Quotas and limits

This document contains the current resource capacity limits and per-minute API request quotas for Memorystore for Redis Cluster.

Instance limits

Memorystore for Redis Cluster enforces the following usage limits:

Limit	Value
Databases per instance	1
Usage units per instance	250

Max clients

Max clients is the maximum number of client connections that you can have for each node of a node type without experiencing performance issues.

To make sure that you don't exceed the maximum number of client connections, we recommend that you monitor the /cluster/node/clients/connected_clients metric.

The following table lists the node types that are available for Memorystore for Redis Cluster and the maximum number of client connections that you can have for each node type.

Node type	Max clients^1
redis-shared-core-nano	5,000
redis-standard-small	16,000 (default). Max value is 32,000
redis-highmem-medium	32,000 (default). Max value is 64,000
redis-highmem-xlarge	64,000

Caution: We recommend that you use the redis-shared-core-nano node type for development or testing purposes only because this node type has no SLA. If you run Memorystore for Redis Cluster in a production environment, then we recommend using the redis-standard-small, redis-highmem-medium, or redis-highmem-xlarge node types. For more information about these node types, see Choose a node type.

¹ For instructions on adjusting the maximum client connection limit, see Configure an instance.

Cluster usage units

The per-project cluster usage units for a cluster in Memorystore for Redis Cluster is calculated by the following formula:

Cluster usage units = (shard_count) * (1 + replica_count)

The regional quota for Memorystore for Redis Cluster limits the total amount of usage units that you can provision across all of your clusters in a region.

For example, if you provision three clusters in your project with 3 shards and 1 replica each in us-central1, then you consume 18 units out of the total regional unit quota for us-central1.

Per-minute API requests quota

Note:

• You cannot request a quota increase for Memorystore for Redis Cluster API operations, such as instance create, update, and delete. There is no limit to the number of Redis commands you can run, such as Redis SET, GET, and DEL.
• Follow the Exponential backoff recommendations to reduce the number of API requests made if an error is encountered.

The per-minute quotas for Memorystore for Redis API requests/operations are as follows, and are subject to change:

API Requests Quota	Value
Create or delete Redis Cluster requests per project per minute	10
Redis Cluster requests per project per minute	60

Create or delete Redis Cluster requests include:

• Create operations (gcloud redis clusters create)
• Delete operations (gcloud redis clusters delete)

Memorystore for Redis Cluster API operations include:

• Get operations (gcloud redis clusters describe)
• List operations (gcloud redis clusters list)
• Create operations (gcloud redis clusters create)
• Delete operations (gcloud redis clusters delete)
• Update operations (gcloud redis clusters update)

This quota is for redis.googleapis.com requests/operations, not OSS Redis protocol/commands. These limits apply to each Google Cloud console project and are shared across all applications and IP addresses using that project.