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TencentDB for Redis
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    Performance

    Last updated: 2023-04-19 14:28:01
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      Specifications

      Memory edition

      Note
      As a trial version, the 256 MB specification on v4.0 or v5.0 is only suitable for product verification in testing environments. We don't recommend that you use it in production environments. It is available only in the following AZs: Guangzhou (Zones 6 and 7), Shanghai (Zones 2, 3, 4 and 5), Beijing (Zones 1, 2, 3, 4, 5, 6, and 7), and Shenzhen Finance (Zones 1, 2, and 3). Other 1 GB and above specifications can be smoothly downgraded to the 256 MB specification.
      v2.8 is unavailable currently, and v4.0 or later is recommended. To purchase v2.8, submit a ticket.
      Feature
      Standard Architecture
      Cluster Architecture
      Compatible Redis version
      2.8
      4.0, 5.0
      6.2
      4.0, 5.0
      6.2
      Memory specification
      256 MB–64 GB
      256 MB–64 GB
      1 GB–64 GB
      2 GB–8 TB
      Shard quantity
      Not supported
      1, 3, 5, 8, 12, 16, 24, 32, 40, 48, 64, 80, 96, 128
      QPS
      80,000–100,000
      80,000–100,000
      80,000–100,000
      80,000–100,000/shard
      Maximum number of connections
      10,000 by default; up to 40,000
      10,000 by default; up to 40,000
      10,000/shard by default; up to 40,000/shard
      Traffic limit
      10 MB/s–64 MB/s
      528 MB/s–608 MB/s
      288 MB/s–72 GB/s
      Multi-database
      Supported
      Supported
      Supported
      Supported
      Mget and Mset
      Supported
      Supported
      Supported
      Supported
      Lua
      Supported
      Supported
      Supported (cross-slot access not supported)
      Supported (cross-slot access not supported)
      Horizontal scaling
      Not supported
      Not supported
      Supported
      Supported
      Replica scaling
      Not supported
      Supported
      Supported
      Supported
      Read/Write separation
      Not supported
      Supported
      Supported
      Supported
      GEO
      Not supported
      Supported
      Supported
      Supported
      Replica quantity
      1
      1–5

      Description of the CPU core quantity

      To ensure the stable operations of the system, each node is assigned with 2-core CPU, one of which is used to process the backend tasks.

      CKV edition

      Feature
      Standard Architecture
      Cluster Architecture
      Compatible Redis version
      3.2
      3.2
      Memory specification
      4 GB–384 GB
      12 GB–48 TB
      Shard quantity
      -
      3–128
      QPS
      80,000–120,000
      Tens of millions
      Maximum number of connections
      12,000–24,000
      12,000–24,000/shard
      Traffic limit
      16 MB/s–256 MB/s
      72 MB/s–32 GB/s
      Multi-database
      Supported
      Supported
      Mget and Mset
      Supported
      Supported
      Lua
      Supported
      Limited support (to use Lua in the cluster edition, you need to make sure that the keys accessed in the Lua script are in the same slot, and the key field must be included in the command parameters)
      Horizontal scaling
      Not supported
      Supported
      Replica scaling
      Not supported
      Not supported
      Read/Write separation
      Not supported
      Not supported
      GEO
      Supported
      Supported

      Traffic and connections

      Memory edition

      Specification (GB)
      Maximum number of connections
      Maximum throughput (MB/s)
      0.25
      3,000
      10
      1
      40,000
      16
      2
      40,000
      24
      4
      40,000
      24
      8
      40,000
      24
      12
      40,000
      32
      16
      40,000
      32
      20
      40,000
      48
      24
      40,000
      48
      32
      40,000
      48
      40
      40,000
      64
      48
      40,000
      64
      60
      40,000
      64

      CKV edition

      Specification (GB)
      Maximum number of connections
      Maximum throughput (MB/s)
      4
      10,000
      24
      8
      10,000
      24
      16
      10,000
      32
      24
      10,000
      32
      32
      10,000
      32
      48
      18,000
      64
      64
      18,000
      64
      80
      18,000
      64
      96
      18,000
      64
      128
      24,000
      128
      160
      24,000
      128
      192
      24,000
      128
      256
      24,000
      256
      320
      24,000
      256
      384
      24,000
      256
      Cluster edition connections = number of connections per shard number of shards; Cluster edition throughput = shard throughput number of shards
      Notes
      After scaling, legacy instances capable of up to 9,000 connections will be capable of 10,000 connections.

      Performance Data

      Performance references

      The time needed to execute Redis commands varies. Businesses use different database commands in their production environments; therefore, the corresponding performance values will also vary. The test results listed here are obtained with specified parameters and are for your reference only. Conduct tests in your actual business environment for more accurate results.

      Single-node test performance

      Redis Instance Specification
      Connections
      QPS
      Memory Edition (Standard Architecture) 8 GB
      10,000
      80,000–100,000
      Memory Edition (Cluster Architecture) 8 GB (single-shard)
      10,000
      80,000–100,000
      CKV Edition (Standard Architecture) 8 GB
      12,000
      80,000–120,000

      Cluster architecture test performance

      Memory Edition (Cluster Architecture) performance = Memory Edition (Standard Architecture) performance number of shards CKV Edition (Cluster Architecture) performance = CKV Edition (Standard Architecture) performance number of shards

      Test method

      Test environment

      Test Client CVM Instances
      CVM Cores
      CVM Memory
      Region
      Redis Instance Specification
      3
      2
      8 GB
      Guangzhou Zone 2
      Memory Edition (Standard Architecture) 8 GB
      3
      2
      8 GB
      Guangzhou Zone 2
      CKV Edition (Standard Architecture) 8 GB

      Test parameters

      redis-benchmark -h 10.66.187.x -p 6379 -a crs-1znib6aw:chen2016 -t set -c 3500 -d 128 -n 25000000 -r 5000000
      redis-benchmark -h 10.66.187.x -p 6379 -a crs-1z5536aw:chen2016 -t set -c 3500 -d 128 -n 25000000 -r 5000000
      redis-benchmark -h 10.66.187.x -p 6379 -a crs-090rjlih:1234567 -t set -c 3500 -d 128 -n 25000000 -r 5000000

      QPS calculation

      Sum of the QPS values of three pressure test clients (tested by redis-benchmark).
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