build flexible end-to-end cloud storage solutions.•The BB encapsulates functional and non-functional components into containers.•Chaining policies interconnect BBs to build Dataflows transporting data from devices to the cloud.•In-memory processing and storage significantly improves service experience of end-users.•A prototype with a complete end-to-end cloud storage solution was built with Sacbe.