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distributed-cache-service/umn/source/service_overview/comparing_redis_versions.rst
proposalbot 6f443bfc8c Changes to dcs_umn from docs/doc-exports#484 (DCS UMN (recreate of #260)) 
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
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2022-11-22 10:17:34 +00:00

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RedisDifference.html

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. The following table describes the differences between these versions.

    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
    Time required for creating an instance 3-15 minutes, or 10-30 minutes for cluster instances. 8 seconds
    QPS 100,000 QPS per node 100,000 QPS per node
    Instance type Single-node, master/standby, and Proxy Cluster Single-node, master/standby and Redis Cluster
    Instance total memory Ranges from 2 GB, 4 GB, 8 GB, to 1024 GB. Regular specifications range from 2 GB, 4 GB, 8 GB, to 1024 GB. Small specifications, such as 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

    Note

    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 <dcs-pd-200312001>.