This topic describes the limits on resources such as projects, Logstores, machine groups, log groups, and alerts.
Scale-out operations are free. However, you are charged for the scaled-out resources based on standard pricing.
For more information about scale-out operations, see Manage resource quotas.
Basic resource limits
Quota metrics | Description | Default value | Adjustable upper limit |
Project limit | You can create up to 150 projects per Alibaba Cloud account. | 150 | |
Logstore limit | The maximum number of Logstores in a project. | 200 | 400 |
Shard limit | The maximum number of shards in a project. | 400 | 800 |
Logtail configuration limit | The maximum number of Logtail configurations in a project. | 200 | 400 |
Machine group limit | The maximum number of machine groups in a project. | 200 | 400 |
Dashboard limit | The maximum number of dashboards in a project. | 100 | 400 |
Chart limit per dashboard | The maximum number of charts in a dashboard. | 200 | 400 |
Saved search limit | The maximum number of saved searches in a project. | 100 | 400 |
Export task limit | The maximum number of export tasks in a project. | 100 | 400 |
Import task limit | The maximum number of import tasks in a project. | 100 | 400 |
Scheduled SQL limit | The maximum number of scheduled SQL jobs in a project. | 100 | 400 |
Data transformation job limit | The maximum number of data transformation jobs in a project. | 100 | 400 |
Alert limit | The maximum number of alerts in a project. | 100 | 400 |
Subscription task limit | The maximum number of subscription tasks in a project. | 100 | 400 |
Project write traffic limit (GB/min) | The total write traffic from all Logstores in a project per minute. | 100 | 200 |
Project write requests limit (10,000/min) | The total number of write requests for all Logstores in a project per minute. | 60 | 200 |
Project read requests limit (10,000/min) | The total number of read requests for all Logstores in a project per minute. | 60 | 200 |
Logstore limits
The pay-by-ingested-data billing mode supports all features of Simple Log Service. Value-added features such as query and analysis, data transformation, intelligent alerting, and data shipping do not incur additional fees. However, these features are subject to quota limits. The following table describes the limits.
Quota limit | Description |
Data transformation volume | The maximum data transformation volume for a single Logstore is 100 TB per month. |
Scheduled SQL data volume | The maximum data volume for scheduled SQL jobs for a single Logstore is 20 TB per month. |
Data shipping volume | The maximum data shipping volume from a single Logstore is 100 TB per month. |
Data consumption volume | The maximum data consumption volume from a single Logstore is 100 TB per month. |
Alerting job data volume | The maximum data volume for alerting jobs for a single Logstore is 100 TB per month. |
Data read and write limits
Category | Limitations | Description | Remarks |
Write traffic | The maximum write traffic for raw data is 100 GB/min. | If the limit is exceeded, the system returns a 403 status code and the Inflow Quota Exceed error message. | |
Write requests | The maximum number of write requests is 600,000 per minute. | If the limit is exceeded, the system returns a 403 status code and the Write QPS Exceed error message. | |
Read requests | The maximum number of read requests is 600,000 per minute. | If the limit is exceeded, the system returns a 403 status code and the Read QPS Exceed error message. | |
Write traffic | Each shard supports a write throughput of 5 MB/s. | This is not a hard limit. If this limit is exceeded, the service is provided on a best-effort basis, and service quality is not guaranteed. | |
Write requests | The maximum number of write requests is 500 per second. | This is not a hard limit. If this limit is exceeded, the service is provided on a best-effort basis, and service quality is not guaranteed. | |
Read traffic | The maximum read throughput is 20 MB/s. | This is not a hard limit. If this limit is exceeded, the service is provided on a best-effort basis, and service quality is not guaranteed. | |
Read requests | The maximum number of read requests is 100 per second. | This is not a hard limit. If this limit is exceeded, the service is provided on a best-effort basis, and service quality is not guaranteed. |