LindormTSDB enforces limits on naming, quotas, and column values. Review these limits before you start data development.
Naming rules
| Database object | Constraint |
|---|
| Database name | 2–64 characters; digits, uppercase letters, lowercase letters, and underscores (_) |
| Table name | Up to 128 characters; digits, uppercase letters, lowercase letters, and underscores (_) |
| Tag column name | Up to 200 characters; visible characters only |
| Field column name | Up to 200 characters; visible characters only |
| Timestamp column name | Up to 200 characters; visible characters only |
Quotas
| Quota | Limit |
|---|
| Databases in LindormTSDB | Up to 16, including the default database |
| Time series tables per database | Up to 10,000 |
| Columns per time series table | Up to 1,024 (tag columns, timestamp columns, and field columns combined) |
Column values
| Column type | Constraint |
|---|
| Tag column | Up to 20,480 characters; visible characters only |
| Field column | Up to 20,480 characters; visible characters only |
| Timestamp column | Must be a timestamp in milliseconds (ms) |