第416章 加一道菜(上)!
笔趣阁(biquge2345.com)更新快,无弹窗!
天。
1000笔并发交易在可编程引擎上同时执行,规则检查、占用锁、本地账本扣减、异步回调清算系统。
方远按下了回车键。
测试结果在屏幕上刷了出来。
1000笔并发交易,全部通过,零双花,零一致性错误。
平均延迟:12毫秒。
12毫秒。
会议室里安静了。
…………
安静了大概四秒之后,央行技术安全部的一个人开口了。
“12毫秒是用户感知延迟还是全链路延迟?“
“用户感知延迟,“老周说,“全链路包含异步回调和清算确认,总延迟大约85毫秒,但用户在支付完成的瞬间看到的是12毫秒的确认,清算在后台一步完成。“
“最终一致性的时间窗口是多长?“
“从用户支付到央行账本确认,平均73毫秒,最长不超过200毫秒。“
“如果在这73毫秒内央行系统宕机了呢?“
“占用锁不释放,“老周说,“这笔钱一直处于‘被占用‘状态,用户不能花,商户不能收,等央行系统恢复之后,回调重发,清算完成,占用锁释放,如果央行系统在设定的超时时间内没有恢复,占用锁自动释放,这笔交易回滚,用户的钱退回可用状态。“
“超时时间设多长?“
“可配置,当前设的是30秒。“
提问的人点了一下头,在笔记本上写了几行字。
另一个央行的技术人员接上了:“并发测试里的1000笔是在什么网络环境下跑的?“
“模拟的4G网络,延迟波动在20到80毫秒之间,丢包率2%。“方远回答的,他的声音比在杭州实验室里稳了一些。
“丢包率2%的情况下有多少笔交易触发了重传?“
“37笔,重传后全部成功,重传延迟平均增加15毫秒。“
央行那边安静了一下。
花白头发的那个人一直没有说话,也没有在本子上写东西。
他的视线在赵铭远和老周之间移了两次。
技术质疑环节告一段落。
副处长看了看时间,说了一句“还有几分钟,自由讨论“。
花白头发的人动了。
他往前坐了一点,双手交叉放在桌上,看着微光这边。
“林总,“他开口了,声音不大但很清楚,“赵总前两周向我递交了一份建议,关于核心架构承建资格的问题,他的建议是核心技术架构应当由持牌金融机构承建,我想听听你的看法。“
会议室里所有人都看向了林彻。
赵铭远的表情没变。
他知道这个问题会被问,他递交建议书的时候就预料到了。
他坐得很稳。
林彻看着所长。
“赵总提过一个建议……林总,你怎么看?“
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