How-to guides

Short, focused recipes for specific tasks. Each assumes you already understand the idea behind it — if you don't, the Concepts section explains the why, and the Tutorial builds a full app step by step.

• *Define an aggregate* — commands, events, state, and the two functions.
• *Add a projection* — fold events into a read model and track the offset.
• *Write a saga* — react to events and issue commands.
• *Configure the database* — pick a provider; HOCON is optional.
• *Test your domain* — unit-test decisions and folds without Akka.
• *Use FCQRS from C#* — the same model with C# 15 unions.