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Sebastiaan van Stijn 45788a5f1c
Optimize result image
This patch makes some optimizations in the result service's image;

- switch to `node:8.9-alpine`, which a smaller base image
- use `https://` for the registry
- use `COPY` instead of `ADD`, following best pracice
- cleanup npm cache, and combine steps to reduce image size

These changes bring down the image size from 248MB to 81.2MB

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2018-01-04 12:26:14 +01:00
.github Update ISSUE_TEMPLATE 2017-05-04 13:30:48 -07:00
result Optimize result image 2018-01-04 12:26:14 +01:00
vote Put gunicorn command in list 2016-06-18 10:56:26 -07:00
worker Merge pull request #89 from oherrala/redisconn 2017-11-29 11:39:59 -08:00
.gitignore Recreate worker as a .NET Core app 2016-06-11 14:26:04 -07:00
architecture.png Update architecture diagram 2016-06-19 12:14:38 -07:00
docker-compose-javaworker.yml updating compose files to v3 2017-01-23 17:44:16 -08:00
docker-compose-simple.yml removing --debug flag from nodemon 2017-11-29 10:43:31 -08:00
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README.md adding warning about switching to Linux containers 2017-11-29 10:47:53 -08:00

Example Voting App

Getting started

Download Docker. If you are on Mac or Windows, Docker Compose will be automatically installed. On Linux, make sure you have the latest version of Compose. If you're using Docker for Windows on Windows 10 pro or later, you must also switch to Linux containers.

Run in this directory:

docker-compose up

The app will be running at http://localhost:5000, and the results will be at http://localhost:5001.

Alternately, if you want to run it on a Docker Swarm, first make sure you have a swarm. If you don't, run:

docker swarm init

Once you have your swarm, in this directory run:

docker stack deploy --compose-file docker-stack.yml vote

Architecture

Architecture diagram

  • A Python webapp which lets you vote between two options
  • A Redis queue which collects new votes
  • A .NET worker which consumes votes and stores them in…
  • A Postgres database backed by a Docker volume
  • A Node.js webapp which shows the results of the voting in real time

Note

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