Limits and quotas

Limits and quotas apply to each installation for your app. See the Partitioning section in the App storage API reference for further detail.

You should avoid using the app storage API for storing the following types of data:

• Files
• Secrets and credentials

Limits

The app storage API has the following limits:

• Keys
  • A key may be up to 100 characters.
  • A key must match the regex /^[a-zA-Z0-9:._\s-#]+$/.
• Entities
  • A value may be up to 32 KB when persisted.
• Queries may only be performed on the key field.

Quotas

When calling the app storage API, each installation has the following quotas.

Reads

Read and query operations are rate limited, with the following quotas:

• 50 reads / second per installation.
• 10 queries / second per installation.

Writes

Update and delete operations are rate limited, with the following quotas:

• 10 updates / second per installation.
• 10 deletes / second per installation.

Storage

Each app may store a maximum of 100 MB per installation.