https://github.com/strixrox/nodejs-load-balancer
Application Layer Load Balancer made using NodeJS and `http` module
https://github.com/strixrox/nodejs-load-balancer
application-layer http javascript load-balancer node node-js
Last synced: about 2 months ago
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Application Layer Load Balancer made using NodeJS and `http` module
- Host: GitHub
- URL: https://github.com/strixrox/nodejs-load-balancer
- Owner: StrixROX
- Created: 2025-03-15T15:36:20.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2025-03-15T16:53:35.000Z (about 1 year ago)
- Last Synced: 2025-03-15T17:25:18.197Z (about 1 year ago)
- Topics: application-layer, http, javascript, load-balancer, node, node-js
- Language: JavaScript
- Homepage:
- Size: 73.2 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# NodeJS Load Balancer
A load balancer made using `NodeJS`, `TypeScript` and `http` module. The load balancer operates in the Application Layer according to OSI model.
## Getting Started
### Clone the Repository
You can clone this repository on your local machine using the following bash command.
```bash
git clone https://github.com/StrixROX/NodeJS-Load-Balancer.git
```
### Build the Project
Before running the project, you will have to build the project. For this you will first have to install the development dependencies using:
```bash
npm install
```
Now, build the project using:
```bash
npm run build
```
The build output will get saved in `/dist` folder.
### Start Initial Environment
`src/index.ts` file provides some starter code to initialise the environment for using the load balancer. You can run it using the `start` script in `package.json` as such:
```bash
npm start # servers run once
```
OR
```bash
npm run dev # servers restart each time you save any source files
```
On first run, your terminal output should look like this:
```
✔ [ OK ] Server created - localhost #1
✔ [ OK ] Server created - localhost #2
✔ [ OK ] Server created - localhost #3
✔ [ OK ] Load Balancer created - localhost #LoadBalancer
✔ [ OK ] Client Page Server created - localhost #ClientPageServer
🟢 [ localhost #1 ] Listening on port 3001...
🟢 [ localhost #2 ] Listening on port 3002...
🟢 [ localhost #3 ] Listening on port 3003...
🔷 [ localhost #LoadBalancer ] Listening on port 5000...
🟢 [ localhost #ClientPageServer ] Listening on port 8080...
```
There are 5 servers that get started by default - _3 backend servers, 1 load balancer server, 1 client page server_. Each server has an idea associated, indicated by a `#` prefix.
You can directly go to `http://localhost:8080` in your browser to open the client interface to start interacting with the app. _(Don't expect too much in terms of design :P)_
### Running Tests
```bash
npm test src/*
```
## Next Steps
- Create a web-socket based interface to monitor network health
- Add health-check functionality
- Increase network throughput
- Create a variant which operates in the Transport Layer (OSI Layer 4)
- Try using HTTP/2 via `http2` module
- Implement an SSL layer using `https` module.