Elixir Workshop Ideas

elixir_workshop_ideas.md

Brown Bag Beers Elixir Workshop

Goal: Get some hands on time playing with Elixir and OTP.

Things to try (pick one!)

0. Generating a new supervised app with mix.

Covers:

• mix
• dependencies
• apps and default supervisor.

1. Build a parallel map function using processes

MyEnum.pmap/2 should iterate over a list of items, apply the function to each item in it's own process, and return the results in a list.

Covers:

• Modules
• Basic Syntax
• Using processes
• Testing

2. Build an in memory cache (no expiry).

Cache.get/1 get an item from the cache or return nil Cache.store/2 store a value in the cache at a given key Cache.cache/2 macro to either retreive from cache or store and return value in block.

Covers:

• OTP Supervisors & GenServers
• Dict (HashDict)
• Macros
• More Testing

3. Build a simple API (leveraging Cache) using Plug directly

Add: GET /v1/cache/:key && POST /v1/cache/:key

Covers:

• Plug
• JSON serialization

4. Add Ecto backed models to the API.

Add an ecto model with API access.

Add CRUD for /v1/posts

Covers:

• Ecto (lots to cover here)

5. Build an API using Relax

6. Build an API using Pheonix