Yes, ApsaraDB for Redis supports data persistence. This topic describes the data persistence mechanism of ApsaraDB for Redis.
ApsaraDB for Redis Community Edition provides a hybrid of memory and hard disks for storage and backs up data in RDB and append-only file (AOF) files to meet data persistence requirements. You can back up and restore data in the ApsaraDB for Redis console.
- Persistent memory-optimized instances adopt Intel® Optane™ DC persistence memory (AEP) to provide you with in-memory databases that have a large capacity and are compatible with open source Redis. A persistent memory-optimized instance does not use disks to implement data persistence. It provides almost the same performance as an ApsaraDB for Redis Community Edition instance in terms of throughput and latency. This helps improve the reliability of business data.
- Storage-optimized instances are developed based on ESSDs and compatible with core data structures and interfaces of open source Redis. These instances can provide large-capacity, low-cost, and persistent database services. Storage-optimized instances directly store data in ESSDs. This helps reduce costs, improve data reliability, and reduce the amount of reserved memory that is required for the forks of native Redis databases. This instance type applies to scenarios that store warm and cold data and require compatibility with Redis, large capacity, and high access performance.
- Hybrid-storage instances store data in both memory and disks. During off-peak hours, hybrid-storage instances can separate hot data from cold data to ensure a high memory access speed. Hybrid-storage instances also provide a larger storage capacity than instances of ApsaraDB for Redis Community Edition to balance performance and cost.