I am trying to build a small elixir CHAT application, I am trying to have a limiting feature in the app.

In every single moment of time, the app should handle 5 or fewer operations for every individual user. If there is any new operation for the same user still has 5 operations in the pending state - new operation for this user should immediately return request over limit error until the number of requests for this user decreases to less than 5.

Till now what I have created is

• I have a DynamicSupervisor to handle each user - (Create User)
• GenServer to handle the operation like sending messages to another user.

I am stuck here in implementing this feature, and I don’t know whether I am following the proper structure for this.

• I am creating this is a Terminal app without using any storage. Every message and state for the user are maintained in another process using (Genserver)