GoAkt Actor Example — Bank Account (Deposit & Withdraw)

This example demonstrates how to build a simple actor-based bank account using GoAkt v4.
It shows how to:

• Create an ActorSystem
• Spawn an actor (Account)
• Send messages using Ask
• Handle multiple message types (Deposit, Withdraw, Balance, InsufficientFunds)
• Log results using GoAkt’s built‑in logger