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README.md

@@ -1,2 +1,28 @@
-# LoadBalancerDemo
- ![]("githubimg.png")
+# LoadBalancerDemo
+
+![Load Balancer Architecture](githubimg.png)
+
+## Overview
+This project demonstrates a simple load balancing setup using Nginx as a reverse proxy to distribute traffic across multiple Go service instances.
+
+## Architecture
+- **Nginx**: Acts as a load balancer, distributing incoming requests across three Go service instances
+- **Go Services**: Three identical service instances that handle HTTP requests
+- **Docker**: Everything is containerized using Docker and orchestrated with Docker Compose
+
+## Endpoints
+- `/`: Welcome page showing server ID
+- `/getResult`: Returns a message with the current server ID
+
+## Setup and Running
+1. Make sure you have Docker and Docker Compose installed
+2. Clone this repository
+3. Run the following command:
+   ```bash
+   docker-compose up --build -d
+   ```
+
+## Project Structure
+- `nginx/`: Contains Nginx configuration and Dockerfile
+- `golangService/`: Contains Go service code and Dockerfile
+- `docker-compose.yml`: Defines the multi-container application setup

golangService/main.go

@@ -7,13 +7,23 @@ import (
 	"os"
 )
 
-func Handler(w http.ResponseWriter, r *http.Request) {
+func getResultHandler(w http.ResponseWriter, r *http.Request) {
 	ServerID := os.Getenv("SERVERID")
 	io.WriteString(w, "msg from server"+ServerID)
 }
 
+func rootHandler(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/" {
+		http.NotFound(w, r)
+		return
+	}
+	ServerID := os.Getenv("SERVERID")
+	io.WriteString(w, "Welcome to server "+ServerID)
+}
+
 func main() {
-	http.HandleFunc("/getResult", Handler)
+	http.HandleFunc("/", rootHandler)
+	http.HandleFunc("/getResult", getResultHandler)
 
 	if err := http.ListenAndServe(":8080", nil); err != nil {
 		log.Fatal(err)