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Redis 4.0 and 5.0 Instance Specifications

Updated on 2024-07-29 GMT+08:00

This section describes DCS Redis 4.0 and 5.0 instance specifications, including the total memory, available memory, maximum number of connections allowed, maximum/assured bandwidth, and reference performance.

The following metrics are related to the instance specifications:

  • Used memory: You can check the memory usage of an instance by viewing the Memory Usage and Used Memory metrics.
  • Maximum connections: The maximum number of connections allowed is the maximum number of clients that can be connected to an instance. To check the number of connections to an instance, view the Connected Clients metric. After an instance is created, you can change the maximum number of connections of the instance by modifying the maxclients parameter on the Instance Configuration > Parameters page on the console. This parameter cannot be modified for Proxy Cluster instances.
  • QPS represents queries per second, which is the number of commands processed per second.
  • Bandwidth: You can view the Flow Control Times metric to check whether the bandwidth has exceeded the limit.
NOTE:
  • Single-node, master/standby, and Redis Cluster types are available.
  • Only the x86 architecture is supported. The Arm architecture is not supported.

Single-Node Instances

Table 1 Specifications of single-node DCS Redis 4.0 or 5.0 instances

Total Memory

(GB)

Available Memory

(GB)

Max. Connections (Default/Limit)

(Count)

Assured/Maximum Bandwidth

(Mbit/s)

Reference Performance

(QPS)

Specification Code (spec_code in the API)

0.125

0.125

10,000/10,000

40/40

80,000

redis.single.xu1.tiny.128

0.25

0.25

10,000/10,000

80/80

80,000

redis.single.xu1.tiny.256

0.5

0.5

10,000/10,000

80/80

80,000

redis.single.xu1.tiny.512

1

1

10,000/50,000

80/80

80,000

redis.single.xu1.large.1

2

2

10,000/50,000

128/128

80,000

redis.single.xu1.large.2

4

4

10,000/50,000

192/192

80,000

redis.single.xu1.large.4

8

8

10,000/50,000

192/192

100,000

redis.single.xu1.large.8

16

16

10,000/50,000

256/256

100,000

redis.single.xu1.large.16

24

24

10,000/50,000

256/256

100,000

redis.single.xu1.large.24

32

32

10,000/50,000

256/256

100,000

redis.single.xu1.large.32

48

48

10,000/50,000

256/256

100,000

redis.single.xu1.large.48

64

64

10,000/50,000

384/384

100,000

redis.single.xu1.large.64

Master/Standby Instances

By default, a master/standby instance has two replicas (including the master). There is one master node.

Number of IP addresses occupied by a master/standby instance = Number of master nodes x Number of replicas. For example:

2 replicas: Number of occupied IP addresses = 1 x 2 = 2

3 replicas: Number of occupied IP addresses = 1 x 3 = 3

The following table lists the specification codes (spec_code) when there are two default replicas. Change the replica quantity in the specification codes based on the actual number of replicas. For example, if an 8 GB master/standby x86-based instance has two replicas, its specification code is redis.ha.xu1.large. r2.8. If it has three replicas, its specification code is redis.ha.xu1.large. r3.8.

Table 2 Specifications of master/standby DCS Redis 4.0 or 5.0 instances

Total Memory

(GB)

Available Memory

(GB)

Max. Connections (Default/Limit)

(Count)

Assured/Maximum Bandwidth

(Mbit/s)

Reference Performance

(QPS)

Specification Code (spec_code in the API)

