What are labels?
A label is a key-value pair that helps you organize your Google Cloud reCAPTCHA Enterprise keys. You can attach a label to each resource, then filter the resources based on their labels. Information about labels is forwarded to the billing system, so you can break down your billing charges by label.
Common uses of labels
We do not recommend creating large numbers of unique labels, such as for timestamps or individual values for every API call. Here are some common use cases for labels:
Team or cost center labels: Add labels based on team or cost center to distinguish reCAPTCHA Enterprise keys owned by different teams (for example,
team:analytics). You can use this type of label for cost accounting or budgeting.
Component labels: For example,
Environment or stage labels: For example,
State labels: For example,
Requirements for labels
The labels applied to a resource must meet the following requirements:
- Each resource can have multiple labels, up to a maximum of 64.
- Each label must be a key-value pair.
- Keys have a minimum length of 1 character and a maximum length of 63 characters, and cannot be empty. Values can be empty, and have a maximum length of 63 characters.
- Keys and values can contain only lowercase letters, numeric characters, underscores, and dashes. All characters must use UTF-8 encoding, and international characters are allowed.
- The key portion of a label must be unique. However, you can use the same key with multiple resources.
- Keys must start with a lowercase letter or international character.
These limits apply to the key and value for each label, and to the individual Google Cloud resources that have labels. There is no limit on how many labels you can apply across all resources within a project.