redgeoff edited a comment on issue #831: Filter _changes by key to speed up replication URL: https://github.com/apache/couchdb/issues/831#issuecomment-405062691 Hehe... well, that may be a nice enhancement, but what I really think is: 1. #592 needs to be fixed so that indexed views can be used for filtered replication 2. I think some sort of new indexing construct is needed so that you can create an index based on key so that you can specify a key when using a view during filtered replication. I'm not entirely sure of the inner workings of CouchDB so I can't be much more specific here. Sorry. Currently the only way to avoid the latency with this slow filtered replication is to manually shard the database, e.g. in my example above, create a database per class type, but this can get very unmanageable when the scenario gets more complicated. (Creating a new database allows you to partition the data and makes the replication faster).
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