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31 patterns · runnable Go

The Go pattern reference
you can run, not just read.

Every page is backed by real package main source that compiles in CI. Step the architecture, read the files, then rebuild the pattern from memory.

Open Decorator walkthrough Browse the catalog
31
patterns published
100%
backed by real source
0
third-party deps
race
detector in CI
decorator/decorators.go ✓ go vet · race 
type AuditDecorator struct {
	Next    Notifier
	History []string
}

func (d *AuditDecorator) Send(recipient string, message string) {
	d.History = append(d.History, recipient+":"+message)
	d.Next.Send(recipient, message)
}

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01

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02

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Catalog

Four families, one vocabulary

All 31 patterns →

Creational

5 patterns

Patterns for object creation in Go, usually expressed through constructor functions, interfaces, and functional options.

abstract-factory builder factory-method

Structural

7 patterns

Patterns for composing types and boundaries in Go with interfaces, embedding, adapters, and focused packages.

adapter bridge composite

Behavioral

11 patterns

Patterns for organizing control flow, workflows, and collaboration with explicit errors, interfaces, and small units of behavior.

chain-of-responsibility command interpreter

Agentic

8 patterns

Patterns for building AI agent systems in Go: reasoning loops, tool dispatch, memory, retrieval, and multi-agent coordination.

agent-loop tool-use orchestrator-subagent