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this post was submitted on 01 Jan 0001
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Thanks for checking.
We don't need full database replication. We are just replicating activities that other servers are subscribed to. So the Comments table, only some of the rows will be "replicated". Not sure if/how CouchBase handles this.
Buckets are like databases in traditional relational databases. Here's the doc on how to filter which documents get replicated.
https://docs.couchdb.org/en/stable/replication/intro.html#controlling-which-documents-to-replicate
Normally with XDCR you can specify which documents to replicate out of a bucket. It doesn't have to be the entire bucket. So if you had certain types (comments, upvotes, etc) then only those would sync when the target comes online.
I did check into Apache CouchDB, the open source upstream, and replication is there. We use Enterprise Couchbase at work and it's a dream but there are some tools that I use that only use Apache CouchDB (Inkdrop for example). It's worth looking into.