https://support.huaweicloud.com/intl/en-us/ally-visitor-1-usermanual-rds/rds_12_0053.html
High Storage Usage Due to Unpurged Binlogs_Performance Issues_RDS for MySQL_Troubleshooting_User...
The storage usage of a read replica or primary instance is high. Running SHOW BINARY LOGS or SHOW MASTER LOGS and comparing the results with other instances...
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unpurged transaction histories Archives - Percona
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