Method for priority scheduling of data exchange between databases

The invention provides a method for priority scheduling of data exchange between databases, comprising the following steps: step S1, configuring the priority of data to be transmitted before executingthe data exchange process task, comprising the steps of: first priority, second priority and third priority; 2, sending that configured priority data exchange flow to a data exchange node, and executing data exchange according to the priority order; Step S3: when the data exchange flow to be executed by the data exchange node comprises only the third priority data and new second priority data areadded, slowing the transmission speed of the third priority data down, releasing resources, and transmitting the data exchange flow with the second priority data preferentially; Step S4: When the data exchange flow to be executed by the data exchange node includes the third priority data and/or the second priority data, and new first priority data is added, directly inserting the first priority data into the starting poin