Redis 6.0 Instance Specifications¶
This section describes DCS Redis 6.0 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.
Bandwidth: You can view the Flow Control Times metric to check whether the bandwidth has exceeded the limit.
Currently, DCS for Redis 6.0 supports single-node, master/standby, and Redis Cluster instances based on x86 CPUs.
Single-Node¶
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¶
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¶
Specification code: Table 3 only lists the specification codes of instances with 2 replicas (default). The specification names reflect the number of replicas, for example, redis.cluster.xu1.large.r2.4 (2 replicas | 4 GB) and redis.cluster.xu1.large.r1.4 (1 replica | 4 GB).
IP addresses: Number of occupied IP addresses = Number of shards x Number of replicas. For example:
8 GB | Redis Cluster | 2 replicas: Number of occupied IP addresses = 3 x 2 = 6
Available memory per node = Instance available memory/Master node quantity. For example:
For example, a 64 GB instance has 64 GB available memory and 8 master nodes. The available memory per node is 64/8 = 8 GB.
Maximum connections limit per node = Maximum connections limit/Master node quantity For example:
For example, a 64 GB instance has 8 master nodes and the maximum connections limit is 150,000. The maximum connections limit per node = 150,000/3 = 50,000.
Note
The maximum bandwidth and assured bandwidth of a cluster is for the entire instance, and not for a single shard. The relationship between the instance bandwidth and the bandwidth of a single shard is as follows:
Instance bandwidth = Bandwidth of a single shard x Number of shards
For a cluster instance, if the memory of a single shard is 1 GB, the bandwidth of a single shard is 384 Mbit/s. If the memory of a single shard is greater than 1 GB, the bandwidth of a single shard is 768 Mbit/s.
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 |