
ExtendDB is an open source, DynamoDB-compatible adapter with pluggable storage backends that enables developers to run DynamoDB workloads locally, on-premises, and in air-gapped environments using PostgreSQL as the reference backend.


<div><p>This article introduces ExtendDB, an open-source DynamoDB-compatible adapter with pluggable storage backends, released under Apache 2.0 License.</p><ul><li>Implements DynamoDB wire protocol; works with existing AWS SDKs and tools unchanged</li><li>PostgreSQL is the first backend; additional backends can be added via Rust trait</li><li>Supports local development, CI/CD, on-premises, and air-gapped environments</li><li>Compiles to single binary with mandatory TLS and SigV4 authentication</li><li>Supports core DynamoDB operations: tables, items, queries, transactions, streams, TTL, import/export</li><li>Managed via CLI or web console at https://127.0.0.1:8000/console/</li><li>Early v0.1 release for development and experimentation</li><li>Not a DynamoDB replacement; performance and scaling differ from managed service</li></ul><p>ExtendDB enables teams to use DynamoDB access patterns outside AWS without rewriting application code, addressing scenarios like edge computing and on-premises deployments.</p></div>


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