A simple distributed application running across multiple Docker containers.

This example was originally at https://github.com/dockersamples/example-voting-app

It has been modified to demonstrate Continuous Previews on Uffizzi.

We recommend using the reusable workflow from the Uffizzi preview-action.

The Linux stack uses Python, Node.js, .NET Core (or optionally Java), with Redis for messaging and Postgres for storage.

• A front-end web app in Python or ASP.NET Core which lets you vote between two options
• A Redis or NATS queue which collects new votes
• A .NET Core, Java or .NET Core 2.1 worker which consumes votes and stores them in…
• A Postgres or TiDB database backed by a Docker volume
• A Node.js or ASP.NET Core SignalR webapp which shows the results of the voting in real time

The voting application only accepts one vote per client. It does not register votes if a vote has already been submitted from a client.

This isn't an example of a properly architected perfectly designed distributed app... it's just a simple example of the various types of pieces and languages you might see (queues, persistent data, etc), and how to deal with them in Docker at a basic level.