How do I assign a new parameter group to my existing ElastiCache self-designed cluster without restarting the cluster?

Short description

A parameter group acts as a container for engine configuration values. You can apply a parameter group to one or more cache clusters. ElastiCache uses parameter groups to control the runtime properties of your nodes and clusters. You don't need to restart the cluster to modify the parameter group values for an existing cluster.

Resolution

1. Create a new parameter group.
2. Modify the new parameter group and the parameters.
3. Modify the cluster to use the new parameter group.

Note: ElastiCache self-designed clusters provide fine-grained configuration options, and you can use parameter groups for fine-grained control. ElastiCache Serverless caching doesn't have fine-grained control available, and you can't use parameter groups for fine-grained control.

Related information

Parameter management

Redis-specific parameters

Memcached specific parameters