LaECa

A Simple and Lightweight Load Balancer in Go

Description

laeca is a lightweight and efficient load balancer developed in Go, leveraging only Go's native standard library (stdlib). It is designed to be simple to configure and deploy, making it an excellent choice for lightweight applications.

Supported Features

Protocols

• Currently Supported:
  • http: Load balancing for HTTP traffic.
  • tcp: Load balancing for raw TCP connections.

Load Balancing Algorithms

• Currently Supported:

  • Round-Robin: Requests are distributed sequentially to all upstream servers.

• Future Enhancements:

  • Least Connections: Directs traffic to the server with the fewest active connections.
  • Weighted Round-Robin: Servers are assigned weights, and traffic distribution considers these weights.
  • IP Hashing: Routes requests based on the client's IP address to ensure session affinity.

Configuration and Installation

1. Configuration File: Create a .laeca.yaml file in the project directory with the desired settings. Below is an example configuration file:

   listen: 9999
   protocol: "http"
   algorithm: "round-robin"
   upstream:
       - url: "0.0.0.0"
         port: 9998
       - url: "0.0.0.0"
         port: 9997
       - url: "0.0.0.0"
         port: 9996
       - url: "0.0.0.0"
         port: 9995

   • listen: The port on which the load balancer will listen for incoming traffic.
   • protocol: Protocol used for balancing traffic. Supported values: http, tcp.
   • algorithm: The load balancing algorithm to use. Supported value: round-robin.
   • upstream: A list of backend servers to which requests will be forwarded, including their url and port.

2. Starting the Application: Once the configuration is ready, run the application with the following command:

   laeca start

   Ensure the laeca.yaml file is located in the same directory where the command is executed.

License

This project is licensed under a standard open-source license. Feel free to use, modify, and contribute to the project.