Recipes# Recipes# Recipes

This section contains different recipes for different aspects of Cratis:

Topic	Description
Creating an event	How to create an event
Appending an event to the log	How to append an event to the event log
Reacting to events in the event log	How to observe and react to events that are appended to the event log
Reducers	How to create and maintain read models from events using reducers
Projections	How to create read models from events using projections
Constraints	How to define constraints to maintain data integrity
Custom Rules	How to create your own custom rules to be applied in your domain.
Configuration	How to configure Chronicle for different scenarios and environments
Docker Compose	How to use docker compose with Cratis.