Load Balancer

Very simples HTTP/TCP Load Balancer. Single thread, using OS selector. The code contains 4 classes that implement different strategies to select the next back-end server:

1. N to 1: all the requests are routed to a single server
2. Round Robin: the requests are routed to all servers in sequence
3. Least Connections: the request is routed to the server with fewer processed connections
4. Least Response Time: the request is routed to the server with less average execution time

Course

This project was developed under the Distributed Computing course of University of Aveiro.

Installation

• Clone the repository:

$ git clone https://github.com/leo-dsf/Load_Balancer

• Install requirements:

$ python3 -m venv venv
$ source venv/bin/activate
$ pip3 install -r requirements.txt

How To Run

• Run Bash Script:

$ source venv/bin/activate
$ ./setup.sh

• In another terminal:

$ curl -s http://localhost:8080/10

• Or use a browser to open:

http://localhost:8080/10

How to access the load balancer

Go to a browser and open this link. The number after the URL specifies the precision of the computation.

How to Stress Test

• Run Stress Test:

$ ./stress_test.sh

• Alternative:

$ httperf --server=localhost --port=8080 --uri=/100 --num-conns=100 --rate=5

Author

• Leonardo Flórido - leo-dsf

License

This project is licensed under the MIT License.