Cloudflare Upgrades D1 Database With Global Read Replication
Cloudflare, May 3,2025
During the recent Developer Week 2025, Cloudflare announced the beta of global read replication for its serverless SQL database D1, providing a globally distributed option without sacrificing consistency.
With automatically provisioned replicas in every region, applications can now serve read queries faster while maintaining strong sequential consistency across requests.
When replication for a D1 database is enabled, the D1 service maintains read replicas in multiple regions and routes requests to an appropriate copy of the database according to performance heuristics, the type of queries made in those requests, and query consistency needs. In the article "Sequential consistency without borders: how D1 implements global read replication," Justin Mazzola Paluska and Lambros Petrou explain how the feature was implemented: