Cloudflare D1 Scales to 5.5 Million Databases: Inside the Control Plane Architecture
Cloudflare Blog · rss · 2026-10-14
Cloudflare details how D1's control plane scales to 5.5 million databases (15x growth in live databases year over year) driven by AI-assisted development platforms adopting per-user databases. Key patterns: one SQLite Durable Object per database, edge-only hot path for queries, Workers KV for routing metadata, Hyperdrive for central Postgres pooling, sub-2-second database creation, plus engineering tenets on idempotency, eventual consistency, and load-test-driven optimization.
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