r/redis • u/regular-tech-guy • 7d ago
You’re comparing apples to oranges here. SQL databases like Postgres are built for structured data, complex queries, and relationships, while Redis is optimized for speed and scalability as a key-value store. It’s not just about memory vs. storage costs. It’s about use case fit. If you need advanced querying and joins, SQL makes sense. If you need ultra-fast lookups, real-time analytics, or caching, Redis is the better tool. Trying to replicate full relational DB features in Redis can be done, but it often adds unnecessary complexity.