Method of realizing heartbeat mechanism, apparatus and system thereof

Abstract

An embodiment of the invention provides a method of realizing a heartbeat mechanism, an apparatus and a system thereof. A quantity of heartbeat responses sent by a node can be reduced so that unnecessary resource occupation cost in a distributed database system can be decreased. The scheme comprises the following steps that an exchange node acquires a heartbeat request sent by a first node to a second node, wherein the heartbeat request includes an identification of the first node and an identification of the second node; the exchange node records and receives a first moment of the heartbeat request; the exchange node inquires a second moment of receiving a second node sending message most recently by the exchange node in buffer memory information according to the identification of the second node, wherein the buffer memory information stores a corresponding relation of a moment for any one node to send a message and the identification of the node and the moment is received by the exchange node; and if an absolute value of a difference value between the first moment and the second moment is less than a threshold, the exchange node sends the heartbeat responses to the first node.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method, device and system for realizing a heartbeat mechanism. Background technique [0002] The heartbeat mechanism means that the sender regularly sends a custom heartbeat request (for example, a heartbeat packet or heartbeat frame), and the receiver sends a heartbeat response to the sender after receiving the structure, letting the sender know that the receiver is "online". to confirm that the receiving end is currently working normally. [0003] In a distributed database system, in order to improve the reliability of the system, multiple copies of data shards are saved. Multiple copies of the same data shard can be stored on different nodes. A group of nodes that store these multiple copies A data synchronization unit can be formed. In order to ensure the data consistency between these multiple copies, each node in the data synchronization unit can use a synchron...

AI Technical Summary

Problems solved by technology

[0004] However, as the scale of the distributed database system becomes larger and larger, the number of nodes in a data synchronization unit increases. Therefore, the number of heartbeat requests and heartbeat responses sent between nodes increases significantly, resulting in an increase in the load of the entire distributed database system.

Images