Data recovery method and system and readable storage medium

The invention provides a data recovery method and system and a readable storage medium, and the method comprises the following steps: S1, building a data flow diagram based on the distribution condition of data strips in the system, in the data flow diagram, enabling nodes to represent the data strips and decoding nodes respectively, and enabling the edges, connected with the decoding nodes, of the data strips to represent the selection of a recovery path; s2, detecting the data flow diagram, identifying congested decoding nodes, and deleting the congested decoding nodes and edges connected with the congested decoding nodes in the data flow diagram; and S3, selecting different recovery modes according to the number of the recovery paths of the faulted data strip. According to the method, by means of pruning and branch increasing of the large-scale data flow diagram, a proper data recovery scheme is selected, erasure code recovery is executed when branch increasing succeeds, frame insertion recovery is execute