A toy project to learn Phoenix.

https://historical-currency-conversion.herokuapp.com/

• Using session to keep track of data
• Caching currency API response with ETS
• Mocking with Mox
• styling with Tailwind
• deployed to Heroku

Next:

• handle invalid input errors
  • future date
  • text instead of numbers

• Key: currency from + currency to
• Value: date, rate

# Insert:
:ets.insert_new(:api_cache, {"USDEUR", "2012/10/22", 0.45})

# Retrieve:
:ets.match_object(:api_cache, {:"USDEUR", :"2012/10/22", :"$3"})

# Example return data:
[{"USDEUR", "2012/10/22", 0.45}]

• Install dependencies with mix deps.get
• Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server

Now visit localhost:4000