This topic provides the release notes for Database Autonomy Service (DAS) and provides links to related references.

December 2020

Database engine Feature Description Release date References
Redis Analysis of slow queries Trends, statistics, and details of slow query log records can be queried. 2020-12-23 Slow query log analysis
MongoDB Analysis of slow queries Trends, statistics, and details of slow query records can be queried. 2020-12-16 Analyze slow query logs

November 2020

Database engine Feature Description Release date References
MySQL SQL Explorer and audit The SQL search, SQL Explorer, and security audit features are combined into the SQL Explorer and audit feature. This can help you obtain SQL statement information, troubleshoot performance issues, and identify high-risk request sources in a more efficient manner. 2020-11-19 Overview of SQL Explorer and audit
MySQL Detection and identification of abnormal SQL statements SQL requests can be aggregated and filtered by using machine learning. This can help you identify abnormal SQL statements in a fast, efficient, and accurate manner. 2020-11-05 Abnormal SQL request identification

October 2020

Database engine Feature Description Release date References
MySQL DAS Professional Edition The security audit feature is provided by DAS Professional Edition to ensure data security for your databases. The security audit feature identifies high-risk SQL statements, detects SQL injections, and identifies new request sources. 2020-10-29 Usage notes on DAS Professional Edition
Redis Cache analysis Backup files of ApsaraDB for Redis instances can be analyzed to provide information about the total memory usage and the memory used by each big key. This feature helps you reduce issues such as insufficient memory and performance degradation that are caused by skewed keys. 2020-10-26 Cache analysis

September 2020

Database engine Feature Description Release date References
MySQL SQL search Information about SQL statements can be queried and exported. 2020-09-25 Search
MySQL SQL Explorer The health status of SQL statements can be diagnosed to help you troubleshoot performance issues. 2020-09-25 SQL Explorer
MySQL Security audit Risks such as high-risk SQL statements, SQL injections, and new request sources can be automatically identified by DAS. 2020-09-25 Security audit

August 2020

Database engine Feature Description Release date References
MySQL and PostgreSQL Analysis of slow queries Trends, statistics, and details of slow query records can be queried. 2020-08-24 Slow query log analysis
MongoDB Performance trend Performance trends of database instances can be queried by using multiple methods. You can view performance trends in a specified time range, compare performance trends based on specified dates, and create a custom monitoring dashboard to display the performance trend charts that you want to view. 2020-08-20 Performance trends
MongoDB Monitoring dashboard A custom monitoring dashboard can be created to display information about multiple database instances and metrics. This way, you can correlate, compare, and view the monitoring data of your database instances for daily O&M. 2020-08-11 Monitoring dashboards
MongoDB Alert configuration Custom alert rules and templates can be created. If an alert rule is triggered by a database instance, DAS automatically sends an alert. 2020-08-05 Configure an alert

July 2020

Database engine Feature Description Release date References
Redis Session management Information about sessions between an ApsaraDB for Redis instance and a client can be queried in real time. The information includes the client information, the commands that are run, and the connection duration. You can close abnormal sessions based on your business requirements. 2020-07-12 Instance sessions

June 2020

Database engine Feature Description Release date References
Redis Performance trend Performance trends of database instances can be queried by using multiple methods. You can view performance trends in a specified time range, compare performance trends based on specified dates, and create a custom monitoring dashboard to display the performance trend charts that you want to view. 2020-06-18 Performance trends
Redis Monitoring dashboard A custom monitoring dashboard can be created to display information about multiple database instances and metrics. This way, you can correlate, compare, and view the monitoring data of your database instances for daily O&M. 2020-06-12 Monitoring dashboards
Redis Alert configuration Custom alert rules and templates can be created. If an alert rule is triggered by a database instance, DAS automatically sends an alert. 2020-06-08 Configure an alert

May 2020

Database engine Feature Description Release date References
MySQL and PostgreSQL Storage analysis The storage usage of a database instance and the number of days that the remaining storage space is available can be viewed. You can also view information about each table in a database, such as storage usage, tablespace fragments, and diagnostic reports on storage anomalies. 2020-05-24 Storage analysis
MySQL Capacity assessment Suggestions on capacity optimization, performance capacity, memory usage, storage usage, and the number of days that the remaining storage space is available can be viewed. 2020-05-22 Capacity assessment
MySQL Session management The session statistics of a database instance can be queried. 2020-05-14 View the session statistics of an ApsaraDB RDS for MySQL instance
MySQL and PostgreSQL Deadlock analysis The most recent deadlock in a database can be queried and analyzed. 2020-05-11 Deadlock analysis
MySQL and PostgreSQL 10-second SQL analysis SQL statements that are executed at the most frequent rate and whether slow SQL queries exist can be analyzed within a 10-second time window. 2020-05-02 10-second SQL analysis

April 2020

Database engine Feature Description Release date References
MySQL Monitoring dashboard A custom monitoring dashboard can be created to display information about multiple database instances and metrics. This way, you can correlate, compare, and view the monitoring data of your database instances for daily O&M. 2020-04-18 Monitoring dashboards
MySQL Performance trend Performance trends of database instances can be queried by using multiple methods. You can view performance trends in a specified time range, compare performance trends based on specified dates, and create a custom monitoring dashboard to display the performance trend charts that you want to view. 2020-04-17 Performance trends
MySQL Alert configuration Custom alert rules and templates can be created. If an alert rule is triggered by a database instance, DAS automatically sends an alert. 2020-04-16 Configure an alert

March 2020

Database engine Feature Description Release date References
MySQL Diagnostics The performance overview of each database instance can be viewed and performance issues can be identified based on the performance overview. 2020-03-16 Diagnostics
MySQL Diagnostic reports Diagnostic reports of database instances can be created and queried. 2020-03-16 Diagnostic reports
MySQL Automatic SQL diagnostics Abnormal SQL statements can be identified. 2020-03-16 SQL diagnostics
Redis 24/7 anomaly detection Anomalies on database instances can be detected in a more efficient manner by using the 24/7 anomaly detection feature compared with using detection methods based on threshold values. 2020-03-16 24/7 anomaly detection
Redis Auto scaling Database instances can be automatically scaled up to handle traffic spikes. 2020-03-16 Automatic performance scaling

February 2020

Database engine Feature Description Release date References
MySQL Auto scaling Database instances can be automatically scaled up to handle traffic spikes. 2020-02-19 Automatic performance scaling
MySQL Performance snapshot Performance snapshots can be generated to record anomaly details. The anomaly details recorded in snapshots can help you troubleshoot database issues. You can configure automatic snapshot generation based on alerts or manually trigger a snapshot generation task. 2020-02-19 Performance snapshot
MySQL Automatic SQL optimization Online DDL that is supported by the MySQL kernel is used to prevent table locking. 2020-02-19 Automatic SQL optimization
MySQL Automatic SQL throttling Conditions that trigger automatic SQL throttling can be configured. If the specified conditions are met, SQL throttling is automatically triggered. 2020-02-19 Automatic SQL throttling
MySQL 24/7 exception detection Anomalies on database instances can be detected in a more efficient manner by using the 24/7 anomaly detection feature compared with using detection methods based on threshold values. 2020-02-19 Performance anomaly detection
MySQL Event subscription Event subscription policies can be configured. DAS sends notifications based on the specified notification delivery methods if events are triggered. 2020-02-19 Event subscription
MySQL Autonomy service Events that occur within a specified time range can be queried. You can query anomalies, optimization events, auto scaling events, and other events. 2020-02-19 Autonomy center