EloqDoc: MongoDB-compatible doc DB with object storage as first citizen

In plain words

EloqDoc is an open-source document database that uses object storage like S3 as its primary durability layer while maintaining MongoDB compatibility. It decouples compute and storage for independent scaling, reducing infrastructure costs through object storage and local NVMe caching instead of traditional block storage. Built on Data Substrate, EloqDoc addresses MongoDB's scaling and consistency limitations while remaining fully compatible with existing MongoDB clients and drivers, making it suitable for teams seeking a more cost-efficient and scalable document database.

written from the facts on this page · September 2026

From the sources

Fully elastic, MongoDB API compatible distributed JSON document database with compute-storage separation and robust ACID transactions. - eloqdata/eloqdoc

In the maker’s words, at launch

We're excited to share EloqDoc, a new open source document database built on top of Data Substrate. EloqDoc is designed around the principle of treating object storage (like S3) as a first-class citizen for durability and cost efficiency. If you love the flexibility of MongoDB's document model but are struggling with…

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