What DCS Instance Type Changes Are Supported?
Version |
Supported Type Change |
Precautions |
---|---|---|
Redis 3.0 |
From single-node to master/standby |
The instance cannot be connected for several seconds and remains read-only for about one minute. |
From master/standby to Proxy Cluster |
|
|
Memcached |
From single-node to master/standby |
Services are interrupted for several seconds and remain read-only for about 1 minute. |
Redis 4.0/5.0 |
From master/standby or read/write splitting to Proxy Cluster |
|
From Proxy Cluster to master/standby or read/write splitting |
For details about the commands supported by different types of instances, see Command Compatibility.
Any instance type changes not listed in the preceding table are not supported. To modify specifications while changing the instance type, see IP Switching.
To check whether you can change the instance type of an instance, see the parameters displayed on the Modify Specifications page on the DCS console.
Instance Scaling and Upgrade FAQs
- Can I Upgrade Version for a DCS Redis Instance, for Example, from Redis 4.0 to Redis 5.0?
- How Do I Upgrade a Single-Node or Master/Standby Redis 3.0 Instance?
- Are Services Interrupted If Maintenance is Performed During the Maintenance Time Window?
- Are Instances Stopped or Restarted During Specification Modification?
- What DCS Instance Type Changes Are Supported?
- Are Services Interrupted During Specification Modification?
- Why Do I Fail to Modify the Specifications for a DCS Instance?
- How Do I Reduce the Capacity of a DCS Instance?
- How Do I Add Shards to a Cluster DCS Redis Instance Without Changing the Memory?
- How Do I Handle an Error When I Use Lettuce to Connect to a Redis Cluster Instance After Specification Modification?
- Can I Expand a Single Shard of a Cluster Instance (Scale-Up)?
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