Cobra is a powerful library for creating modern CLI applications in Go. Used by kubectl, Hugo, GitHub CLI, and many other popular tools. Provides commands, subcommands, flags, and automatic help generation. Use Case Use Cobra when you need to: Build complex CLI tools with subcommands Provide consistent flag handling …

Standard Go project layout following community conventions. Organize your Go projects for maintainability, testability, and clarity. Use Case Use this structure when you need to: Start a new Go project Organize a growing codebase Follow Go community standards Prepare for open source release Standard Layout 1myproject/ …

Authentication and authorization middleware patterns for Go web applications. Includes JWT, OAuth2, Auth0, and CORS implementations. Use Case Protect API endpoints with authentication Implement role-based access control Integrate with OAuth providers (Auth0, Google, GitHub) Handle CORS for frontend applications JWT …

Go pprof commands and practices for analyzing CPU, memory, goroutine, and block profiles. Enable Profiling HTTP Server 1package main 2 3import ( 4 "log" 5 "net/http" 6 _ "net/http/pprof" // Import for side effects 7) 8 9func main() { 10 // Your application code here 11 12 // Start pprof server …