Multiclient Distributed real-time room based chat application. Supports unicast, multicast & broadcast.

The backend is distributed & horizontally scalable. Technology used in backend Socket.io, redis(cache & pub/sub to maintain consistency among different servers), haproxy (for loadbalancer), mongodb(for persistence).

Setup

Running backend

As the architecture itself depends some components for eg. redis, mongodb, haproxy, so for each of use I have provided a docker-compose.yml file in the backend. It will pull respective containers, build the local backend application and run them by openning respective ports.

# go to backend 
$ cd backend

# build the chatapp image
$ docker build -t chatapp .

$ docker-compose up # pass -d for detached mode

# to stop the services
$ docker-compose down

Running frontend application

The main app.js contains all the business logic for websocket establishment and respective api calls. First run the backend services and the proceed to frontend server.

# for dev server run
$ npm start
# else build the assets and serve it through gserve
$ npm run build && serve ./build

Architecture

Thanks,

Bisakh