Apply FCQRS: task guides

Choose the task you need. For a first working application, start with registration.

Choose the task

Task	Guide
Model commands, events, decisions, and folds	Define an aggregate
Reject a command based on an older aggregate version	Send at an expected version
Expose registration and queries over HTTP	Register over HTTP
Project events into query data	Add a projection
Wait before querying your own change	Read your writes
Wait until a projection has processed a journal snapshot	Catch up projections
Coordinate several aggregate owners	Write a saga
Test decisions, replay, and retries	Test your domain
Change stored event contracts safely	Evolve persisted events
Rebuild derived query data	Rebuild a read model
Run non-durable asynchronous work	Dispatch an async effect
Choose journal and snapshot storage	Configure the database
Add logs, traces, and failure signals	Observe your system
Build a C# host and domain	Use FCQRS from C#

Consistency and recovery explains how aggregate persistence, projection commits, saga progress, and external work fit together.