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https://issues.apache.org/jira/browse/COUCHDB-1296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153455#comment-13153455
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Bob Dionne commented on COUCHDB-1296:
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I can see this is a useful feature. I would think /db_updates which would
include create/delete dbs as well as updates, .ie. all changes, would be quite
a hefty feed depending on use cases.
The idea of a database database is also interesting, we do that in BigCouch,
storing a doc for each db created in a shard_db database. This is to support
the partition map. Anyway as Sam notes a database db gives you the
create/delete changes for free
> _changes style feed for database create/delete
> ----------------------------------------------
>
> Key: COUCHDB-1296
> URL: https://issues.apache.org/jira/browse/COUCHDB-1296
> Project: CouchDB
> Issue Type: New Feature
> Reporter: Sam Bisbee
>
> It would be great to have a _changes style feed for when databases get
> created and deleted. Currently if you want to watch the _changes feed or
> start replication jobs for certain types of databases (say they're name
> spaced) you have to get /_all_dbs and then poll it to check for changes,
> requiring a full array scan.
> This feed would allow me to hit /_all_dbs once and then get updates without
> hitting /_all_dbs every second and scanning a potentially large array.
> Cheers.
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