Welcome to use ApsaraDB for Redis. This topic describes the architecture and features of ApsaraDB for Redis, and helps you know more about this service.

ApsaraDB for Redis is compatible with open-source Redis protocols and provides the database service. The service supports hybrid storage of memory and hard disks. Based on the highly reliable two-node hot standby structure and smoothly scalable cluster architecture, this service is suitable for scenarios that require high read/write performance and flexible configuration changes.

ApsaraDB for Redis supports various types of data, such as strings, lists, sets, sorted sets, and hash tables. The service also supports advanced features, such as transactions, message subscription, and message publishing.

Based on the hybrid storage of memory and hard disks, ApsaraDB for Redis can provide high-speed data read/write capability and support data persistence.

You can deploy ApsaraDB for Redis instances in a flexible architecture. The instances are classified into these editions: standard dual-replica edition and dual-replica cluster edition. These instances are suitable for different scenarios.

  • Standard dual-replica edition: The system synchronizes data between the master node and replica node in real time. If the master node fails, the system automatically performs the failover operation and restores services within a few seconds. The replica node takes over services. This automatic process does not affect your business. The master-replica architecture ensures high availability of system services.
  • Dual-replica cluster edition: Cluster instances run in a distributed architecture. Each node uses a master-replica high-availability structure to automatically perform failover and disaster recovery. Multiple types of cluster instances are applicable to various businesses. You can scale the database system to improve performance as needed.

As a cloud computing service, ApsaraDB for Redis works with hardware and data deployed in the cloud, and provides comprehensive infrastructure planning, network security protections, and system maintenance services. This service allows you to focus on business innovation.


For more information about common types and parameters of all ApsaraDB for Redis editions, such as the maximum number of connections, CPU processing capacity, and performance reference values, see Types and performance.