Distributed Cache

https://www.hellointerview.com/learn/system-design/problem-breakdowns/distributed-cache

A distributed cache is a system that stores data as key-value pairs in memory across multiple machines in a network. Unlike single-node caches that are limited by the resources of one machine, distributed caches scale horizontally across many nodes to handle massive workloads. The cache cluster works together to partition and replicate data, ensuring high availability and fault tolerance when individual nodes fail.