11 parts · 16 chapters

Go, with Gin

Go is a small language designed at Google for large teams and network services: fast compilation, a single static binary, goroutines and channels built in, and deliberately few features. Measured on this machine, a goroutine starts in 743 ns with about 2 KB of stack.

Eleven parts, the same outline as every language course: basics; the type system; memory and the runtime; concurrency; idioms; tooling and testing; Gin end to end; net/http and Gin internals; performance and profiling; what Go is paired with in production; and the ledger API capstone.

Start reading · Part 0 Present as slides
basics · the type system · memory and the runtime · concurrency · idioms · tooling and testing · Gin end to end · net/http and Gin internals · performance · in production · capstonebeginner → expert · engineers adding Go for services, CLIs and infrastructure
the languagePackages, types, structs, interfaces, errors, generics.
the runtimeGoroutines, the G-M-P scheduler, the GC, escape analysis.
concurrencyChannels, select, context, errgroup, sync.
GinRouting, middleware, binding, validation, and what is underneath.
performancepprof, benchmarks, allocations, GOGC and GOMEMLIMIT.
productionOne binary in a small container, gRPC, Envoy, Prometheus, NATS or Kafka.
00

Basics

Modules, packages and a first program · Slices, maps, structs and zero values
2 ch · ~12 min01

The Type System

Interfaces, methods and embedding · Errors as values
2 ch · ~12 min02

Memory and the Runtime

Goroutines and the scheduler · Escape analysis and the GC
2 ch · ~12 min03

Concurrency

Channels, select and context · The race detector and goroutine leaks
2 ch · ~12 min04

Idioms

Writing Go like Go
1 ch · ~8 min05

Tooling and Testing

Built-in tools
1 ch · ~8 min06

Gin End to End

A Gin service · Data access: pgx and sqlc
2 ch · ~12 min07

net/http and Gin Internals

Under the framework
1 ch · ~8 min08

Performance and Profiling

Profiles and allocations
1 ch · ~8 min09

In Production: What Go Is Paired With

The stack around a Go service
1 ch · ~8 min10

Capstone: The Ledger API in Go

The build
1 ch · ~8 min
Language courses share one shapeEvery language course (Python, Go, Rust, Rails, Java and the optional three) has the same eleven parts and the same capstone, so they can be compared. Concurrency (course 35) and the Production Stack (course 9) are the companions.