Index Intersection and MongoDB 7

Working with Data
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1

Hi everybody!
I’m currently working on performant improvement for our app’s queries, and trying to ensure that indexes are being used effectively.
We have a bunch of single field and compound indexes for the collections.
Here in community I found some links to the documentation page that describes Index Intersection - Index Intersection. But suddenly, I found out that such a page doesn’t exist for MongoDB 7.0 (current version at the moment).

Does someody know, why this page has been removed from the docs? Does it mean that Index Intersection is not supported anymore, and we have to use Compound Index instead everywhere?

Thanks in advance! Hope this question is not too dumb to be asked here :slight_smile:

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4

Yeah wondering the same thing, why doesn’t this page exist for 7.0?

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Index intersection is still there and supported, but never used in practice because in real-world workloads it almost never gets chosen by the query planner. The recommendation is to use well‑designed compound indexes that match your query patterns, and this doc page has been removed to avoid giving the impression that it was a recommended performance approach.

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