EP131: How Uber Served 40 Million Reads with Integrated Redis Cache?

Uber uses an integrated caching solution named CacheFront with Redis, Docstore, and MySQL for efficient data handling. The system fetches data from Redis for cache hits and uses MySQL for cache misses, leveraging a CDC service for invalidation. Multi-region cache warming with Redis streaming handles potential database overloads during region fail-overs, while strategic sharding ensures even load distribution across instances.