A basic implementation of microservices with event based system to create saga architecture.
Currently, this has no UI and you can only test it with postman or any alternative.
Postgres is used for database.
First fork this repository
or clone directly with HTTPS
git clone https://github.com/Dovakiin0/microservices-saga-grpc-nodejs.git
or SSH
git clone git@github.com:Dovakiin0/microservices-saga-grpc-nodejs.git
Fill in the environment variable for your respective postgres details inside docker-compose.yml.
Currently for two services two postges database are used in port 5433, 5434
Go inside each service then run
npm install
for migration, cd to auth_service and todo_service then run
npx sequelize-cli db:migrate
Alternately (preferable),
docker exec -it <container_id_of_service> bash
npx sequelize-cli db:migrate
To start:
docker-compose up -d
To stop:
docker-compose down
Routes are as follows:
POST /auth/register - create User
POST /auth/login - login for generating JWT token
PUT /auth/update/:id - update username for a user
POST /v1/todo - create a Todo (Requires token)
GET /v1/todo - Get the list of TODO
PUT /v1/todo/:id - update a TODO
All services runs independently.
Client_service acts as a API gateway for communicating with two services.
RabbbitMq is used for event management. Only one event is published and subscribed throughout this app.
when you change your username, auth_service throws an event called USERNAME_CHANGE_EVENT and it is subscribed by the todo_service which then changes all the username in its respective TODOs.
Feel free to tweak the code according to your needs, and don't feel hesitated to open any issue or advice me any improvements. I'll be sure to respond to you actively.