Shuge Unlimited

Jun 20, 2026 · Databases

From 64 to a Million Tenants: Choosing the Right Milvus Multi‑Tenant Layer and Avoiding the 65,536 Ceiling

The article dissects Milvus's four‑layer multi‑tenant architecture—Database, Collection, Partition, and Partition Key—detailing each layer's default tenant limits, isolation strength versus scalability trade‑offs, hidden constraints like the 65,536 capacity ceiling, the Partition Key isolation switch, and practical guidance for selecting the appropriate layer in SaaS and regulated scenarios.