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A collection of CRDT benchmarks
So yes, a particularly large document is not the norm but it can happen.
couchapp bits of registry.npmjs.org
npm does or did run on it https://github.com/npm/npm-registry-couchapp if that's what you mean by in-the-wild
Appwrite - The Open Source Firebase alternative introduces iOS support . Appwrite is an open source backend server that helps you build native iOS applications much faster with realtime APIs for authentication, databases, files storage, cloud functions and much more!
A document data model on FoundationDB, implementing MongoDB® wire protocol
https://github.com/FoundationDB/fdb-document-layer .and you get the transaction Al integrity.
I stopped using MongoDB and switched to this.
A truly open-source MongoDB alternative
14 projects | news.ycombinator.com | 1 Nov 2021
FoundationDB Document Layer
1 project | news.ycombinator.com | 1 Nov 2021
FoundationDB: A Distributed, Unbundled, Transactional Key Value Store [pdf]
3 projects | news.ycombinator.com | 7 Jun 2021
UKV: Replacing MongoDB, Neo4J, and Elastic with a single open-source ACID transactional NoSQL database with Zero-Copy Semantics, replaceable backends, and a vast ecosystem of bindings for C, C++, Python, Java, GoLang
1 project | reddit.com/r/opensource | 1 Mar 2023
Beating OpenAI CLIP with 100x less data and compute
2 projects | news.ycombinator.com | 28 Feb 2023