Distributed system and equipment for preventing global resource out-of-order, and its application method

Abstract

The invention discloses a distributed system for avoiding global resource disorder, which comprises main control equipment and service equipment, wherein the main control equipment transmits resource operating information to the service equipment according to service requests, and the service equipment utilizes a preset resource-occupying marker to judge whether a target resource is available and utilizes a preset buffer linked list to restore services stopped because of resource contention. The invention also correspondingly discloses the service equipment for avoiding global resource disorder and a method for applying the distributed system. The distributed system, the service equipment and the application method thereof can simply avoid the synchronous disorder of global resources while avoiding cross-module resource release, and can automatically restore the services.

Description

technical field [0001] The invention relates to distributed system application technology, in particular to a distributed system, equipment and application method for avoiding global resource disorder. Background technique [0002] In a distributed system, multiple devices need to work together to share the work tasks of the system, and a reliable and fast data synchronization mechanism between devices in the system is the primary condition for the collaborative work of a distributed system. On a distributed system, some global resources are shared by multiple modules and need to be synchronized across devices for backup or related business settings. Since it is shared by multiple modules, and the related data of each task is synchronized, the task scheduling algorithm of the operating system cannot guarantee the order in which messages arrive at the target device, which may lead to the problem of out-of-order resources, resulting in the use of specific resources incorrectly...

AI Technical Summary

Problems solved by technology

However, this solution also has certain defects: First, if a new business covers an old business, it is necessary to perform a difficult cross-module release of resources related to the old business, which takes a long time and is prone to errors, thus affecting the new business Second, as resources are continuously called by new services, SeqNum is also increasing continuously. Since the counter has the possibility of data overflow, it is also necessary to consider the flipping problem of SeqNum, which increases the difficulty of algorithm design

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