🗳️ Voting App on Docker Swarm

This project deploys a microservices-based Voting Application on Docker Swarm.
It consists of multiple services working together to collect votes, process them, and display live results.

---

🚀 Services

• vote (Frontend – Flask)

  • Accessible at http://localhost:80
  • Lets users vote between two options.

• result (Frontend – Node.js)

  • Accessible at http://localhost:5001
  • Displays live voting results.

• worker (Backend – .NET Core)

  • Consumes votes from Redis and updates the Postgres database.

• redis (Queue)

  • Stores incoming votes temporarily.

• db (Postgres)

  • Persists final voting results.
  • Initialized with init.sql.

• visualizer (Optional)

  • Visualizes the Docker Swarm cluster.
  • Accessible at http://localhost:8180
  • Runs only on the Swarm manager node.

---

📂 Project Structure

.
├── docker-stack.yml   # Stack file for Docker Swarm
├── init.sql           # Initializes the database schema
└── README.md          # Project documentation

---

🛠️ Deployment

1. Initialize Docker Swarm:

   docker swarm init

2. Deploy the stack:

   docker stack deploy -c docker-stack.yml voting_stack

3. Verify running services:

   docker stack services voting_stack

---

🔗 Access the Application

• Voting app → http://localhost:80
• Results app → http://localhost:5001
• Visualizer (optional) → http://localhost:8180

---

🧹 Clean Up

To remove the stack:

docker stack rm voting_stack

---

📌 Notes

• Ensure ports 80 and 5001 are free before deployment.
• If the database schema changes, update init.sql and redeploy.
• Visualizer runs only on Swarm manager nodes.