GoLang tutorials

If you are creating a Go application that will not have subpackages, you can develop the code anywhere on your filesystem. However, since this application (and most other apps you will develop) will use subpackages, your code must live in your GOPATH folder.

Topics

Basic

• hello world
• variables
• constants
• functions
• pointers
• struct
• null check
• methods
  • pointer receiver
  • value receiver
• init method
• packages
• multiple-return
• nested-import
• types
• type-defaults
• type-conversion
• float
• math
• if-else
• switch
• loops
• data structures
  • array
  • slice
  • map
  • range
  • list
• print
• parsing
  • number
  • xml (web-server_v4.go, xml-parsing_v1.go, xml-parsing_v2.go, xml-parsing_v3.go)
  • html (web-server_v3.go)
  • json
  • url
• web
  • server
  • client
• sleep
• shift
• defer
• panic
• file
  • reading
  • writing
• environment variable
  • get
  • set
• logs
  • normal
  • level + format
  • to file
• command line
  • arguments
  • flags
• lambda
• closures
• variadic functions
• interface
• error
• time
  • formatting
  • parsing
• epoch
• alias
• strings
  • formatting
  • functions
  • concatenation
• regular expressions
• sha1 hashes
• base64 encoding
• sorting
• sorting by functions
• recursion
• exit
• casting
• reflection
• iota

Advanced

• (unix) signals
• timer & ticker
• dynamic-type
• type-assertion
• enum
• goroutines
  • pooling
  • rate limiting
  • atomic counters
  • mutex
  • stateful
• channels
  • directions
  • buffering
  • synchronization
  • select
  • timeouts
  • non-blocking operations
  • closing
  • range over
• spawning processes
• exec'ing processes
• modules (try go help modules)
  • https://github.com/golang/go/wiki/Modules
  • https://blog.golang.org/using-go-modules
  • https://roberto.selbach.ca/intro-to-go-modules/

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Open topics

Advanced

• wait-groups
  • https://tutorialedge.net/golang/go-waitgroup-tutorial/
• context
  • https://blog.golang.org/context

Specific tecnologies

• db
  • mysql > see this repo
  • cassandra > see this repo
  • mongodb
  • redis
  • solr
• protocols
  • http/rest > see this repo and this repo
  • grpc > see this repo
  • websocket > see this repo
• docker
  • dockerfile > see this repo
• logging
  • library
    • go-logging > see this folder
    • logger
    • logrus
    • klog
    • on-file
• kubernetes
  • prometheus metrics
  • jaeger tracing
• communication
  • protobuf > see this repo
  • kafka > see this repo
    • shopify sarama > see this repo
    • segmentio kafka-go
• testing
  • principles
  • moking
  • tools

Tools

• Govendor
• Go kit
  • https://dev.to/napolux/how-to-write-a-microservice-in-go-with-go-kit-a66
  • https://medium.com/@shijuvar/go-microservices-with-go-kit-introduction-43a757398183
• Go Echo
  • https://echo.labstack.com/
  • https://github.com/labstack/echo

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Links

Articles

Goroutines

• https://medium.com/@riteeksrivastava/a-complete-journey-with-goroutines-8472630c7f5c

Channels

• https://www.sohamkamani.com/blog/2017/08/24/golang-channels-explained/
• https://codeburst.io/diving-deep-into-the-golang-channels-549fd4ed21a8

Environment variables

• https://stackoverflow.com/questions/40326540/how-to-assign-default-value-if-env-var-is-empty
• https://codereview.stackexchange.com/questions/108563/reading-environment-variables-of-various-types

Tutorials

• https://gobyexample.com/
• https://pythonprogramming.net/go/introduction-go-language-programming-tutorial/ - IN PROGRESS [next: Goroutines - Concurrency in Goprogramming / https://pythonprogramming.net/go/goroutines-go-language-programming-tutorial/]
• https://tour.golang.org/ - IN PROGRESS [next: https://tour.golang.org/methods/2]
• https://icyapril.com/go/programming/2017/12/17/object-orientation-in-go.html
• https://www.golang-book.com/books/intro
• https://dlintw.github.io/gobyexample/public/index.html#by-sequence

Testing

• https://godoc.org/google.golang.org/grpc/examples/helloworld/mock_helloworld

Sync

• https://medium.com/better-programming/using-synchronization-primitives-in-go-mutex-waitgroup-once-2e50359cb0a7

Interface

• https://medium.com/better-programming/a-real-world-example-of-go-interfaces-98e89b2ddb67

Compisition

• https://golangbot.com/inheritance/

Reflection

• https://medium.com/better-programming/understand-reflect-in-go-24a68fcf1011

Govendor

• https://github.com/kardianos/govendor
• https://blog.gopheracademy.com/advent-2015/vendor-folder/
• https://github.com/kardianos/spider