Load balancing method and device applicable to distributed database and server

The invention relates to a load balancing method and device applicable to a distributed database and a server. The method comprises the steps of: completing a distributed management node initializingstage of carrying out election of a distributed management node and metadata management and a load balancing stage of selecting proper distributed database nodes for a client, sending metadata to thedistributed management node when each distributed database node is started up, enabling the distributed management node to carry out sorting according to a weight value of each distributed database node, arranging the metadata of all the distributed database nodes into a metadata array, and storing the metadata array in the distributed management node and each distributed database node; and simultaneously, storing current load state information of all the distributed database nodes into each corresponding distributed database node. Therefore, when a current distributed management node is off-line, a proper next distrib