Go Workshop

Miki Tebeka 📬 [email protected], 𝕏 @tebeka, 👨 mikitebeka, ✒️blog

Shameless Plugs

• LinkedIn Learning Classes
• Books

Syllabus

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Session 1: RPC

Agenda

• Advanced JSON
  • Custom serialization
  • Missing vs empty values
  • Streaming JSON
• HTTP clients
  • Request body
  • Streaming
  • Authentication
• HTTP servers
  • Dependency injection
  • Writing middleware
  • Streaming responses
  • Routing

Code

• cars - HTTP Server

• value.go - Custom serialization

• vm.go - Missing vs Zero values

• logs.go - Streaming JSON

• closure.go - Closure capture bug (Go 1.22)

• client.go - Making HTTP calls

Links

• The complete guide to Go net/http timeouts
• Server Side Events in Go
• httptest - Test your HTTP handlers
• How SQLite is Tested
• Managing Go Installations
• Web Frameworks
  • chi
  • Gin
  • fasthttp
• How I write HTTP services in Go after 13 years
• Making & Using HTTP Middleware
• Dependency injection:
  • Uber fx
  • Google wire
• Year 2038 problem
• golang.org/x/analysis - Write a linter
• mapstructure
• Validation
  • cue
  • validator
• NYC Taxi Dataset
• Email Address Regexp
• JSON Lines
• HTTP Status Cats
• Unicode Folding
• Fixing For Loops in Go 1.22
• JSON - The Fine Print
• HTTP cats

Data & Other

• event.json
• Syllabus

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Session 2: Going Faster

Agenda

• Benchmarking & profiling
  • tokenizer
• Performance tips & tricks
• Optimizing memory

Code

• tokenizer - Optimizing algorithm & memory allocations
• slice.go - How slices work
• playground.go - Misc
• store - Cache & better serialization
• matrix.go - Getting friendly with the CPU cache

Links

• Trie
• K-D tree
• lru-cache
• The Architecture of Open Source Applications - Including a book on performance
• Plain Text - Fun talk about Unicode
• Regular Expression Matching Can Be Simple And Fast
• Locality of Behaviour
• Rules of Optimization Club
• Computer Latency at Human Scale
• So you wanna go fast
• High Performance Go
• Miki's Optimization Overview
• A Benchmarking Checklist
• A Guide to the Go Garbage Collector
• hey
• Garbage Collection In Go : Part I - Semantics
• benchstat

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Day 3: Advanced Concurrency

Agenda

• Channel semantics
• Goroutine pools
• The "sync" & "sync/atomic" packages
• Handling panics in goroutines

Code

• go_chan.go - Channel semantics, fan-out, goroutine pool

• rtb.go - Context & cancellation

• taxi.go - Convert serial code to concurrent

• fan_in.go - Fan-in pattern

• counter.go - race detector, sync.Mutex & atomic

• token.go - Refresh token, sync.RWMutex

• token_chan.go - Refresh token with channels

• pmap.go - Parallel map

• pool.go - Using buffered channel for pool

• payment.go - sync.Once

Links

• automaxprocs
• x/time/rate - Rate limiter
• The race detector
• errgroup
• Data Race Patterns in Go
• Go Concurrency Patterns: Pipelines and cancellation
• Go Concurrency Patterns: Context
• Curious Channels
• The Behavior of Channels
• Channel Semantics
• Why are there nil channels in Go?
• Amdahl's Law - Limits of concurrency
• Computer Latency at Human Scale
• Concurrency is not Parallelism by Rob Pike
• Scheduling in Go by Bill Kennedy
• conc: better structured concurrency for go
• xkcd Tar
• Profile-guided optimization
• Rubber Duck Debugging
• Feynman Algorithm
• conc
• Using Formal Reasoning to Build Concurrent Go Systems video
• TLA+
• golang.org/x/sync/semaphore
• goleak - Find goroutines leak
• htmx
• Ultimate Go Tour

Data & More

• rtb.go
• taxi.tar

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Session 4: OO Patterns

Agenda

• Pointer vs value semantics
• Embedding structs
• Interfaces in depth
• The empty interface and type assertions
• Iterators

Code

• inc.go - Value vs Pointer sematics

• game.py - Structs, methods & interfaces

• error.go - What's a nil interface

• sha1.go - Calculate sha1, compose io.Reader & io.Writer

• wc.go - Implement io.Writer for word count

• empty.go - The empty interface (any)

• logger.go - Keeping interface small

• client_test.go - Mocking HTTP transport

  • client.go

• stats.go - Generics

• iter.go - Iterators

Links

• sort examples - Read and try to understand
• When to use generics
• Generics tutorial
• Generic Interfaces
• Generics can make your Go code slower
• Methods, interfaces & embedded types in Go
• Methods & Interfaces in the Go tour
• wc docs
• stringer command
• List of file signatures
• The Art of Unix Programming
• Method Sets
• lru_cache
• From Nand to Tetris
• bubbletea UI for the terminal (TUI)
  • huh
  • crush

Session 5: Project Engineering

Agenda

• Creating go executables
  • Injecting version
  • Embedding assets
• Configuration & command line parsing
• Logging & metrics
• Writing secure Go code

Code

• gosay.go - Building executables

Links

• Using ldflags to Set Version Information for Go Applications

• GoReleaser

  • GitHub Action

• svu - Bump version

• Using Zig to Compile Cgo

• Command line & Options

  • flag
  • Cobra + Viper
  • Ardan Labs conf

• Security

  • mkcert
  • x/crypto/autocert
  • Using Let's Encrypt in Go
  • Customizing Binaries with Build Tags

• tar joke

• Reversim Summit - October 27,28

• Writing Deployable Code

• The Twelve Factor App

• TOML format

• Knight Capital Group - Cost of configuration error

• The Art of Unix Programming PDF

• Generating Code - go:generate

• embed package

• Debug a Go Application Running on Kubernetes

• Core Dump Debugging

• Leek & Seek - A lot of diagnostic advices and tools

• Go: Monitor your goroutine

• Diagnostics in the Go docs

• go-cleanhttp

• Validation

  • cuelang
  • validator

• The new go-yaml

• Crafting Interpreters book

• net package name resolution

• Real Programmers

• Semantic Versioning

• sqlc - Compile SQL to Go

• starship - The prompt Miki use

• Ballmer Peak

• Structured Logging with slog

• OWASP Top 10

Data & Other

• gopher.txt
• Secure Code Slides
• journal.tar.gz