docker · glours · Mar 17, 2022 · Mar 5, 2022 · Mar 5, 2022 · Mar 5, 2022
diff --git a/README.md b/README.md
@@ -30,11 +30,12 @@ a MySQL database.
 - [`NGINX / ASP.NET / MySQL`](https://github.com/docker/awesome-compose/tree/master/nginx-aspnet-mysql) - Sample Nginx reverse proxy with an C# backend using ASP.NET
 - [`NGINX / Flask / MongoDB`](https://github.com/docker/awesome-compose/tree/master/nginx-flask-mongo) - Sample Python/Flask
 application with Nginx proxy and a Mongo database.
-- [`NGINX / Flask / MySQL`](https://github.com/docker/awesome-compose/tree/master/nginx-flask-mysql) - Sample Python/Flask
-application with an Nginx proxy and a MySQL database.
+- [`NGINX / Flask / MySQL`](https://github.com/docker/awesome-compose/tree/master/nginx-flask-mysql) - Sample Python/Flask application with an Nginx proxy and a MySQL database.
+- [`NGINX / Node.js / Redis`](https://github.com/docker/awesome-compose/tree/master/nginx-nodejs-redis) - Sample Node.js application with Nginx proxy and a Redis database
 - [`NGINX / Go`](https://github.com/docker/awesome-compose/tree/master/nginx-golang) - Sample Nginx proxy with a Go backend.
 - [`NGINX / WSGI / Flask`](https://github.com/docker/awesome-compose/tree/master/nginx-wsgi-flask) - Sample Nginx reverse proxy with a Flask backend using WSGI.
 - [`PostgreSQL / pgAdmin`](https://github.com/docker/awesome-compose/tree/master/postgresql-pgadmin) - Sample setup for postgreSQL database with pgAdmin web interface
+- [`Python / Flask / Redis`](https://github.com/docker/awesome-compose/tree/master/flask-redis) - Sample Python/Flask and a Redis database
 - [`React / Spring / MySQL`](https://github.com/docker/awesome-compose/tree/master/react-java-mysql) - Sample React
 application with a Spring backend and a MySQL database.
 - [`React / Express / MySQL`](https://github.com/docker/awesome-compose/tree/master/react-express-mysql) - Sample React

diff --git a/flask-redis/Dockerfile b/flask-redis/Dockerfile
@@ -0,0 +1,5 @@
+FROM python:3.11.0a6-alpine3.15
+ADD . /code
+WORKDIR /code
+RUN pip install -r requirements.txt
+CMD python app.py
diff --git a/flask-redis/README.md b/flask-redis/README.md
@@ -0,0 +1,82 @@
+## Compose sample application
+
+### Python/Flask application using a Redis database
+
+Project structure:
+
+```
+.
+├── Dockerfile
+├── README.md
+├── app.py
+├── docker-compose.yml
+└── requirements.txt
+```
+
+[_docker-compose.yml_](docker-compose.yml)
+
+```
+services:
+   redis: 
+     image: redislabs/redismod
+     ports:
+       - '6379:6379' 
+   web:
+        build: .
+        ports:
+            - "5000:5000"
+        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             0.0.0.0:5000->5000/tcp
+```
+
+After the application starts, navigate to `http://localhost:5000` in your web browser or run:
+```
+$ curl localhost:5000
+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
+```
diff --git a/flask-redis/app.py b/flask-redis/app.py
@@ -0,0 +1,14 @@
+from flask import Flask
+from redis import Redis
+
+app = Flask(__name__)
+redis = Redis(host='redis', port=6379)
+
+@app.route('/')
+def hello():
+    redis.incr('hits')
+    counter = str(redis.get('hits'),'utf-8')
+    return "This webpage has been viewed "+counter+" time(s)"
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", debug=True)
diff --git a/flask-redis/docker-compose.yml b/flask-redis/docker-compose.yml
@@ -0,0 +1,13 @@
+services:
+   redis: 
+     image: redislabs/redismod
+     ports:
+       - '6379:6379' 
+   web:
+        build: .
+        ports:
+            - "5000:5000"
+        volumes:
+            - .:/code
+        depends_on:
+            - redis
diff --git a/flask-redis/requirements.txt b/flask-redis/requirements.txt
@@ -0,0 +1,2 @@
+flask
+redis
diff --git a/nginx-nodejs-redis/README.md b/nginx-nodejs-redis/README.md
@@ -0,0 +1,108 @@
+## Compose sample application
+
+## Node.js application with Nginx proxy and Redis database
+
+Project structure:
+```
+.
