A.consumer使用offset来记录读取位置
B.Kafka的一个Topic可以理解为一个队列,即一个消息
C.生产者产生的消息逐条放到Topic尾部
D.消费者从右至左读取消息
(1)假定其中一种产品实施配给。解释为什么消费者的境况可能变差。
(2)假定其中种产品被固定在当前市场价格以下的水平,因此消费者不能想买多少就买多少。你觉得消费者的境况是变好了还是变差了?
Draw a budget line and then draw an indifference curve to illustrate the satisfaction - maximizing choice associated with two products. Use your graph to answer the following questions.
a Suppose that one of the products is rationed. Explain why the consumer is likely lo be worse off.'
b. Suppose that the price of one of the products is fixed at a level below the current price. As a result, the consumer is not able to purchase as much as she would like. Can you tell if the consumer is better off or worse off?
A.引入Partition机制,保证了Kafka的高吞吐能力
B.每个Partition都是有序且不可变的消息队列
C.Partition数量绝对了每个consumer group中并发消费者的最大数量
D.每个Partition在存储层面对应一个log文件
A.我们最优先要做的是通过尽早的、持续的交付有价值的软件来使客户满意
B.即使到了开发的后期,也欢迎改变需求。敏捷过程利用变化来为客户创造竞争优势
C.经常性地交付可以工作的软件,交付的间隔可以从几个星期到几个月,交付的时间间隔越短越好
D.严密的合同减少风险,如果变更需求要走CR流程
A.Consumer、cost
B.Convenience、communication
C.Capability、cost
D.Capability、consumer