Disaster tolerance processing method, device and system, equipment and medium

The embodiment of the invention relates to a disaster tolerance processing method, device and system, equipment and a medium, and the method comprises the steps of obtaining the detection data of a main storage database for a data access request, and If the target switching condition is determined to be satisfied based on the detection data, switching a target request corresponding to the target switching condition in the data access request to a heterogeneous standby storage database, wherein the target switching condition comprises a read switching condition and a write switching condition,the target request corresponding to the read switching condition is a read request, and the target request corresponding to the write switching condition is a read request and a write request. By adopting the technical scheme, the read request and the write request in the data access request can be respectively switched through the heterogeneous standby storage, the switching of the read request of the main storage can be