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webVueBlog commentedon Mar 11, 2020
Synchronous is blocking mode, asynchronous is non-blocking mode.
Synchronization is when a process executes a request that takes some time to return
Return the message, and the process will wait until it receives the return message
Asynchronous means that the process does not have to wait forever, but instead continues to perform the following operation, regardless of the appearance of other processes
State. When a message is returned, the system notifies the process to process it, which makes execution more efficient.