Standard Architecture
Last updated:2026-02-04 16:13:23
Architecture Overview
The standard architecture adopts the primary-secondary replication mode, supporting 1 to 5 replica nodes, and is compatible with Redis 4.0, 5.0, 6.2, and 7.0 as well as Valkey 8.0 protocols. The master node provides read/write services, while replica nodes provide high availability assurance. When the master node fails, the system automatically switches to a replica node, ensuring smooth business operation.
Core Components
Component | Description |
Master node | The master node is responsible for handling read/write requests and synchronizing data to replica nodes. Each instance has one master node. |
Replica node | A replica node is responsible for data redundancy and high availability. It synchronizes data from the master node in real time and automatically takes over as the new master node upon master node failure. The system supports 1 to 5 replicas, where more replicas result in higher availability. |
Proxy | A built-in proxy component receives client requests and routes them to the corresponding nodes, providing load balancing and read/write separation capabilities. |
Replica Configuration
A larger number of replicas provides higher availability. All replica nodes participate in high-availability failover. When the number of replicas is greater than or equal to 1, you can enable the read/write separation feature to vertically scale read performance. For more information, see Read/Write Separation.
Version | Supported Replica Quantity | Read/Write Separation |
Redis 4.0, 5.0, 6.2, and 7.0 | 1–5 | Supported |
Valkey 8.0 | 1–5 | Supported |
Specification Limits
Item | Value | Description |
Capacity | 0.25–64 GB | Upgrade the architecture to the cluster architecture (up to 8 TB). For detailed instructions, see Upgrading the Instance Architecture. |
Performance upper limit | 100,000 QPS | Tencent Cloud conducts multiple stress tests in standard testing environments and uses stable values as official references. For details, see Specifications and Performance. |
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