Redis 8 (Vector Search)
Vector similarity search and full-text index, now built into core Redis
Verdict
Search and vector capabilities that used to require the separate "Redis Stack" bundle are now folded directly into core Redis (8.0+), alongside the return to a fully open-source license. Excellent for semantic cache + vector search in one service, sub-millisecond latency. Use when you need vectors AND a cache/pub-sub layer — avoids adding another system.
Other Vector Databases
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- pgvectorProduction
PostgreSQL extension for vector similarity search
- MilvusStable
Cloud-native distributed vector database for billion-scale