MongoDB Notes - fcrimins/fcrimins.github.io GitHub Wiki

In-Memory MongoDB (6/7/17)

• Embedded MongoDB when running integration tests - StackOverflow, 2 options:
  1. Embedded MongoDB
  2. fakemongo/Fongo (formerly a Foursquare project?)
• Integration Testing Done Right With Embedded MongoDB

Notes

• Terminology: a "collection of documents" is analogous to a "table of rows."
  • "The grades array contains embedded documents as its elements." So a "document" is also analogous to a hash or a dict, if you will.
• "If you attempt to add documents to a collection that does not exist, MongoDB will create the collection for you." [https://docs.mongodb.com/getting-started/shell/insert/]
• "All queries in MongoDB have the scope of a single collection."

MongoDB Installation

1. sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6
2. echo "deb [ arch=amd64 ] http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list

• I'm running Ubuntu version 15.10. The above command is for version 14.04. The equivalent command for 16.04 didn't work with step #4 below.

3. sudo apt-get update
4. sudo apt-get install -y mongodb-org

• This produced the following warning message, which the next step is meant to address: "invoke-rc.d: mongod.service doesn't exist but the upstart job does. Nothing to start or stop until a systemd or init job is present."

5. follow these instructions: https://w0rldart.com/installing-mongodb-on-ubuntu-15-04/