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## Compose sample application
### Python/Flask application using a Redis database
Project structure:
```
.
├── Dockerfile
├── README.md
├── app.py
├── compose.yaml
└── requirements.txt
```
[_compose.yaml_](compose.yaml)
```
services:
redis:
image: redislabs/redismod
ports:
- '6379:6379'
web:
build: .
ports:
- "8000:8000"
volumes:
- .:/code
depends_on:
- redis
```
## Deploy with docker compose
```
$ docker compose up -d
[+] Running 24/24
⠿ redis Pulled
...
⠿ 565225d89260 Pull complete
[+] Building 12.7s (10/10) FINISHED
=> [internal] load build definition from Dockerfile ...
[+] Running 3/3
⠿ Network flask-redis_default Created
⠿ Container flask-redis-redis-1 Started
⠿ Container flask-redis-web-1 Started
```
## Expected result
Listing containers must show one container running and the port mapping as below:
```
$ docker compose ps
NAME COMMAND SERVICE STATUS PORTS
flask-redis-redis-1 "redis-server --load…" redis running 0.0.0.0:6379->6379/tcp
flask-redis-web-1 "/bin/sh -c 'python …" web running 0.0.0.0:8000->8000/tcp
```
After the application starts, navigate to `http://localhost:8000` in your web browser or run:
```
$ curl localhost:8000
This webpage has been viewed 2 time(s)
```
## Monitoring Redis keys
Connect to redis database by using ```redis-cli``` command and monitor the keys.
```
redis-cli -p 6379
127.0.0.1:6379> monitor
OK
1646634062.732496 [0 172.21.0.3:33106] "INCRBY" "hits" "1"
1646634062.735669 [0 172.21.0.3:33106] "GET" "hits"
```
Stop and remove the containers
```
$ docker compose down
```
## Use with Docker Development Environments
You can use this sample with the Dev Environments feature of Docker Desktop.
![Screenshot of creating a Dev Environment in Docker Desktop](../dev-envs.png)
To develop directly on the services inside containers, use the HTTPS Git url of the sample:
```
https://github.com/docker/awesome-compose/tree/master/flask-redis
```