---
title: "ExtendDB"
description: "1 posts about ExtendDB, summarised, each linking to the original."
---

# ExtendDB
> 1 posts about ExtendDB, summarised, each linking to the original.

## Articles

### [How We Used AI to Bring MongoDB to DynamoDB](https://yomu.fyi/post/how-we-used-ai-to-bring-mongodb-to-dynamodb.md)
- Company: [MongoDB](https://yomu.fyi/company/mongodb.md)
- Published: Aug 24, 2026
- Type: Announcement

AWS released ExtendDB, an open source adapter that lets DynamoDB workloads use pluggable storage backends, enabling them to run outside AWS. MongoDB built a storage backend for ExtendDB, allowing DynamoDB workloads to run on MongoDB anywhere, including on-premises and air-gapped environments, without changing application code. The backend maps DynamoDB concepts like partition keys, secondary indexes, transactions, and streams to MongoDB primitives, with tradeoffs such as handling numeric precision differences in the Rust layer. The project began as a hackathon experiment where an engineer used Claude Code to prototype the backend, which quickly produced a working component, then required several weeks of partnering with AWS to merge. The post emphasizes that AI changed the economics of such experiments, enabling the idea to move from thought to implementation quickly, and the backend is now available as open source.