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This page describes the differences between the available Redis tiers.
Memorystore for Redis supports Basic and Standard
Tiers. The Basic Tier is best suited for applications that use Redis as a cache
and can withstand a cold restart and full cache flush. Standard Tier instances
provide High Availability
using replication, read replicas, and automatic failover.
It is not possible to upgrade from Basic Tier to Standard Tier or the other way
around. If you want to move data from an existing Basic Tier instance to a new
Standard Tier instance, use import and export
to move your data.
Tier architecture
The following diagrams show the architectures for the
Memorystore for Redis service tiers.
Provides redundancy and availability using replication
Provides redundancy and availability using replication to backup data,
and multiple Read replicas to increase read throughput
Max Redis primary size
300 GB
300 GB
300 GB
Max network bandwidth
16 Gbps
16 Gbps
16 Gbps total for writes. 16 Gbps per node for reads.1
I/O threads
Yes2
Yes2
Yes2
Scale primary size
Yes
Yes
Yes
Scale number of read replicas
No
No
Yes
Cross-zone replication
No
Yes3
Yes3
Automatic failover
No
Yes
Yes
Read replicas
No
No
Yes
In-transit encryption
Yes
Yes
Yes
Maintenance window
Yes
Yes
Yes
Cloud Monitoring
Yes
Yes
Yes
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.
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.
3
For more information about region-specific considerations, see
Geography and regions.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-25 UTC."],[],[],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)."]]
