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MongoDB containers with Docker Compose

February 2, 2024

Docker Compose facilitates spinning up a container for the MongoDB database without installing MongoDB locally.

Prerequisites

  • Docker Compose installed

Configuration

The following configuration spins up the MongoDB container with the UI tool (Mongo Express).

The connection string for the MongoDB database is mongodb://localhost:27018.

Mongo Express is available at the http://localhost:8082 link. Use the below Basic auth credentials to log in to Mongo Express.

# docker-compose.yml
version: '3.8'
services:
mongo:
image: 'mongo:7.0.5'
ports:
- 27018:27017
volumes:
- my-data:/var/lib/mongodb/data
mongo-express:
image: 'mongo-express:1.0.2'
ports:
- 8082:8081
environment:
ME_CONFIG_BASICAUTH_USERNAME: username
ME_CONFIG_BASICAUTH_PASSWORD: password
volumes:
my-data:

Run the following command to spin up the containers.

docker-compose up

Boilerplate

Here is the link to the boilerplate I use for the development.

2021

Cursor-based iteration with Mongoose

November 17, 2021

Using cursor-based iteration can be useful when there is a need to iterate (in memory) over all of the documents from a collection and every document is a big object. Every document can be projected to return only specific fields.

const cursor = Model.find().select('/* several fields */').cursor();
for (let document = await cursor.next(); document != null; document = await cursor.next()) {
// ...
}

Boilerplate

Here is the link to the boilerplate I use for the development.