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Comparing Redis Versions

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

  • Version

    DCS supports Redis 3.0, 4.0, and 5.0. Table 1 describes the differences between these versions. For details about the new features of Redis 4.0 and 5.0, see New Features of DCS for Redis 4.0 and New Features of DCS for Redis 5.0

    Table 1 Differences between Redis versions

    Feature

    Redis 3.0

    Redis 4.0 and Redis 5.0

    Instance deployment mode

    Based on VMs

    Containerized based on physical servers

    CPU architecture

    x86

    x86 and Arm

    Time required for creating an instance

    3–15 minutes

    Cluster instance: 10–30 minutes

    8 seconds

    QPS

    100,000 QPS per node

    100,000 QPS per node

    Public network access

    Supported

    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.

    Capacity expansion/reduction

    Online capacity expansion and reduction

    Online capacity expansion and reduction

    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

    DCS provides single-node, master/standby, Proxy Cluster, and Redis Cluster instance types. For details about their architectures and application scenarios, see DCS Instance Types.

Parent topic: Instance Types/Versions