CAT Configuration Notes

Configuration Notes

App Insights

Data Sampling

By default, we have set up Application Insights with Ingestion Sampling at 12.5% to minimise costs. This should be reviewed after two weeks of install and increased if possible. Detail about ingestion sampling can be found here

Moving to Adaptive Sampling is in the product roadmap.

Data Retention

By Default, data retention is set to 90 days as this incurs no additional cost (see Application Insights section here for details). This should not be changed.

Storage Accounts

Blob Storage Accounts

Data retention is handled by a rule in the Storage accounts Lifecycle Management. The default value is 14 Days. You can learn more here

Table Storage Retention

Data retention is handled by an azure timer function running every 5 minutes. There is a configuration setting called RetentionPeriodInDays to set the retention period. The default value is 14 days.

SQL Database

Data Retention

Data retention is handled by an azure timer function running every minute. It currently affects the Calls and Streams tables. There is a configuration setting called SqlDataRetentionPeriodInDays to set the retention period. The default value is 14 days.