I really don't know the answers to that, but I did do a bit of testing on my old Mac Mini (late 2009, 8GB ram). I wrote a script that created 1000 documents th

I really don't know the answers to that, but I did do a bit of testing on my old Mac Mini (late 2009, 8GB ram). I wrote a script that created 1000 documents that were pretty small just a few k at most. The app I wrote using pouchdb to use find and edit them started choking when Safari had about 5000 documents stored in it. If you install CouchDB on your local box, or a remote server, and configure PouchDB to use your CouchDB to store and access those docs you can probably have 10s of 1000s and I know you can scale that up to millions of documents with the right hardware. You can get industrial strength remote CouchDBs from IBM and CouchBase for a pretty reasonable fee too. And you can run PouchDB with Node,js on a server and store your docs on it. So there are a lot of ways to use it.