83 lines
2.9 KiB
Markdown
83 lines
2.9 KiB
Markdown
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## Compose sample application
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### Python/Flask application using a Redis database
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Project structure:
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```
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.
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├── Dockerfile
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├── README.md
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├── app.py
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├── docker-compose.yml
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└── requirements.txt
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```
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[_docker-compose.yml_](docker-compose.yml)
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```
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services:
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redis:
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image: redislabs/redismod
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ports:
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- '6379:6379'
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web:
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build: .
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ports:
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- "5000:5000"
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volumes:
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- .:/code
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depends_on:
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- redis
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```
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## Deploy with docker-compose
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```
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$ docker-compose up -d
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[+] Running 24/24
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⠿ redis Pulled
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...
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⠿ 565225d89260 Pull complete
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[+] Building 12.7s (10/10) FINISHED
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=> [internal] load build definition from Dockerfile ...
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[+] Running 3/3
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⠿ Network flask-redis_default Created
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⠿ Container flask-redis-redis-1 Started
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⠿ Container flask-redis-web-1 Started
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```
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## Expected result
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Listing containers must show one container running and the port mapping as below:
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```
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$ docker-compose ps
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NAME COMMAND SERVICE STATUS PORTS
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flask-redis-redis-1 "redis-server --load…" redis running 0.0.0.0:6379->6379/tcp
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flask-redis-web-1 "/bin/sh -c 'python …" web running 0.0.0.0:5000->5000/tcp
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```
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After the application starts, navigate to `http://localhost:5000` in your web browser or run:
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```
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$ curl localhost:5000
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This webpage has been viewed 2 time(s)
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```
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## Monitoring Redis keys
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Connect to redis database by using ```redis-cli``` command and monitor the keys.
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```
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redis-cli -p 6379
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127.0.0.1:6379> monitor
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OK
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1646634062.732496 [0 172.21.0.3:33106] "INCRBY" "hits" "1"
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1646634062.735669 [0 172.21.0.3:33106] "GET" "hits"
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```
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Stop and remove the containers
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```
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$ docker-compose down
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```
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