Design and Implementation of Redis Cluster Online Horizontal Expansion by Management
With the expansion of enterprise production system scale,data concurrency and business complexity are constantly in-creasing.Redis distributed cluster design is often used as a layer of memory cache to alleviate the pressure of calling databases,im-proving response speed and service level.As the amount of data increases,the memory of the initially launched Redis cluster will gradually reach the upper limit of the entire cluster.Rebuilding the cluster with new nodes requires downtime,and vertical expan-sion of single node memory will bring resource bottlenecks.How to achieve online horizontal expansion of the Redis cluster has be-come an urgent problem for enterprises.This article proposes a solution for online horizontal expansion of Redis clusters,and em-beds operations into specific management systems through the management of Redis servers,achieving one-stop inspection,expan-sion,and data redistribution.The Redis cluster can be expanded without business downtime.Research has shown that this solution can assist enterprises timely and rapid online horizontal expansion of Redis clusters,avoiding IO,CPU,and memory resource bottle-necks caused by vertical expansion,and reducing operational workload.It has been applied in core systems of financial enterprises and has achieved good results.
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