我有一個 Redis 集群，其中包含區域中的R5.4xlarge實體EU Frankfurt。我有 5 個分片，每個分片有 3 個副本。我無法自動縮放此集群。從 AWS 檔案中，我知道 AWS Elasticache 通過增加
- 分片數或
- 副本數
從檔案中：-
ElastiCache for Redis supports scaling for the following dimensions:
Shards – Automatically add/remove shards in the cluster similar to manual online resharding. In this case, ElastiCache for Redis auto scaling triggers scaling on your behalf.
Replicas – Automatically add/remove replicas in the cluster similar to manual Increase/Decrease replica operations. ElastiCache for Redis auto scaling adds/removes replicas uniformly across all shards in the cluster.
但是，我無法找到根據指標自動縮放的規定。上述EU Frankfurt區域集群配置是否可以自動縮放，或者我錯過了什么？
uj5u.com熱心網友回復：
對于大小的實體，自動縮放被禁用，4xlarge這就是您找不到Autoscaling為集群啟用選項卡的原因。在 AWS 檔案https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/AutoScaling.html中，只有以下 AWS 實體及其大小支持自動縮放
ElastiCache for Redis Auto Scaling is limited to the following:
Redis (cluster mode enabled) clusters running Redis engine version 6.0 onwards
Instance type families - R5, R6g, M5, M6g
Instance sizes - Large, XLarge, 2XLarge
Auto Scaling in ElastiCache for Redis is not supported for clusters running in Global datastores, Outposts or Local Zones.
AWS Auto Scaling for ElastiCache for Redis is not available in the following regions: China (Beijing), China (Ningxia), AWS GovCloud (US-West) and AWS GovCloud (US-East).
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