Usage restrictions
Updated at：2025-11-03
Baidu Log Service (BLS) product has the following usage limits. To request adjustments, please submit a ticket
| Category | Limitation items | Limitations |
|---|---|---|
| Basic resources | Projects | Up to 100 projects can be created under each accountID. To request more, submit a ticket |
| LogStores | Up to 200 LogStores can be created under each project. To request more, submit a ticket | |
| Shards | Up to 50 Shards can be created under each LogStore. To request more, submit a ticket | |
| Transmission tasks | Up to 300 transmission tasks can be created under each accountID. To request more, submit a ticket | |
| Tokens | Up to 100 tokens can be created under each accountID. To request more, submit a ticket | |
| Agent groups | Up to 200 instance groups can be created under each accountID. To request more, submit a ticket | |
| Quick queries | Up to 200 quick queries can be created under each accountID. To request more, submit a ticket | |
| Dashboards | Up to 500 dashboards can be created under each accountID. To request more, submit a ticket | |
| Chart groups | Up to 50 chart groups can be created under each dashboard. To request more, submit a ticket | |
| Charts | Up to 200 charts can be created under each chart group. To request more, submit a ticket | |
| Alarm tasks | Up to 100 alarm tasks can be created under each accountID. To request more, submit a ticket | |
| Scheduled SQL tasks | Up to 100 schedule SQL tasks can be created under each accountID. To request more, submit a ticket | |
| Logshippers | Up to 100 logshippers can be created under each accountID. To request more, submit a ticket | |
| Log storage period | Storage period of each LogStore can be set from 1 to 3650 days, or as permanent | |
| Logrecord size | The maximum size for a single log record is 512KB | |
| Batch size | Each batch size of written data should not exceed 1MB or 1000 entries | |
| Data read/write | Single shard write traffic | Maximum 5MB/s. To request more, submit a ticket |
| Single LogStore write traffic | Maximum 250MB/s. To request more, submit a ticket | |
| Query analysis | Query concurrency | Number of concurrent queries per accountID, maximum 50 |
| Search statement response result data volume limit | Maximum 1000 results per Match search | |
| Analysis statement response result data volume limit | Maximum 100000 results per Select analysis | |
| Reserved fields | @timestamp | Timestamp of data written to LogStore |
| @stream | Logstream name: A logstream represents a series of logrecords from the same log agent source |