Distributed transaction processing method, system, apparatus and readable storage medium

A distributed transaction processing method, wherein the method is performed by a distributed transaction processing system comprising one or more processors and a memory storing instructions that, when executed by the one or more processors, cause the distributed transaction processing system to implement a transaction process processing module, a policy data management module, and a distributed transaction manager, the method comprising:

• the policy data management module creating and initializing a historical version table, where the historical version table is used to record, for each field of a target data entity, a data content and a version information of every changed version of each field, wherein the data content includes a changed content of a field in the changed version, and the version information includes a version number of the changed version in which the content of the field is changed, an initialized version information includes a first version information, and the first version information corresponds to first version data content of the target data entity;
• the transaction process processing module requesting the distributed transaction manager to start a global transaction;
• the transaction process processing module receiving a first-type operation request for the target data entity, and sending the first-type operation request to the policy data management module, where the first-type operation request is used to request to perform the first-type operation on the first version data content of the target data entity, and the first-type operation includes at least one of an adding, deleting, and changing operation;
• in response to the first-type operation request, the policy data management module reading a historical version table, recording second version data content obtained by performing the first-type operation on the first version data content, and registering a branch transaction with the distributed transaction manager, where the branch transaction is a related transaction that performs the first-type operation;
• and
• the distributed transaction manager notifying, based on a first request for submitting the global transaction sent by the transaction process processing module, the policy data management module to submit the branch transaction.