We've built a simple web application that demonstrates how LaunchDarkly's SDK works. Below, you'll find the basic build procedure, but for more comprehensive instructions, you can visit your Quickstart page.

• Elixir
• npm
• LaunchDarkly account and server SDK key
• LaunchDarkly boolean feature flag called "alternate.page"

Clone this repo

git clone https://github.com/launchdarkly/hello-phoenix.git

Install dependencies

mix deps.get

Start your Phoenix server

LD_SDK_KEY="YOUR_SDK_KEY" mix phx.server

Now you can visit http://localhost:4000 from your browser.

To experience how different values of the alternate.page flag would affect different users, visit

• http://localhost:4000/hello-launchdarkly/Joe
• http://localhost:4000/hello-launchdarkly/Robert
• http://localhost:4000/hello-launchdarkly/Mike
• etc.

• Official website: https://launchdarkly.com
• Erlang SDK documentation: https://docs.launchdarkly.com/sdk/server-side/erlang

• Official website: https://www.phoenixframework.org/
• Guides: https://hexdocs.pm/phoenix/overview.html
• Docs: https://hexdocs.pm/phoenix
• Forum: https://elixirforum.com/c/phoenix-forum
• Source: https://github.com/phoenixframework/phoenix