A simple way to have specific static files in memory at any time in elixir with infinite concurrency

images.ex

defmodule Images do

  def image_content(_, 0),
    do: unquote(File.read!("path/to/empty/image.png"))

  for lang <- ["en", "de", "fr"], amount <- 1..11 do
    binary = File.read!(__DIR__ <> "/images/#{lang}-#{amount}.png")
    def image_content(unquote(lang), unquote(amount)),
      do: unquote(binary)
  end

end