"Adding a new and unique document to Meteor's MongoDB collection

Currently, I have a simple Tags Collection in Meteor where I check for duplicate Tag documents before inserting:

var existingTag = Tags.findOne({name: "userInput"})

If the existingTag is undefined, then I proceed with the insertion. However, I am wondering if there is a more efficient way to achieve this using meteor mongodb syntax. Unfortunately, I couldn't find any relevant documentation on this.

Your insights would be greatly appreciated. Thank you.

Answer №1

One effective solution is to establish a Mongo index on the unique field. This will provide both uniqueness validation at the Mongo level and enhance performance for searches conducted on that particular field.

Presently, Meteor does not offer direct support for index creation. Therefore, you must manually access your database and add the index from there. The appropriate command for this process is as follows:

db.tags.ensureIndex({name: 1}, {unique: true})

For more information on creating an index, visit this link and for details on creating a unique index, refer to this resource.

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