TencentDB for Redis®
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Performance
Last updated: 2024-11-05 10:05:51
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, 7.0 | 4.0, 5.0 | 6.2, 7.0 |
Compatible with Memcached | Edition 1.6 | | | | |
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.
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 |
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
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 |
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 |
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 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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