Data source calling load balancing method and device, electronic equipment and medium

The embodiment of the invention discloses a data source calling load balancing method and device, electronic equipment and a medium. A specific embodiment of the method comprises the following steps: acquiring a data source historical call information set; performing modal decomposition on the data source historical calling information set to obtain a historical calling modal information set; performing call amount prediction on the historical call mode information set to obtain a predicted data source call amount set; in response to determining that the available resources of the data source do not meet the condition of the load data source calling information set, performing grading processing on the data source calling information set to obtain a calling grade information set; carrying out call flow limiting processing on the data source call information set; and in response to determining that the available resources of the data source meet the condition of the load data source call information set, carry