[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-09-05。"],[],[],null,["# Redis tier capabilities\n\n| **Note:** If you are looking for the Memorystore for Redis Cluster documentation, see [Memorystore for Redis Cluster overview](/memorystore/docs/cluster/overview).\n\nThis page describes the differences between the available Redis tiers.\n\nMemorystore for Redis supports Basic and Standard\nTiers. The Basic Tier is best suited for applications that use Redis as a cache\nand can withstand a cold restart and full cache flush. Standard Tier instances\nprovide [High Availability](/memorystore/docs/redis/high-availability)\nusing replication, read replicas, and automatic failover.\n\nIt is not possible to upgrade from Basic Tier to Standard Tier or the other way\naround. If you want to move data from an existing Basic Tier instance to a new\nStandard Tier instance, use [import and export](/memorystore/docs/redis/import-export-overview)\nto move your data.\n\nTier architecture\n-----------------\n\nThe following diagrams show the architectures for the\nMemorystore for Redis service tiers.\n\n### Basic Tier\n\n- One Redis node\n- Ephemeral cache\n\n### Standard Tier\n\n- Provides [High Availability](/memorystore/docs/redis/high-availability) with replication\n- Fails over to replica in the case of primary node failure\n\n### Standard Tier with read replicas\n\n- Provides [High Availability](/memorystore/docs/redis/high-availability) with replication\n- Read replicas allow for distributed reads\n\nFeature comparison\n------------------\n\n^1^ The maximum write throughput is 16 Gbps. Read throughput is dependent on the number of nodes (read replicas) in the instance, including the primary node. For example, if you have an instance with 1 primary node and 2 read replicas, the total read throughput is 48 Gbps.\n\n^2^ I/O threads are only available on M3 instances or higher running Redis version 6.x. For more information, see [Redis version 6.x](/memorystore/docs/redis/supported-versions#redis_version_6x).\n\n^3^ For more information about region-specific considerations, see [Geography and regions](/docs/geography-and-regions#regions_and_zones)."]]