docker-compose with Postgres and Redis
Run the full stack with one command.
docker-compose with Postgres and Redis is a free Django Academy lesson on CoddyKit. This is lesson 2 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Django Academy learning path, and your progress syncs across the web and the CoddyKit app. The Django Academy course includes 4 lessons in total.
One Command, Whole Stack
docker-compose defines many containers in one file, so Django, Postgres, and Redis start together with a single command. 🧩
The compose File
Everything lives in docker-compose.yml, where each container you need becomes an entry under the services key.
services:
web:
db:
redis:The web Service
Your web service builds from your Dockerfile and runs Django, the heart of the whole stack.
web:
build: .
command: gunicorn config.wsgi:application --bind 0.0.0.0:8000Add Postgres
The db service uses the official Postgres image, giving you a real database without installing anything locally.
db:
image: postgres:16Add Redis
The redis service runs the official Redis image, ready to act as a cache or a Celery message broker.
redis:
image: redis:7Connect by Service Name
Compose gives each service a DNS name, so Django reaches Postgres at the host db, not localhost.
DATABASE_URL=postgres://user:pass@db:5432/appWait with depends_on
Use depends_on so web starts after db and redis, keeping your startup order sane.
web:
depends_on:
- db
- redisPersist Data with Volumes
A named volume stores Postgres data outside the container, so your rows survive restarts and rebuilds.
db:
volumes:
- pgdata:/var/lib/postgresql/dataPass Configuration as Env
Feed secrets and settings through environment or an env_file, keeping config out of your image.
db:
environment:
POSTGRES_DB: app
POSTGRES_PASSWORD: passMap Ports to Your Host
The ports key forwards a container port to your machine, so you can open the app in a browser.
web:
ports:
- "8000:8000"Bring It All Up
Run docker compose up and the entire stack boots together; add -d to run it in the background.
docker compose up -dQuick Check
How does your web container reach the database in Compose?
Recap
You wired a full stack in docker-compose: web, db, and redis services, connected by name, with volumes for data and one command to launch. 🚀
Frequently Asked Questions
Is the “docker-compose with Postgres and Redis” lesson free?
Yes — the full text of “docker-compose with Postgres and Redis” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Django Academy course, upgrade to CoddyKit PRO. The Django Academy course includes 4 lessons in total.
What will I learn in “docker-compose with Postgres and Redis”?
Run the full stack with one command. You practise Django Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Django Academy?
No prior experience is required. Django Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 2 of 4.
How long does the “docker-compose with Postgres and Redis” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Django Academy lesson?
Yes. Every Django Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Writing a Django Dockerfile
- docker-compose with Postgres and Redis
- Entrypoints, Migrations, and collectstatic
- Production Image Best Practices