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@@ -10,6 +10,17 @@ For more information on how to this works with other frontends/backends, head ov
 
 The application uses Spring boot (Web, Mybatis).
 
+* Use the idea of Domain Driven Design to separate the business term and infrastruture term.
+* Use MyBatis to implement the [Data Mapper](https://martinfowler.com/eaaCatalog/dataMapper.html) pattern for persistence.
+* Use [CQRS](https://martinfowler.com/bliki/CQRS.html) pattern to separate the read model and write model.
+
+And the code organize as this:
+
+1. `api` is the web layer to implement by Spring MVC
+2. `core` is the business model including entities and services
+3. `application` is the high level services for query with the data transfer objects
+4. `infrastructure`  contains all the implementation classes as the technique details
+
 # Security
 
 Integration with Spring Security and add other filter for jwt token process.