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架构权衡评估方法（ATAM）：如何评估一个系统的质量 ​

原文 PDF：[星标]架构权衡评估方法（ATAM）：如何评估一个系统的质量.pdf（已转文字 + 提取配图）

正文 ​

2022/6/12 21:44 ATAM

ATAM

IT JAVA 2021-11-07 11:56

8 #Java 54 #DDD 2 ​

JAVA

JAVA

java_front

1

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1.1

1.1.1

QPS

TPS

/

= QPS x RT

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1.1.2

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1.2

1.2.1

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X9

595

1.2.2

(1)

86:307:0030

7:157:45

1

3010

3010

300100

30001000

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3000

1000

(2)

3000

3000

10

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1.3

1.3.1

1.3.2

if-else

ABCA99

B88C7

7

public class OrderServiceImpl implements OrderService {

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              @Resource


              private OrderMapper orderMapper;




              @Override




              public void createOrder(OrderBO orderBO) {




              if (null == orderBO) {



                   throw new RuntimeException("    ");




              }




              if (OrderTypeEnum.isNotValid(orderBO.getType())) {




                   throw new RuntimeException("    ");




              }




              // A




              if (OrderTypeEnum.A_TYPE.getCode().equals(orderBO.getType())) {




                  orderBO.setPrice(orderBO.getPrice() * 0.9);




                  if (orderBO.getWeight() > 9) {




                           throw new RuntimeException("         ");




                     }




                     orderBO.setRefundSupport(Boolean.FALSE);




              }




              // B




              else if (OrderTypeEnum.B_TYPE.getCode().equals(orderBO.getType())) {




                  orderBO.setPrice(orderBO.getPrice() * 0.8);




                  if (orderBO.getWeight() > 8) {




                           throw new RuntimeException("         ");




                     }




                     orderBO.setRefundSupport(Boolean.TRUE);




              }




              // C




              else if (OrderTypeEnum.C_TYPE.getCode().equals(orderBO.getType())) {




                  orderBO.setPrice(orderBO.getPrice() * 0.7);




                  if (orderBO.getWeight() > 7) {




                           throw new RuntimeException("         ");




                     }




                     orderBO.setRefundSupport(Boolean.TRUE);




              }




              // 




              OrderDO orderDO = new OrderDO();


              BeanUtils.copyProperties(orderBO, orderDO);


              orderMapper.insert(orderDO);




   }

}

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(1)

//

public interface DiscountStrategy {

             public void discount(OrderBO orderBO);

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        }

// A

@Component

public class TypeADiscountStrategy implements DiscountStrategy {

             @Override




             public void discount(OrderBO orderBO) {




             orderBO.setPrice(orderBO.getPrice() * 0.9);




   }

}

// B

@Component

public class TypeBDiscountStrategy implements DiscountStrategy {

             @Override




             public void discount(OrderBO orderBO) {




             orderBO.setPrice(orderBO.getPrice() * 0.8);




   }

}

// C

@Component

public class TypeCDiscountStrategy implements DiscountStrategy {

             @Override




             public void discount(OrderBO orderBO) {




             orderBO.setPrice(orderBO.getPrice() * 0.7);




   }

}

//

@Component

public class DiscountStrategyFactory implements InitializingBean {

   private Map<String, DiscountStrategy> strategyMap = new HashMap<>();




             @Resource


             private TypeADiscountStrategy typeADiscountStrategy;


             @Resource


             private TypeBDiscountStrategy typeBDiscountStrategy;


             @Resource


             private TypeCDiscountStrategy typeCDiscountStrategy;

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             public DiscountStrategy getStrategy(String type) {




                    return strategyMap.get(type);


             }



             @Override




             public void afterPropertiesSet() throws Exception {




             strategyMap.put(OrderTypeEnum.A_TYPE.getCode(), typeADiscountStrategy);


             strategyMap.put(OrderTypeEnum.B_TYPE.getCode(), typeBDiscountStrategy);


             strategyMap.put(OrderTypeEnum.C_TYPE.getCode(), typeCDiscountStrategy);




   }

}

//

@Component

public class DiscountStrategyExecutor {

   private DiscountStrategyFactory discountStrategyFactory;




             public void discount(OrderBO orderBO) {




             DiscountStrategy discountStrategy = discountStrategyFactory.getStrategy(orderBO.ge



             if (null == discountStrategy) {




              throw new RuntimeException("             ");




             }


             discountStrategy.discount(orderBO);




   }

}

(2)

//

public interface CreateOrderService {

   public void createOrder(OrderBO orderBO);

}

//

public abstract class AbstractCreateOrderFlow {

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             @Resource


             private OrderMapper orderMapper;




             public void createOrder(OrderBO orderBO) {




                // 




             if (null == orderBO) {



                  throw new RuntimeException("  ");




             }




             if (OrderTypeEnum.isNotValid(orderBO.getType())) {




                  throw new RuntimeException("  ");




             }




             // 




             discount(orderBO);




             // 




             weighing(orderBO);




             // 




             supportRefund(orderBO);




             // 




                    OrderDO orderDO = new OrderDO();




                    BeanUtils.copyProperties(orderBO, orderDO);


                    orderMapper.insert(orderDO);


             }



             public abstract void discount(OrderBO orderBO);




             public abstract void weighing(OrderBO orderBO);




   public abstract void supportRefund(OrderBO orderBO);

}

//

@Service

public class CreateOrderFlow extends AbstractCreateOrderFlow {

             @Resource


             private DiscountStrategyExecutor discountStrategyExecutor;


             @Resource


             private ExpressStrategyExecutor expressStrategyExecutor;


             @Resource


             private RefundStrategyExecutor refundStrategyExecutor;




               @Override
                                             12/19

               public void discount(OrderBO orderBO) {




                      discountStrategyExecutor.discount(orderBO);

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               }

@Override

public void weighing(OrderBO orderBO) {

   expressStrategyExecutor.weighing(orderBO);

}

@Override

public void supportRefund(OrderBO orderBO) {

                  refundStrategyExecutor.supportRefund(orderBO);




   }

}

1.4

1.4.1

1.4.2

(1)

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(2)

X

1.5

2

2.1

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ATAMArchitecture Tradeoff Analysis Method

ATAM12345678

9

2.2 ATAM

DDD

ATAM

ATAM

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(1) 100

(2) 10

(3) 5

(4) 5

(5) SSLHTTPS

(6)

(7)

(8)

(9)

(10)

(1)(2)(3)(4)(5)

(6)(7)

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(8)

(9)(10)

3

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ATAM

ATAM

4

DDD

JAVA

JAVA

java_fro nt

#8

                                               DDD

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ArchGuard

| 5Kubernetes()

DeepNoMind

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配图 ​

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