Vector DB Pitfalls: 8 Popular Databases Tested in Production
PrajwalTomar_ · x · 2026-09-01
The author tested 8 popular free-tier vector databases and found critical flaws when moving to production.
Key findings:
- One service deletes clusters after 14 days, active or not.
- Another lacks self-hosting options, making it unusable for air-gapped infra.
- Most have hidden caps that require payment to scale.
Core advice:
Choose based on where your agent runs first (Air-gapped, Edge, or On-prem). Deployment location is the primary disqualifier. Storage caps are just bills you haven't paid yet.
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