🧱

Go Interface Design

Verified

by Community

Teaches Go interface design principles including keeping interfaces small, accepting interfaces and returning structs, the io.Reader/io.Writer patterns, and interface composition. Helps create flexible, testable Go code.

gointerfacesdesigncompositionabstraction

Go Interface Design

Design clean, composable interfaces that follow Go's philosophy of small, focused abstractions.

Usage

Describe your abstraction needs and get guidance on interface design following Go best practices.

Examples

  • "How should I design interfaces for dependency injection?"
  • "When should I define an interface vs use a concrete type?"
  • "Show me interface composition patterns in Go"

Guidelines

  • Keep interfaces small — prefer single-method interfaces
  • Accept interfaces, return structs
  • Define interfaces at the consumer, not the implementer
  • Show composition with embedded interfaces
  • Explain implicit interface satisfaction and its benefits