The fault tolerant system resource with a low latency time, with a higher order logging system resources trans actions and server via are mirrored logging of higher-level system resources trans actions

摘要

Higher-order trans action logging mechanism for use in conjunction with a shared system resource (10) with a resources - subsystem (12) to the construction of the secondary system resources events and a control method according to the - / processing of sub system (14) with a first and a second sub - computer unit (14a, 14b), each of which has a system resources processor (80a, 80b), the higher system resources processes and system resources requirements of clients (34c, 74c) in corresponding subordinate system resources processes, in each of said first and second sub - computer unit (14a, 14b) of the control method according to the - / processing of sub system (14) in each case comprising:– a in the sub - computer unit (14a, 14b) protocol arranged generator (50g, 92lg) for the recovery of higher-order process information in respect of each of higher-order process of the sub - computer unit (14a, 14b); and– a in the sub - computer unit (14a, 14b) which is arranged in the transaction log for storing the higher-level process information, wherein the recorded sets off a mechanism for the restoration of the operation of the sub - computer unit (14a, 14b) according to any one of a failure of the sub - computer unit (14a, 14b) for the reading of the higher-level process information from the transaction log, and the recovery of the state of the sub - computer unit (14a, 14b) is responsible; and– a transaction log - reflection mechanism..