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Redis 3.0 Instance Specifications (Obsolete)

Updated on 2024-11-26 GMT+08:00

This section describes DCS Redis 3.0 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.
  • QPS represents queries per second, which is the number of commands processed per second.
NOTE:
  • Single-node, master/standby, and Proxy Cluster types are available.
  • DCS Redis 3.0 instances have been taken offline at new sites, but can still be used at existing sites. DCS Redis 4.0 or 5.0 instances are recommended.
  • Both x86 and Arm architectures are supported.

Single-Node Instances

For each single-node DCS Redis instance, the available memory is less than the total memory because some memory is reserved for system overheads, as shown in the following table.

Table 1 Specifications of single-node DCS Redis 3.0 instances

CPU

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)

Arm

2

1.2

5000/5000

42/512

50,000

dcs.arm.single_node

4

2.4

5000/5000

64/1536

50,000

8

4.8

5000/5000

64/1536

50,000

16

9.6

5000/5000

85/3072

50,000

32

19.2

5000/5000

85/3072

50,000

64

38.4

5000/6000

128/5120

50,000

x86

2

1.5

5000/50,000

42/512

50,000

dcs.single_node

4

3.2

5000/50,000

64/1536

50,000

8

6.8

5000/50,000

64/1536

50,000

16

13.6

5000/50,000

85/3072

50,000

32

27.2

5000/50,000

85/3072

50,000

64

58.2

5000/60,000

128/5120

50,000

Master/Standby Instances

For each master/standby DCS Redis instance, the available memory is less than that of a single-node DCS Redis instance because some memory is reserved for data persistence, as shown in the following table. The available memory of a master/standby instance can be adjusted to support background tasks such as data persistence and master/standby synchronization.

Table 2 Specifications of master/standby DCS Redis 3.0 instances

CPU

Total Memory

(GB)

Available Memory

(GB)

Maximum Connections Allowed

(Count)

Assured/Maximum Bandwidth

(Mbit/s)

Reference Performance

(QPS)

Specification Code (spec_code in the API)

Arm

2

1.2

5000/5000

42/512

50,000

dcs.arm.master_standby

4

2.4

5000/5000

64/1536

50,000

8

4.8

5000/5000

64/1536

50,000

16

9.6

5000/5000

85/3072

50,000

32

19.2

5000/5000

85/3072

50,000

64

38.4

5000/6000

128/5120

50,000

x86

2

1.5

5000/50,000

42/512

50,000

dcs.master_standby

4

3.2

5000/50,000

64/1536

50,000

8

6.4

5000/50,000

64/1536

50,000

16

12.8

5000/50,000

85/3072

50,000

32

25.6

5000/50,000

85/3072

50,000

64

51.2

5000/60,000

128/5120

50,000

Proxy Cluster Instances

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

Table 3 Specifications of Proxy Cluster DCS Redis 3.0 instances

CPU

Specification

(GB)

Available Memory

(GB)

Maximum Connections Allowed

(Count)

Assured/Maximum Bandwidth

(Mbit/s)

Reference Performance

(QPS)

Specification Code (spec_code in the API)

Arm

64

64

30,000/30,000

600/5120

100,000

dcs.arm.cluster

128

128

60,000/60,000

600/5120

100,000

256

256

60,000/60,000

600/5120

100,000

x86

64

64

90,000/90,000

600/5120

100,000

dcs.cluster

128

128

180,000/180,000

600/5120

100,000

256

256

240,000/240,000

600/5120

100,000

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