[metrics] Document view level cardinality limit #5321
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reyang
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Co-authored-by: Cijo Thomas <[email protected]>
| [view](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk.md#view) | ||
| level. Refer to this | ||
| level using `MetricStreamConfiguration.CardinalityLimit`. Refer to this | ||
| [doc](../../docs/metrics/customizing-the-sdk/README.md#changing-maximum-metricpoints-per-metricstream) |
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This section can be updated to be: "../../docs/metrics/customizing-the-sdk/README.md#changing-the-cardinalityLimit", given the name standardization effort: https://github.com/open-telemetry/opentelemetry-dotnet/pull/5328/files.
| OpenTelemetry has a default cardinality limit of `2000` per metric. This limit | ||
| can be configured at `MeterProvider` level using | ||
| can be configured at `MeterProvider` level using the | ||
| `SetMaxMetricPointsPerMetricStream` method, or at individual |
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| `SetMaxMetricPointsPerMetricStream` method, or at individual | |
| `SetCardinalityLimit` method, or at individual |
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Might be nice to explicitly point out in the metrics readme file that cardinality limit will be pre-allocated to prevent user from abusing it. |
This is captured here https://github.com/open-telemetry/opentelemetry-dotnet/tree/main/docs/metrics#memory-preallocation. |
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I merged this and then put some updates on #5328 |
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Follow up #5312.