Method and device for realizing load balancing

Abstract

The invention discloses a method and a device for realizing load balancing. The method includes the following steps: receiving a domain name resolution request, and determining whether a pre-created shared state bit is a state in which there is a process implementing domain name resolution; if the pre-created shared state bit is not a state in which there is a process implementing domain name resolution, modifying the shared state bit to a state in which there is a process implementing domain name resolution, and carrying out domain name resolution on the received domain name resolution request; if the pre-created shared state bit is a state in which there is a process implementing domain name resolution, waiting until determining that the pre-created shared state bit is a state in which there is no process implementing domain name resolution, modifying the shared state bit to a state in which there is a process implementing domain name resolution, and carrying out domain name resolution on the received domain name resolution request; and at the end of domain name resolution, making the shared state bit restored to a state in which there is no process implementing domain name resolution. According to the technical scheme, through restraining the state of the shared state bit, there is only one domain name resolution carried out at the same time, and domain name resolution can be implemented according to a preset load balancing strategy in order to achieve load balancing.

Description

technical field [0001] The present invention relates to the technical field of Internet access, and more specifically, to a method and device for realizing load balancing. Background technique [0002] With the rapid progress and development of network technology, people access the Internet more and more frequently. Among them, DNS (Domain Name System, Domain Name System) is a distributed database that can map domain names and IP addresses to each other, which can make people access the Internet more conveniently. [0003] At present, the existing DNS load balancing can achieve the load balancing effect according to the preset load balancing strategy under low load. Among them, the load balancing refers to evenly distributing the clients on each node of the cluster to achieve business Balance the effect to avoid excessive business pressure on a certain node. Concurrency means that multiple programs are running at the same time. Here, they are all processing domain name res...

AI Technical Summary

Problems solved by technology

Since the existing balancing solution uses multiple processes for domain name resolution, when the load balancing server receives multiple domain name resolution requests at the same time, the multiple processes in the load balancing server will simultaneously perform domain name resolution. The load bal

Images