Modify Instance Specs

Last updated: 2020-02-26 15:16:07

PDF

Operation Scenario

TencentDB for Redis supports instance specification adjustment to enable flexible scaling. You can elastically adjust the specification of your Redis instance based on your actual business needs so as to better optimize resource utilization and costs in real time. This document describes how to modify instance specification in the TencentDB for Redis Console.

Pay as you go instance does not support downsizing.

Directions

Scaling in the Standard Edition

  • When you expand the capacity of the Standard Edition, if the remaining available capacity of the instance is insufficient to meet the capacity expansion requirements, migration will occur, which will not affect the service access. However, there will be a momentary interruption after the migration is completed, and you are recommended to implement a reconnection mechanism for your business.
  • Because the Standard Edition has a maximum capacity of 384 GB, when the capacity reaches 384 GB, it cannot be expanded any further.
  • To avoid the failure of capacity reduction, the capacity of the reduced instance is required to be greater than or equal to 1.3 times of the existing data. After the reduction, the system will automatically refund the fee.
  1. Log in to the Redis Console .
  2. Select the instance to be scaled up on the instance list page, and select configuration change-> expansion, downsize, expansion Node, downsize Node, add replica, or Delete replica.
  3. In the configuration adjustment window that pops up, select the capacity to be adjusted to and click OK .
  4. Return to the instance list. After the status of the instance changes to Running , it can be used normally.

Scaling in the Cluster Edition

  • After the configuration is adjusted, the instance will be charged at the price of the new specification.
  • To avoid the failure of capacity reduction, the capacity of the reduced instance is required to be greater than or equal to 1.3 times of the existing data. After the reduction, the system will automatically refund the fee.
  • When shards are added or deleted, the system will automatically balance the slot configuration and migrate data, which may fail in rare cases. It is recommended to perform such operations during business low points so as to avoid the impact of migration on business access.
  1. In Instance List Page, select the instance to be scaled down. Under configuration change, you can select add shard, Delete shard, expansion Node, scale down Node, add replica, or Delete replica to scale up the cluster.

  2. In the configuration adjustment window that pops up, select the specification to be adjusted to and click OK .

  3. Return to the instance list. After the status of the instance changes to Running , it can be used normally.