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In my work with Go, I have used various tools and libraries that help efficiently develop and maintain projects:

• Go standard library — for working with networks (net/http), file system, JSON, concurrency (goroutines, channels).
• Go Modules — for dependency management.
• Docker — for containerizing applications in Go.
• Prometheus and Grafana — for monitoring and metrics.
• gRPC — for implementing high-performance RPC services.
• Gin, Echo — popular web frameworks for creating REST APIs.
• Testify — for writing unit tests.
• Delve — debugger for Go.

Example of using Gin for a simple HTTP server:

package main

import (
    "github.com/gin-gonic/gin"
)

func main() {
    r := gin.Default()
    r.GET("/ping", func(c *gin.Context) {
        c.JSON(200, gin.H{"message": "pong"})
    })
    r.Run() // starts the server on :8080
}