2018年5月11日 · If you want to index on field email on users collection: db.users.createIndex({"email":1}, {background:true}) Before applying indexing in mongodb …

Option #1 - Rolling Index Build. Option #2 - Create the index on one node (per replica set), backup the database files, and then copy the database backup to all the other node(s). You …

2012年3月16日 · Mongodb has wildcard indexes that allow you to create an index for a field that contains varying keys. From the documentation: If the field is a nested document or array, the …

The mongodb documentation for multikeys gives an example of querying embedded object fields in an array ...

2016年11月2日 · Say, we want to add index to a zipcode field of mongodb collection people. In order not to affect any operations, we write the following line: db.people.createIndex( { …

2015年3月18日 · By default, building an index is a blocking operation which locks the database until completed. When you already have a lot of data in your collection, this can take a very …

2015年11月5日 · I want to enable text-search at a specific field in my Mongo DB. I want to implement this search in python (-> pymongo). When I follow the instructions given in the …

I have a Node.JS server with a Mondodb database. Multiple clients use this same database, and each client has his own collection. The collections are named by the id of the client. Since …

2021年10月6日 · I am trying to create an index in the database, but, CreateMany creates indexes on individual columns on the array of columns specified. But I require a compound index for a …

2014年7月20日 · If you create an index with one set of options and then issue createIndexes with the same index fields but different options, MongoDB will not change the options nor rebuild …