Go

Go (often called Golang) is a compiled, statically typed language created at Google in 2009 to solve a specific pain: the slow build times and complexity of large C++ services. It compiles to a single, dependency-free binary, starts instantly, and was designed from day one with concurrency — handling many things at once — as a first-class feature rather than an afterthought.

Its defining trait is deliberate minimalism: a small language spec, one obvious way to format code (enforced by the gofmt tool), and a standard library that covers web servers, JSON, and cryptography without third-party packages.

Go earns its keep in backend services that need to handle a lot of concurrent load efficiently — APIs, network tools, and infrastructure software (Docker and Kubernetes are both written in Go). It compiles to a single binary, which makes deployment simple: no runtime to install on the server. The trade-off is a steeper learning curve than Python for beginners — explicit error handling and static typing mean more code for simple tasks — and a smaller pool of beginner tutorials. For a first backend language, or for traditional page-based websites, Python or PHP will get you there faster.

• Static typing — every variable's type is known at compile time, catching a whole class of bugs before the program ever runs.
• Goroutines — lightweight threads managed by the Go runtime; starting one costs almost nothing, so handling thousands of concurrent connections is routine.
• Channels — the built-in way goroutines communicate safely, avoiding much of the manual locking concurrency usually requires.
• Explicit error handling — functions return an error value directly instead of throwing exceptions, so errors are checked inline (if err != nil) everywhere they can occur.
• Single binary deploys — go build produces one executable with no external runtime dependency, which is why Go is popular for CLI tools and infrastructure.

package main

import (
	"fmt"
	"net/http"
)

func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintln(w, "Hello from Go!")
	})
	http.ListenAndServe(":3000", nil)
}

A working web server using only the standard library — no framework or package install required to get this far.

1. Install Go from go.dev and work through the "A Tour of Go" — an interactive tutorial covering the whole language in a couple of hours.
2. Run a file directly with go run main.go while learning; use go build once you want a binary.
3. Build the small HTTP server above, then add a second route and read a query parameter from the request.
4. Learn goroutines and channels by writing a program that fetches several URLs concurrently and collects the results.
5. Try a minimal web framework like Chi or Gin once you're comfortable with net/http, for routing sugar on top of the standard library.