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Comparing DCS Redis Versions

Updated at: Mar 17, 2020 GMT+08:00

When creating a DCS Redis instance, you can select the cache engine version and the instance type.

  • Version

    Select 3.0, 4.0, or 5.0.

    Table 1 Differences between Redis versions



    Redis4.0 & Redis5.0

    Instance deployment mode

    Based on VMs

    Containerized based on physical servers

    Time required for creating an instance

    3–15 minutes

    Cluster instance: 10–30 minutes

    8 seconds


    100,000 QPS per node

    100,000 QPS per node

    Public network access


    Not supported

    Domain name connection

    Supported in VPC

    Supported in VPC

    Visualized data management

    Not supported

    Provides Web CLI for Redis access and data management.

    Instance type

    Single-node, master/standby, and Proxy Cluster

    Single-node, master/standby, and Redis Cluster

    Instance total memory

    Ranges from 2 GB to 1 TB.

    Regular specifications range from 2 GB to 1 TB. Small specifications of 128 MB, 256 MB, 512 MB, and 1 GB are also available for single-node and master/standby instances.

    Scale-up or scale-down

    Online scale-up and scale-down

    Online scale-up and scale-down

    Backup and restoration

    Supported for master/standby and cluster instances

    Supported for master/standby and cluster instances

    The underlying architectures vary by Redis version. Once a Redis version is chosen, it cannot be changed. For example, you cannot upgrade a DCS Redis 3.0 instance to Redis 4.0 or 5.0. If you require a higher Redis version, create a new instance that meets your requirements and then migrate data from the old instance to the new one.

  • Instance type

    Select from single-node, master/standby, and cluster types. For details about their architectures and application scenarios, see DCS Instance Types.

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