practical_apps/

README

/go-practical-apps
│── main.go                   # Entry point of the project
│── go.mod                    # Module file for dependencies
│── go.sum                    # Checksum for dependencies
│── README.md                 # Project documentation
│
│── cli/                      # 🛠 CLI Tool
│   ├── cli_tool.go           # CLI implementation using flag package
│
│── api/                      # 🌐 REST API
│   ├── rest_api.go           # REST API implementation with net/http
│
│── scraper/                  # 🕸 Web Scraper
│   ├── web_scraper.go        # Scrapes web pages for links
│
│── caching/                  # 💾 Caching Mechanism
│   ├── cache.go              # In-memory cache with sync.RWMutex
│
│── worker/                   # ⚡ Worker Pool
│   ├── worker_pool.go        # Concurrency with Goroutines & Channels

🚀 Summary

Topic	Key Concept
CLI Tool	flag.String(), flag.Int(), flag.Parse()
REST API	http.HandleFunc(), http.ListenAndServe()
Web Scraper	golang.org/x/net/html, html.NewTokenizer()
Caching	map, sync.RWMutex
Worker Pool	goroutines, channels, sync.WaitGroup