Redis on Flash (RoF) is a memory technology that takes advantage of high-speed storage in the form of Flash SSDs, resetting price/performance expectations. It extends Redis from RAM to Flash, using intelligent tiering to keep hot values in RAM and cold values in cost-effective flash-based SSDs. This approach reduces RAM consumption and achieves sub-millisecond latencies. RoF has been used by customers such as Whitepages, which reduced its infrastructure costs by hundreds of thousands of dollars per year. Redis is working closely with Intel to ensure its solutions run optimally with new 3D XPoint technology, which delivers a new tier between DRAM and SSD that can provide up to 6TB of capacity in a two-socket server at performance comparable to traditional DRAM memory. This technology allows users to think of memory as the main storage tier for their data and gain the ability to extend their "memory". RoF is not just limited to Redis, but other DBMS must be optimized to work with this new technology.