Mongo $in operator performance

by

It can be fairly efficient with small lists (hard to say what small is, but at least into the tens/hundreds) for $in. It does not work like app-engine since mongodb has actual btree indexes and isn’t a column store like bigtable.

With $in it will skip around in the index to find the matching documents, or walk through the whole collection if there isn’t an index to use.

More Related Contents:

  1. MongoDB: Combine data from multiple collections into one..how?
  2. MongoDB: Is it possible to make a case-insensitive query?
  3. MongoDB: count the number of items in an array
  4. How to remove a field completely from a MongoDB document?
  5. Multiple join conditions using the $lookup operator
  6. Aggregate $lookup Total size of documents in matching pipeline exceeds maximum document size
  7. Understanding MongoDB BSON Document size limit
  8. MongoDB – admin user not authorized
  9. How can I run MongoDB as a Windows service?
  10. Mongo complex sorting?
  11. MongoDB: update every document on one field
  12. How to sum every fields in a sub document of MongoDB?
  13. Where does mongodb stand in the CAP theorem?
  14. MongoDb shuts down with Code 100 [closed]
  15. Mongodb Query To select records having a given key
  16. MongoDB: how to parse date in 3.6 mongoDb version?
  17. MongoDB – is DBREF necessary?
  18. saving picture to mongodb
  19. MongoDB – Querying between a time range of hours
  20. Delete a key from a MongoDB document using Mongoose
  21. Simple HTTP/TCP health check for MongoDB
  22. Mongoose.js instance.save() callback not firing
  23. Save Subset of MongoDB Collection to Another Collection
  24. MongoDB Update Deep Array
  25. How to configure MongoDB Java driver MongoOptions for production use?
  26. MongoDB normalization, foreign key and joining
  27. MongoDB: Find Subdocument in Array Matching Parameters
  28. How to increment a field in mongodb?
  29. Toggle a boolean value with mongoDB
  30. How to remove duplicates based on a key in Mongodb?

Leave a Comment