How does the order of compound indexes matter in MongoDB performance-wise?

Question

In general, I have to create a compound index in the same order as the parameters are being queried. So I want to ask is this order matter performance-wise at all?

Answer 1

It actually depends on the usage. MongoDB has a lot of options on how you deal with indexes. You can describe compound indexes or single indexes; Mongo can intersect single indexes in other to execute your query. There are other concepts, like an index to cover your query, which has some limitations. So it really depends on each particular query you want to make and their expected document format.

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