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.NET Core 同步和异步的差别是什么

是指Action方法。如:

public ActionResult PushFileData([FromBody] Web_PushFileData file) //同步

public async ActionResult PushFileData([FromBody] Web_PushFileData file) //异步

疑问:对于同步方法,每个请求都是使用同个线程吗?如客户A请求同步Action,还未执行完毕时,客户B请求会阻塞。
对于异步方法,每个请求都是从线程池拿空闲线程出来执行方法?也就是客户A和客户B请求方法,都是在不同子线程里分别执行的。


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