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二、SpringBoot一键开启虚拟线程，比点外卖还简单，这一点在爱思助手下载最新版本中也有详细论述
，更多细节参见PDF资料
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Engineer B gets a similar feature. He also looks at the problem, but he sees an opportunity to build something more “robust.” He introduces a new abstraction layer, creates a pub/sub system for communication between components, adds a configuration framework so the feature is “extensible” for future use cases. It takes three weeks. There are multiple PRs. Lots of excited emojis when he shares the document explaining all of this.