ryanrborn
Tick-to-Trade in Elixir: A GenServer handle_info Pipeline
A long-running GenServer holds orders, positions, strategy state, and operational flags for a system trading real capital. The post walks the actual state struct, the three categories of data inside it, the persistence model (write to the database before the broker, push heavy work to Oban, never persist candles), and the design principles that fell out of running it in production — including why mid-roll restarts refuse to resume rather than guess.
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