相信同学们看过很多web前端、大前端或者全栈开发课程。 但大部分内容的重心都在前端部分，而这一次我们要换个中心——后端。 前端和后端都是 Web 架构的必要组成部分，没有优先级。 因此，工作中偏爱后端的同学可以快速学习和充电。
(I believe that students have seen many web front-end, large front-end or full stack development courses. But most of the content focuses on the front end, and this time we need to change the center - the back end. Both the front-end and the back-end are necessary components of the web architecture and have no priority. Therefore, students who prefer the back end at work can learn and recharge quickly.)
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