Grid Transaction-Level Concurrency Control Protocol

In this paper, the grid transaction-level (GTL) concurrency control protocol is proposed. According to the operating characteristics of the grid services, the grid transaction-level concurrency control protocol re-defines four types of transaction operations: read operation, write operation,append operation, look operation. When the speculative shadows of transactions are created, the more redundancy resources in the grid, the higher the priority of transaction, the shorter the deadline of transaction, the more the number of speculative shadows that the transaction can establish; less and vice versa. If there is a new read - write conflict between the two services and a speculation shadow has to meet the needs of serialization order, it don't need create a new speculative shadow. Finally, the theory proof shows that the grid transaction-level concurrency control protocol ensures the serialization of transactions.