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Command Query Responsibility Segregation

Anjali Sharma answered on January 12, 2023 Popularity 8/10 Helpfulness 1/10

answer Command Query Responsibility Segregation

Command Query Responsibility Segregation

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At its heart is the notion that you can use a different model to update information than the model you use to read information. For some situations, this separation can be valuable, but beware that for most systems CQRS adds risky complexity.

import org.axonframework.messaging.responsetypes.ResponseTypes;
import org.axonframework.queryhandling.QueryGateway;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
public class EmployeeQueryController {
    @Autowired
    QueryGateway queryGateway;

    @GetMapping("/employees")
    public List<EmployeeResponse> getEmployees() {
        GetEmployeeQuery employeeQuery = new GetEmployeeQuery();
        return  queryGateway.query
                (employeeQuery,
                ResponseTypes.multipleInstancesOf(EmployeeResponse.class))
                .join();
    }
}

https://www.techgeeknext.com/microservice/design/cqrs-query-example

Popularity 8/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: command java responsibility

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Contributed on Jan 12 2023

Anjali Sharma

0 Answers Avg Quality 2/10

Command Query Responsibility Segregation

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