Go (Golang) Middleware Best Practices for Production
Go middleware best practices for production: the order that stops panics logging as 200, ResponseWriter wrappers with Unwrap, request IDs, timeouts and auth.
Patrik Nilsson
Blog
Go programming tutorials, tips, and news from LevelUpGo
The Go struct Keyword: Fields, Tags, Embedding and Methods
How Go's struct keyword works: declaring fields, zero values and composite literals, exported fields and JSON, struct tags with omitempty and omitzero, value vs pointer receivers, embedding, comparison and copying, the empty struct and field order.
Patrik Nilsson
The Go interface Keyword: Implicit Interfaces and nil Traps
How Go's interface keyword works: implicit satisfaction, pointer receivers, small interfaces, any, type assertions, the nil error trap and constraints.
Patrik Nilsson
The Go func Keyword: Functions, Methods and Closures
How Go's func keyword works: function signatures, multiple return values and named results, variadic functions, value vs pointer receivers, function values, closures and loop variables, functional options, generic functions, main and init.
Patrik Nilsson
Stop Using Electron, Use Wails: Go Desktop Apps in 2026
Wails is the Electron alternative for Go desktop apps. An empty app is about 8 to 11 MB versus 295 to 384 MB. Where Wails wins, where Electron still does.
Patrik Nilsson
Why Go Is the Best Language for AI-Written Code
A small language, one code style, a strict compiler, stable APIs and a standard library that covers the backend. Why Go is the best language for AI-written code.
Patrik Nilsson
The Go var Keyword: Zero Values, := and Package-Level Variables
How Go's var keyword works: declaration forms, zero values, var vs :=, shadowing, package-level variables and init order, sentinel errors, and compile-time interface checks.
Patrik Nilsson
The Go type Keyword: Defined Types, Aliases and Methods
How Go's type keyword works: defined types vs aliases, underlying types and conversions, why methods don't carry over, function types like http.HandlerFunc, generic types and type switches.
Patrik Nilsson
The Go const Keyword: Untyped Constants, iota and Enums
How Go's const keyword works: grouped declarations, what can be a constant, typed vs untyped constants, iota, enums with String methods and stringer, and const vs var.
Patrik Nilsson
The Go import Keyword: Syntax, Aliases, Blank and Dot Imports
How Go's import keyword works: grouped imports, import paths, why unused imports fail the build, aliases, blank and dot imports, and fixing import cycles.
Patrik Nilsson