Various tutorials

Hello0

Basic elixir module

• Hello.hello/0

Knowledge

• module
• function
• Call function from elixir shell

Going further

• Add arguments to function
• Add arguments with default value
• Add arguments with keyword list

Hello1

Simple store API

• Hello.start/0
• Hello.put/3
• Hello.get/2

Knowledge

• Use basic data structure (Map)
• Understand functional programming: no side effect

Going further

• Lookup reduce with Map
• Change Map with Keyword
• Understand elixir protocols using Enum instead of Keyword or Map functions

Hello2

GenServer based store

• Hello.Store.put/2
• Hello.Store.get/1

Knowledge

• OTP application basics: Application, Supervisor, GenServer

Going further

• Write crashing code, observer supervisor behaviour

Hello3

Telnet API on port 2323

Knowledge

• Write a protocol, use pattern matching

Going further

• Implement new commands
• Close TCP connection when "BYE"
• Add CREATE command to launch new bucket (spawn GenServer)

HelloRest0

Basic API

Knowledge

• Minimalist API with ewebmachine

Going further

• Add JSON support (poison deps already included)
• Try PUT: observe 405

HelloRest1

Knowledge

• Implements PUT + DELETE

Going further

• PUT request without 'content-type': observe 415

HelloRest2

Knowledge

Plug API with bucket

Going further

• Return 404 if Store.get returns nil
• Add "/hello" returning all key/value pairs from Store