+├── README.md
+├── docker-compose.yml
+├── nginx
+│   ├── Dockerfile
+│   └── nginx.conf
+└── web
+    ├── Dockerfile
+    ├── package.json
+    └── server.js
+
+2 directories, 7 files
+
+
+```
+[_docker-compose.yml_](docker-compose.yml)
+```
+redis:
+    image: 'redislabs/redismod'
+    ports:
+      - '6379:6379'
+  web1:
+    restart: on-failure
+    build: ./web
+    hostname: web1
+    ports:
+      - '81:5000'
+  web2:
+    restart: on-failure
+    build: ./web
+    hostname: web2
+    ports:
+      - '82:5000'
+  nginx:
+    build: ./nginx
+    ports:
+    - '80:80'
+    depends_on:
+    - web1
+    - web2
+```
+The compose file defines an application with four services `redis`, `nginx`, `web1` and `web2`.
+When deploying the application, docker-compose maps port 80 of the nginx service container to port 80 of the host as specified in the file.
+
+
+> ℹ️ **_INFO_**  
+> Redis runs on port 6379 by default. Make sure port 6379 on the host is not being used by another container, otherwise the port should be changed.
+
+## Deploy with docker-compose
+
+```
+$ docker-compose up -d
+[+] Running 24/24
+ ⠿ redis Pulled                                                                                                                                                                                                                      ...
+   ⠿ 565225d89260 Pull complete                                                                                                                                                                                                      
+[+] Building 2.4s (22/25)
+ => [nginx-nodejs-redis_nginx internal] load build definition from Dockerfile                                                                                                                                                         ...
+[+] Running 5/5
+ ⠿ Network nginx-nodejs-redis_default    Created                                                                                                                                                                                      
+ ⠿ Container nginx-nodejs-redis-web2-1   Started                                                                                                                                                                                      
+ ⠿ Container nginx-nodejs-redis-redis-1  Started                                                                                                                                                                                      
+ ⠿ Container nginx-nodejs-redis-web1-1   Started                                                                                                                                                                                      
+ ⠿ Container nginx-nodejs-redis-nginx-1  Started
+```
+
+
+## Expected result
+
+Listing containers must show three containers running and the port mapping as below:
+
+
+```
+docker-compose ps
+```
+
+## Testing the app
+
+After the application starts, navigate to `http://localhost:80` in your web browser or run:
+
+```
+curl localhost:80
+curl localhost:80
+web1: Total number of visits is: 1
+```
+
+```
+curl localhost:80
+web1: Total number of visits is: 2
+```
+```
+$ curl localhost:80
+web2: Total number of visits is: 3
+```
+
+
+
+## Stop and remove the containers
+
+```
+$ docker-compose down
+```
+
diff --git a/nginx-nodejs-redis/docker-compose.yml b/nginx-nodejs-redis/docker-compose.yml
@@ -0,0 +1,27 @@
+
+services:
+  redis:
+    image: 'redislabs/redismod'
+    ports:
+      - '6379:6379'
+  web1:
+    restart: on-failure
+    build: ./web
+    hostname: web1
+    ports:
+      - '81:5000'
+  web2:
+    restart: on-failure
+    build: ./web
+    hostname: web2
+    ports:
+      - '82:5000'
+  nginx:
+    build: ./nginx
+    ports:
+    - '80:80'
+    depends_on:
+    - web1
+    - web2
+
+
diff --git a/nginx-nodejs-redis/nginx/Dockerfile b/nginx-nodejs-redis/nginx/Dockerfile
@@ -0,0 +1,3 @@
+FROM nginx:1.21.6
+RUN rm /etc/nginx/conf.d/default.conf
+COPY nginx.conf /etc/nginx/conf.d/default.conf
diff --git a/nginx-nodejs-redis/nginx/nginx.conf b/nginx-nodejs-redis/nginx/nginx.conf
@@ -0,0 +1,12 @@
+upstream loadbalancer {
+  server web1:5000;
+  server web2:5000;
+}
+
+server {
+  listen 80;
+  server_name localhost;
+  location / {
+    proxy_pass http://loadbalancer;
+  }
+}
diff --git a/nginx-nodejs-redis/web/.gitignore b/nginx-nodejs-redis/web/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/nginx-nodejs-redis/web/Dockerfile b/nginx-nodejs-redis/web/Dockerfile
@@ -0,0 +1,9 @@
+FROM node:14.17.3-alpine3.14
+
+WORKDIR /usr/src/app
+
+COPY ./package.json ./
+RUN npm install
+COPY ./server.js ./
+
+CMD ["npm","start"]