Genserver Callbacks: handle_cast
Explore how to use the handle_cast callback in Elixir's GenServer to handle asynchronous messages like sending emails. Understand the message and state pattern matching, return values, and updating process state while enabling concurrent long-running tasks. Gain practical skills to manage GenServer processes effectively.
We'll cover the following...
We'll cover the following...
The handle_cast callback function
Now, let’s implement sending emails using handle_cast/2. The arguments given to handle_cast/2 are just a term for the message and the state. We pattern match on the message {:send, email}:
def handle_cast({:send, email}, state) do
# to do...
end