Method, device, equipment and readable storage medium for obtaining distributed lock

Abstract

The invention discloses a method for obtaining a distributed lock. The method comprises the following steps: firstly, constructing a distributed lock corresponding to business requirement, writing target data in a previously generated target table in which the distributed lock is stored, then obtaining feedback information after the target data are written therein, determining whether a target distributed lock is successfully obtained or not through judging whether the feedback information is consistent with target information, and obtaining the distributed lock by identifying the type of thefeedback information according to an identification result when the feedback information and the target information are not consistent. By applying the mode of obtaining the distributed lock, when anitem of business obtains the distributed lock successfully, other business can also be used for continuously writing target data into the target table, queuing up to wait is not required, and when theconcurrent quantity is relatively high, the situation that the system deadlocks as multiple items of business await each other to release locks and locked resources can be avoided. In addition, the invention further discloses a device, equipment and a readable storage medium for obtaining the distributed lock, and the effects are as shown above.

Description

technical field [0001] The invention relates to the field of computer applications, in particular to a distributed lock management method, device and readable storage medium. Background technique [0002] Most of today's IT systems adopt multi-instance distributed deployment. The advantage is to ensure the high availability of the system and achieve the horizontal expansion capability of the system. However, it also brings high complexity of system design and competition for shared resources. Access and other issues. [0003] Distributed locks are a way to control synchronous access to shared resources between distributed systems. Only through the application of distributed locks can access shared resources be based on the distributed locks. In a distributed system, there are business scenarios that require coordinated access to shared resources, and data executed by scheduled tasks cannot be repeated multiple times. If different systems or different hosts of the same syst...

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Problems solved by technology

[0006] The embodiment of the present application provides a method, device, device, and readable storage medium for acquiring distributed locks, so as to solve the problem of deadlock in the system caused by different services waiting for each other in the traditional method of acquiring distributed locks in the prior art The problem

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