Adding Indexes to a Schema

You might want to assign indexes to specific fields that you frequently use to find documents. You can apply indexes to a schema object when defining the schema or by using the index(fields) command. For example, both of the following add an index to the name field, in ascending order:

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var schema = new Schema({
  name: {type: String, index: 1}
};
//or
var schema = new Schema({name: String)};
schema.index({name:1});

You can get a list of indexed fields on a schema object by using the indexes() method. For example:

schema.indexes()