Simple Microservice Example

A very simple microservice example with NodeJS, Python, Redis, and Mongo

Dependencies

API Gateway/FrontendApplication

• Node

Data Backends

• MongoDB
• Redis

QuoteService

• python3
• pip3
• flask
• pymongo
• redis

Hosting

• NGINX

Build the frontend

The application uses a frontend written with plain html with jQuery and to style with Bulma.

This is built with webpack. This default application is built assuming you are using the localhost.

To build this to fit your own IP Address please follow the steps before running the whole microservice.

• Install NodeJs on your system

• Go to FrontendApplication directory

• Run npm install or if you have yarn yarn to install packages

• Now you need to set the API Gateway for this frontend application. It can be any host you have.

  • Let's say you are hosting this application on http://example.com then your API_GATEWAY would be this one.
  • If you are hosting in some machine with IP 123.324.345.1 then your API_GATEWAY would be your IP.

• To pass this setting to webpack build you need to set an Environment Variable

  • Windows : set API_GATEWAY=http://YOUR_HOST
  • Linux/Max : API_GATEWAY=http://YOUR_HOST
  • Remember no / at the end of the URL to get your web app work
  • You will need to add a port if not using standard ports

• Now you can do npm run build or yarn build

• Check dist/ folder for newly created index.html and the main.js

Final Result

• check http://YOUR_HOST:80 to see web app