0.125

0.125

10,000/10,000

40/40

80,000

redis.ha.xu1.tiny.r2.128

0.25

0.25

10,000/10,000

80/80

80,000

redis.ha.xu1.tiny.r2.256

0.5

0.5

10,000/10,000

80/80

80,000

redis.ha.xu1.tiny.r2.512

1

1

10,000/50,000

80/80

80,000

redis.ha.xu1.large.r2.1

2

2

10,000/50,000

128/128

80,000

redis.ha.xu1.large.r2.2

4

4

10,000/50,000

192/192

80,000

redis.ha.xu1.large.r2.4

8

8

10,000/50,000

192/192

100,000

redis.ha.xu1.large.r2.8

16

16

10,000/50,000

256/256

100,000

redis.ha.xu1.large.r2.16

24

24

10,000/50,000

256/256

100,000

redis.ha.xu1.large.r2.24

32

32

10,000/50,000

256/256

100,000

redis.ha.xu1.large.r2.32

48

48

10,000/50,000

256/256

100,000

redis.ha.xu1.large.r2.48

64

64

10,000/50,000

384/384

100,000

redis.ha.xu1.large.r2.64

Redis Cluster Instances

In addition to larger memory, Redis Cluster instances feature more connections allowed, higher bandwidth allowed, and more QPS than single-node and master/standby instances.

  • Specification name: The following table only lists the specification names of 2-replica x86-based instances. The specification names reflect the number of replicas, for example, redis.cluster.xu1.large.r2.8 (x86 | 2 replicas | 8 GB) and redis.cluster.xu1.large.r3.8 (x86 | 3 replicas | 8 GB).
  • IP addresses: Number of occupied IP addresses = Number of shards x Number of replicas. For example:

    4 GB | Redis Cluster | 3 replicas: Number of occupied IP addresses = 3 x 3 = 9

  • Available memory per node = Instance available memory/Master node quantity. For example:

    A 24 GB instance has 24 GB available memory and 3 master nodes. The available memory per node is 24/3 = 8 GB.

  • Maximum connections per node = Instance maximum connections/Master node quantity. For example:

    A 4 GB instance has 3 master nodes and the maximum connections limit is 150,000. The maximum connections limit per node = 150,000/3 = 50,000.

Table 3 Specifications of Redis Cluster DCS Redis 4.0 or 5.0 instances

Total Memory

(GB)

Available Memory

(GB)

Shards (Master Nodes)

Max. Connections (Default/Limit)

(Count)

Assured/Maximum Bandwidth

(Mbit/s)

Reference Performance

(QPS)

Specification Code (spec_code in the API)

4

4

3

30,000

/150,000

2304/2304

240,000

redis.cluster.xu1.large.r2.4

8

8

3

30,000

/150,000

2304/2304

240,000

redis.cluster.xu1.large.r2.8

16

16

3

30,000

/150,000

2304/2304

240,000

redis.cluster.xu1.large.r2.16

24

24

3

30,000

/150,000

2304/2304

300,000

redis.cluster.xu1.large.r2.24

32

32

3

30,000

/150,000

2304/2304

300,000

redis.cluster.xu1.large.r2.32

48

48

6

60,000

/300,000

4608/4608

> 300,000

redis.cluster.xu1.large.r2.48

64

64

8

80,000

/400,000

6144/6144

500,000

redis.cluster.xu1.large.r2.64

96

96

12

120,000

/600,000

9216/9216

> 500,000

redis.cluster.xu1.large.r2.96

128

128

16

160,000

/800,000

12,288/12,288

1,000,000

redis.cluster.xu1.large.r2.128

192

192

24

240,000

/1,200,000

18,432/18,432

> 1,000,000

redis.cluster.xu1.large.r2.192

256

256

32

320,000

/1,600,000

24,576/24,576

> 2,000,000

redis.cluster.xu1.large.r2.256

384

384

48

480,000

/2,400,000

36,864/36,864

> 2,000,000

redis.cluster.xu1.large.r2.384

512

512

64

640,000

/3,200,000

49,152/49,152

> 2,000,000

redis.cluster.xu1.large.r2.512

768

768

96

960,000

/4,800,000

73,728/73,728

> 2,000,000

redis.cluster.xu1.large.r2.768

1024

1024

128

1,280,000

/6,400,000

98,304/98,304

> 2,000,000

redis.cluster.xu1.large.r2.1024

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