Distributed Messages

💌 Learning about distributed messaging in Elixir

Getting started

• git clone [email protected]:camirmas/distributed_messages.git
• cd distributed_messages

Terminal

• In one terminal window, iex --sname [your_name] -S mix. This will create a node whose name takes the form your_name@hostname, e.g. cam@cam-pc.
• In another terminal window, iex --sname [different_name] -S mix. This will create another node.
• DistributedMessages.connect("name@hostname"), specifying the node in the other terminal window.
• DistributedMessages.send_message("different_name", "hello friend"). You do not need to specify the entire node name, just whatever comes before the @.

Separate Machines

The main difference here is that you need to use your ip address when starting up the app. A quick ifconfig should do the trick.

• On one machine, iex --name [name@ip_address] -S mix.
• On another machine, iex --name [another_name@ip_address] -S mix.
• DistributedMessages.connect("name@ip_address"), specifying the node on the other machine.
• DistributedMessages.send_message("different_name", "hello friend"). You do not need to specify the entire node name, just whatever comes before the @.

Running the Tests

mix test will only run non-distributed tests. In order to run the full test suite, you'll need to start up an app with iex --sname test -S mix in one terminal window, and elixir --sname [name] -S mix test in another.