High availability with Multi-AZ and automatic failover.
Read replicas for horizontal read scaling.
Data durability through AOF (Append-Only File) persistence.
Backup and restore capabilities.
Rich data structures support (Strings, Hashes, Lists, Sets, Sorted Sets, etc.). Redis has purpose-built commands for working with real-time geospatial data at scale
Memcached
Multi-node deployment with data partitioning (sharding).
No replication and no built-in high availability.
Non-persistent (in-memory only).
No native backup/restore.
Multi-threaded architecture for better utilization of multi-core systems.