Apply FCQRS: task guides

This section is a working reference, not a second tutorial. Each guide assumes the numbered learning path has already introduced its model, solves one task, and states the failure boundary that matters. If a prerequisite is unfamiliar, return to the listed course stage rather than following several cross-links at once.

Choose the task

Task	Guide	Learn it first
Model commands, events, decisions, and folds	Define an aggregate	Chapter 1
Project events into query data	Add a projection	Chapter 2
Wait before querying your own change	Read your writes	Chapter 2
Coordinate several aggregate owners	Write a saga	Chapter 3
Test decisions, replay, and retries	Test your domain	Chapter 4
Change stored event contracts safely	Evolve persisted events	Chapter 4
Rebuild derived query data	Rebuild a read model	Chapter 4
Run non-durable asynchronous work	Dispatch an async effect	Chapter 3
Choose journal and snapshot storage	Configure the database	Chapter 5
Add logs, traces, and failure signals	Observe your system	Chapter 5
Build a C# host and domain	Use FCQRS from C#	Quickstart and chapter 1

If the task crosses several rows

Return to Consistency and recovery before combining the recipes. That page places aggregate persistence, saga progress, projection commits, and external work on one timeline, which makes the correct composition easier to see.