FoundationDB Document Layer

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" summary

Document Layer is a stateless microserver that implements a MongoDB-style document model on top of FoundationDB, exposing wire-compatible with MongoDB API endpoints while inheriting FoundationDB’s serializable transactions and strong consistency. Documents are sharded across multiple FDB keys so single fields can be updated without rewriting large blobs, secondary indexes are kept consistent with writes, and each request runs as a short FDB transaction (5s limit) with long operations split across retries. Open-source (Apache) and implemented in Flow/C++; change streams and aggregations are pending.

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" chapters (5)

1. 0:00Introduction
2. 0:33FoundationDB
3. 4:08Document Layer
4. 6:42Features
5. 14:57Storage Model

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