Microservices backend

It provides two microservices accessible via two independent REST APIs.

• Admin operations: port 8000
• User operations: port 8001
• Independent arquitecture
• Independent deployment

Tech stack

• User-facing API
  • FastAPI
  • PostgreSQL
  • SQLAlchemy 1.4.7 Async
  • aio-pika for async communication with RabbitMQ
• Admin API
  • Django
  • MySQL
  • SQLAlchemy 1.3
  • pika
• RabbitMQ for message distribution
• Docker for instance isolation and separation of concerns

Setup

• Each service is initiated from a dedicated docker-compose file

Frontend

Based on TypeScript: https://github.com/rafapi/frontend-microservices

Notes

Run RabbitMQ base image and enable plugins on demand

# Pull and run the instance - note that we are mapping the management port (8080) so that the web interface is available right away.
$ docker run -d --rm --net rabbits -p 8080:15672 -p 5672:5672 --hostname rabbit-1 --name rabbit-1 rabbitmq:3.8

# Check the logs to verify everithing is running correctly
$ docker logs rabbit-1

# In case you need to enable the management_pluggin
# Open a console on the container
$ docker exec -it rabbit-1 bash
  
  # Check the status of all the pluggins
  $ rabbitmq-plugins list

  # Enable the management_pluggin
  $ rabbitmq-plugins enable rabbitmq_management

Django and Flask migrations

# Django (admiin site)
* Create the django application 
* Crea the db models module
$ python manage.py makemigrations
$ python manage.py migrate

# FastAPI/Flask (client site)
* Create a migrations module (see */users/manager.py*)
* Create the db models - make sure flask-sqlalchemy is installed
# Initialise and run migrations
$ python manager.py db_u init
$ python manager.py db_u migrate
$ python manager.py db_u upgrade