Specifications and Performance
Last updated:2025-12-22 16:15:22
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.
Feature | Standard Architecture | Cluster Architecture |
Memory specifications | 256MB - 64GB | Single shard: 1 GB to 64 GB |
Number of replicas | 1 - 5 | 1 - 5 |
Number of shards | N/A | 1, 3, 5, 8, 12, 16, 24, 32, 40, 48, 64, 80, 96, 128, and 256 |
QPS | 80000 to 100000 | 80000 to 100000 per shard |
Maximum number of connections | 10000 by default, adjustable up to 40000 | 10000 per shard by default, adjustable up to 40000 |
Traffic limit | 528MB/s - 608MB/s | 288MB/s - 72GB/s |
Multiple databases | Supported | Supported |
Mget and Mset | Supported | Supported |
lua | Supported | Supported (cross-slot access not supported) |
Horizontal scale-out | Not supported | Supported |
Replica scale-out | Supported | Supported |
Read-write separation | Supported | Supported |
Support for GEO | Supported | Supported |
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.
Number of Connections and Traffic
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 |
64 | 40,000 | 64 |
Cluster edition connections = number of connections per shard * number of shards;
Note：
After scaling, legacy instances capable of up to 9,000 connections will be capable of 10,000 connections.
Performance Data
Performance references
As the execution time of commands varies, and database operation commands differ across business scenarios in production environments, the corresponding performance will also vary. The test data provided in this document is a reference value obtained under specified parameters and shall only serve as a reference. Actual performance needs to be verified through tests based on actual business scenarios.
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 |
Cluster architecture test performance
Memory Edition (Cluster Architecture) performance = Memory 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 |
Test parameters
redis-benchmark -h 10.66.187.x -p 6379 -a crs-1znib6aw:chen2016 -t set -c 3500 -d 128 -n 25000000 -r 5000000redis-benchmark -h 10.66.187.x -p 6379 -a crs-1z5536aw:chen2016 -t set -c 3500 -d 128 -n 25000000 -r 5000000redis-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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