Redis Enterprise Flash technology combines RAM and flash storage in Redis to store large data sets at a lower cost than traditional options. This approach allows for more efficient use of resources, reducing infrastructure costs while maintaining performance advantages. The architecture is based on identical nodes deployed within a data center or across availability zones, with a management path handling proxy and cluster manager, and a data access path composed of master and slave Redis shards. Each database has a quota of RAM that can be extended to local flash drives using Redis Enterprise Flash, allowing for more flexible storage options. The technology uses in-memory replication to maintain high availability and scalability, while also providing durability through disk-based or replication-based options. By leveraging smart data placement and efficient IO patterns, Redis Enterprise Flash reduces the need for disk writes and optimizes performance.