This page provides details on the limits that apply to using Cloud Logging.
Logging usage limits
| Category | Maximum value |
|---|---|
| Size of a log entry | 256 KB1 |
| Size of an entries.write request | 10 MB1 |
| Number of entries.write API calls | 60,000 per minute, per project2 |
| Number of entries.list API calls | 1 per second, per project |
| Number of projects or other resource names in a single entries.list API call | 100 |
| Export sinks | 200 per project |
| Exclusion queries | 50 per sink |
| Logs Buckets | 10 per project |
1 This approximate limit is based on internal data sizes, not the actual REST API request size.
2 Using log exclusions does not reduce
this number because logs are excluded after the entries.write call is
made.
Logs-based metrics
| Category | Maximum value |
|---|---|
| Length of label value | 1,024 bytes |
| Length of label description | 800 bytes |
| Length of metric description | 8,000 bytes |
| Active time series1 per metric | 30,000 |
| Metric descriptors per project | 500 |
| Histogram buckets per custom distribution metric | 200 |
1A time series is active if you have written data points to it within the last 24 hours.
Logging API quotas and limits
| Category | Maximum value |
|---|---|
| API usage | To view your quotas, go to the API dashboard. Click an API and select Quotas. |
| Lifetime of API page tokens | 24 hours |
Requesting more Cloud Logging API quota
You can request higher Logging API limits using the Google Cloud Console:
In the Quotas page, use the checkboxes to select Cloud Logging API, then click EDIT QUOTAS.
Billing must be enabled on the project in order to click the checkboxes.
In the Edit Quotas panel, complete the form with your Name, Email , and Phone details, then click Next.
In the Edit Quotas panel, select the service to expand the view, then edit the quotas in that service to your requested limit. Click Done.
Click Submit request.
The other limits described on this page are fixed.
For more information, go to Working with quotas.
Logs retention periods
| Log type | Default retention period | Custom retention | Logs bucket |
|---|---|---|---|
| Admin Activity audit logs | 400 days |
Not configurable | _Required |
| System Event audit logs | 400 days |
Not configurable | _Required |
| Access Transparency logs | 400 days |
Not configurable | _Required |
| Data Access audit logs | 30 days |
Configurable | _Default |
| All other logs | 30 days |
Configurable | _Default |
For logs buckets with a configurable retention period, you can configure Cloud Logging to retain your logs between 1 day and 3650 days. For details, see Storing logs: Custom retention.