There are fine-grained limits and quotas for sending data to and querying data from Dash0 that apply to the configuration and telemetry you send to Dash0.
Note, though, that you should never hit any of these limits with OpenTelemetry automatic instrumentations or any normal observability use-case.
| Limit | Value |
|---|
| Maximum number of spans per trace | 2,000 |
| Limit | Value |
|---|
| Maximum character length of a span name | 128 |
| Maximum number of attributes per span | 32 ¹ |
| Maximum character length for span attribute keys | 128 |
| Maximum character length for span attribute values | 2,048 |
| Maximum past timestamp for a span to be ingested | 6 hours |
| Maximum future timestamp for a span to be ingested | 3 days |
| Maximum span duration for a span to be queryable | 1 day |
¹ Resource, scope, span event and span link attributes do not count against this limit.
| Limit | Value |
|---|
| Maximum character length of a span event name | 128 |
| Maximum number of span events per span | 8 |
| Maximum number of attributes per span event | 8 ¹ |
| Maximum character length for span event attribute keys | 128 |
| Maximum character length for span event attribute values | 2,048 |
| Maximum number of span links per span | 128 |
¹ Resource, scope and span attributes do not count against this limit.
| Limit | Value |
|---|
| Maximum number of attributes per span link | 8 ¹ |
| Maximum character length for span link attribute keys | 128 |
| Maximum character length for span link attribute values | 2,048 |
¹ Resource, scope and span attributes do not count against this limit.
| Limit | Value |
|---|
| Maximum length of a log body | 4 KB |
| Maximum number of attributes per log record | 16 ¹ |
| Maximum character length for log record attribute keys | 128 |
| Maximum character length for log record attribute values | 2,048 |
| Maximum past timestamp for a log record to be ingested | 6 hours |
| Maximum future timestamp for a log record to be ingested | 3 days |
¹ Resource and scope attributes do not count against this limit.
| Limit | Value |
|---|
| Maximum character length of a metric name | 128 |
| Maximum character length of a metric description | 512 |
| Maximum character length of a metric unit | 64 |
| Maximum number of datapoints per metric | Unlimited |
| Maximum number of metadata entries per metric | 8 ¹ |
| Maximum character length for metadata keys | 128 |
| Maximum character length for metadata values | 2,048 |
¹ Resource and scope attributes, and metrics metadata do not count against this limit.
| Limit | Value |
|---|
| Maximum number of attributes per metric datapoint | 16 ¹ |
| Maximum character length for metric datapoint attribute keys | 128 |
| Maximum character length for metric datapoint attribute values | 2,048 |
| Maximum past timestamp for a metric datapoint to be ingested | 6 hours |
| Maximum future timestamp for a metric datapoint to be ingested | 3 days |
| Maximum count of exemplars | 8 |
| Maximum count of filtered attributes for an exemplar | 8 |
| Maximum character length for filtered attribute keys for an exemplar | 128 |
| Maximum character length for filtered attribute values for an exemplar | 2,048 |
| Maximum count of histogram buckets | 32 |
| Maximum count of quantiles for summaries | 16 |
¹ Resource and scope attributes, and metrics metadata do not count against this limit.
| Limit | Value |
|---|
| Maximum number of check rules per dataset | 128 |
| Limit | Value |
|---|
| Maximum number of dashboards per dataset | 512 |
| Limit | Value |
|---|
| Max events per 10 minutes | 4,096 |
| Max events per 10 seconds | 128 |
