Upstash
Serverless Redis and Kafka with global replication and REST API access.
Best for serverless apps that need Redis caching or Kafka messaging without managing infrastructure.
Use Cases
Free Tier
10MB Redis, 10K commands/day; 10K messages/day Kafka
How to Maximize the Free Tier
Upstash's free tier (10MB Redis, 10K commands/day) works for caching and session storage, not primary data storage. Keep your keys small and set TTLs aggressively — expired keys don't count toward storage. The REST API is the killer feature: use it from edge functions where Redis protocol isn't available. For the Kafka free tier (10K messages/day), use it for lightweight event queues, not high-throughput streaming.
Getting Started
Sign up → create Redis database → copy REST URL and token → use `fetch()` or SDK to cache data globally → add Kafka cluster for message queues if needed. No server to manage.
Pros
- REST API: Access Redis via REST API — no Redis protocol dependency, works from edge functions and browsers
- Global replication: Read replicas in multiple regions for low-latency data access from anywhere in the world
- Pay-as-you-scale: Pricing scales with usage after the free tier — no upfront commitments or minimum spends
Cons
- Redis size: 10MB Redis is tiny — sufficient for session caching but inadequate for any real data storage
- Command quota: 10,000 commands/day on the free tier can be tight for active applications with frequent cache operations
- No persistence: No data persistence guarantees on the free tier — data loss possible during infrastructure events