Heartbeat protocol method and device based on lease

Abstract

The invention aims to provide a heartbeat protocol method and a device based on lease. The method comprises the following steps: sending a heartbeat request to a server in the lease period, and receiving a heartbeat request response from the server; and if the heartbeat request response is abnormal, determining the retry sending interval based on an inverse exponential back-off algorithm, and sending a retry heartbeat request to the server after the retry sending interval until the lease expires or the corresponding heartbeat request response is normal. In the early stage of retry heartbeat requests, two adjacent retry heartbeat requests can be sent at a large sending interval, which reduces the impact pressure of heartbeat requests on network nodes and the server. In the late stage of retry heartbeat requests, the sending interval of retry heartbeat requests is shortened, which enables retry heartbeat requests to be sent at higher frequency. Therefore, the success probability of recovery from network failure is increased, the stability of the network is guaranteed, and the network pressure is reduced.

Description

technical field [0001] The present application relates to the computer field, and in particular to a lease-based heartbeat protocol technology. Background technique [0002] In the distributed lock service system, a coarse-grained mutual exclusion mechanism can ensure that only one client can hold the lock at the same time. Among them, the realization of the lock depends on the session maintenance mechanism based on the lease. After the session times out, the client perceives it before the server. Generally, after the client perceives the timeout, it will notify the application layer that the distributed lock is lost. After the server perceives the timeout, it will release the original lock for other clients to preempt. [0003] The maintenance of the above sessions mainly depends on the heartbeat between the client and the server. When designing the heartbeat protocol, the primary goal is to ensure that in the case of network isolation or server downtime that cannot be qu...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a lease-based heartbeat protocol method and device to solve the unreasonableness of sending heartbeat requests caused by using the heartbeat protocol of a reliable coordination system in a distributed system to maintain the session between the server and the client in the prior art The retry logic has a great impact on network nodes and servers (Server), and applications may lose locks due to short-term network abnormalities, thereby reducing the sensitivity of client devices to network failures

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