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Stories
How to implement enums in Go with iota and stringer
Marco Franssen
Build enum-like types in Go with iota, generate String methods with stringer, and marshal and unmarshal named values as JSON strings.
Build a Go web server with HTTP/2 and Let's Encrypt
Marco Franssen
Build a Go HTTP/2 web server with TLS, self-signed certificates for offline development, and Let's Encrypt certificates managed by the autocert package.
Manage Go tools via Go modules
Marco Franssen
Manage Go development tools with Go modules using a tools.go file, build constraints, and a Makefile to keep local and CI tool versions aligned.
Improve a Go web server with graceful shutdown, chi, and zap
Marco Franssen
Create reusable Go web server boilerplate with chi routing, structured zap request logs, and graceful shutdown that lets active requests finish.
Build a Go Elasticsearch client with Docker
Marco Franssen
Build a Go API with the Elasticsearch 7 client, run a local cluster with Docker Compose, and add index creation and search to a practical demo.
Docker for Go projects with multi-stage builds and Docker Compose
Marco Franssen
Build a small Go Docker image with a multi-stage build, run it with Docker Compose, and use Traefik 1.7 to route requests and scale your local web service.
Build a Go web server with graceful shutdown
Marco Franssen
Build a Go HTTP server that handles interrupt signals, gives active requests time to finish, and coordinates graceful shutdown with goroutines and channels.
Go interfaces and type assertions
Marco Franssen
Explore implicit interfaces and type assertions in Go, with practical examples of custom error types, cleaner tests and type switches.
Test and benchmark your code in Go
Marco Franssen
Learn Go test and benchmark conventions with a JSON example, then explore code coverage, Testify assertions and options for comparing performance.
Concurrency in Go with goroutines and channels
Marco Franssen
Explore Go concurrency with practical goroutine and channel examples, including buffered channels, GOMAXPROCS, and the difference between concurrency and parallelism.
Using defer in Go with panic, recover, and file cleanup
Marco Franssen
Explore Go's defer with practical examples of execution order, panic and recover, recursive calls, and closing a file after reading its contents.
Start your first Go project
Marco Franssen
Set up your first Go project on Windows, learn basic syntax, write and run tests, and cross-compile a simple application for Linux and Raspberry Pi.