Right now my team is working with NodeBB for a content-oriented site. We have very few users in the system during development but we're creating a lot of topics via automated posting of content from the web.

With only 100K topics in the system (nearly all with a single post) we have around 2M records in the database. Distinct _key in the database is around 1/5 of the total records (400K).

Part of this appears to be from tags - where an average post will have 3-4 tags associated with it and it looks like there is a record created for each tag + each post.

Is there anything we can do to slow the hyper-growth in database documents? I'm concerned the number of records being created will grow exponentially further when we have more users in the system - with records for tracking per-user notifications, and read status of each topic/post, etc.

It would be great to get some advice on how to mitigate this issue, including:

• Which admin settings control record creation
• Which user/profile settings control record creation
• Which database records can be safely pruned after disabling specific features
• Etc.

Thanks!

PS: We're currently using 0.7.x with custom plugins/theme and MongoDB as the database layer.