I am using couchdb and each user has their own database.
However, I have a web app that should be able to look up an _id in any database and return the document. With thousands of users, querying across thousands of couchdb instances would be impractical.
How can I replicate my data to a single master database so that I can query by _id?
What I ended up doing is replicating every userdb to a master db when the database was created, using the
_replicateAPI endpoint. The master db then contains a read-only copy of all the other databases.