Log Retention and Purging in Nebula Logger

The Retention Model

Every Log__c record has a LogRetentionDate__c. When that date passes, the log becomes eligible for purging by LogBatchPurger. The retention date is set at insert time on Log__c from a combination of:

• LoggerSettings__c.DefaultNumberOfDaysToRetainLogs__c on the effective hierarchy record.
• Optionally, LoggerScenarioRule__mdt.NumberOfDaysToRetainLogs__c when the log's scenario matches a scenario rule (scenario-specific overrides win over the hierarchy default).

If no retention days are configured, LogRetentionDate__c is left null and the log is never auto-purged.

LoggerSettings__c Retention Fields

The retention side of LoggerSettings__c is a hierarchy custom setting - values cascade org default -> profile -> user. The relevant fields: