It could be possible that Phoenix only officially supports SQL backends, specifically PostgreSQL (including RDS and Aurora Postgres), and does not support DynamoDB as a backend. Aurora Postgres with a global endpoint might work, since Phoenix can be configured to use any PostgreSQL-compatible database by setting the PHOENIX_SQL_DATABASE_URL environment variable, but there is no explicit documentation or guarantee for multi-region active-active deployments or DynamoDB support. The recommended and documented approach is to use PostgreSQL (including Aurora Postgres) for persistence, and there is no mention of DynamoDB support in the available data sources.
Would you like more detail on how to configure Phoenix with Aurora Postgres or on the limitations of multi-region deployments?
