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Indexes

Indexes are per collection

  • B-tree indexes

  • _id is indexed (and unique)

  • Single Field

  • Compund-key indexes

  • Multi-key indexes (indexing each element of an array)

  • Geospatial Index

  • Text Indexes (beta)

If there is an array of values (eg. tags) then the specific document will be indexed by each one of the values in that array. "Fake full-text indexing."