Redis-compatible cache for Next.js with TTL support, rate limiting, and session management via Vercel KV and Upstash.

• Supports core Redis operations: strings, hashes, sorted sets, lists, and pipelines for batch commands with automatic performance optimization
• Built-in TTL management prevents memory leaks; use setex() for temporary data and namespaced keys (user:123, ratelimit:ip:endpoint) to avoid collisions
• Common patterns include cache-aside retrieval, atomic rate limiting with sliding windows, and distributed locks for race condition prevention
• Known issues documented: environment variable setup in monorepos, JSON serialization constraints (no BigInt/circular refs), scanIterator() infinite loops in v2.0.0+, and Next.js caching quirks requiring unstable_noStore()
• Redis Streams not supported; use @upstash/redis directly for XREAD/XADD operations