Shared resource access method based on zookeeper, client, server and system

Abstract

The invention discloses a shared resource access method based on zookeeper, a client, a server and a system. The method comprises the following steps that when an access request for a preset resourceis sent to the server, and corresponding unique instant ordered nodes are created under a catalogue corresponding to the resource, wherein the corresponding unique instant ordered nodes comprise nodeserial numbers; the change of all the instant ordered nodes under the catalogue sent by the server is obtained; when it is judged that the node serial numbers of the own instant ordered nodes are minimum according to the change, a lock is obtained from the server so as to obtain the permission for having access to the resource. On the basis of the method, the single-point problem, the non-reentryproblem, the non-blocking problem and the problem that the lock cannot be released can be effectively solved, and the lock is high in safety and can be durable.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a zookeeper-based shared resource access method, client, server and system. Background technique [0002] In a distributed system, it is often necessary to coordinate actions among various systems. If different systems or different hosts of the same system share one or a group of resources, when accessing these resources, mutual exclusion is often required to prevent mutual interference and ensure consistency. In this case, you need Use distributed locks. [0003] The implementation method of the existing distributed lock based on the database is as follows: create a table in the database, the table contains at least the "resource name" field with unique constraint properties, when a certain method or resource is to be locked , just add a record to the table, and delete this record when you want to release the lock. [0004] Due to the unique constraint on the "resource name...

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Problems solved by technology

[0010] For the above problems, the object of the present invention is to provide a zookeeper-based shared resource access method, client, server, and system, which can effectively solve single-point problems, non-reentrant problems, non-blocking problems and locks that cannot be released. , the lock has high security and can be persistent

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