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

December 2021

Database engine Feature Description Release date References
PolarDB-X 2.0 Intelligent stress testing Intelligent stress testing is available in the China (Hangzhou), China (Shanghai), China (Beijing), and China (Shenzhen) regions. 2021-12-15 Intelligent stress testing

November 2021

Database engine Feature Description Release date References
ApsaraDB RDS for MySQL and PolarDB for MySQL SQL throttling API operations for SQL throttling are added. Throttling keyword strings can be generated based on SQL statements. 2021-11-16 GetSqlConcurrencyControlKeywordsFromSqlText
ApsaraDB RDS for MySQL, ApsaraDB for MongoDB, ApsaraDB RDS for SQL Server, and PolarDB for Oracle SQL diagnostics API operations for SQL diagnostics are added. 2021-11-12

October 2021

Database engine Feature Description Release date References
PolarDB-X 2.0 Intelligent stress testing Intelligent stress testing is available in the Singapore (Singapore) region. 2021-10-14 Intelligent stress testing

September 2021

Database engine Feature Description Release date References
ApsaraDB RDS for MySQL and PolarDB for MySQL Intelligent stress testing Performance data of SQL queries on source database instances and destination database instances is generated and displayed in stress testing reports. You can compare the SQL performance of source database instances and destination database instances. 2021-09-29 Intelligent stress testing
PolarDB for MySQL Intelligent stress testing Advanced settings can be configured for destination database instances. You can specify the endpoints of specific nodes in a database instance to test the specified nodes. 2021-09-29 Intelligent stress testing
ApsaraDB RDS for MySQL instances, self-managed MySQL databases, and PolarDB for MySQL clusters Inspection and scoring The health status of database instances can be inspected and scored on a regular basis. 2021-09-25 Inspection and scoring
RDS MySQL New region ApsaraDB RDS instances that use local SSDs and are deployed in the China (Beijing) region can be automatically scaled up or scaled down. 2021-09-13 Automatic performance scaling
PolarDB-X 2.0 SQL throttling The number of database access requests and the number of concurrent SQL requests can be controlled by using the SQL throttling feature. This feature can help ensure the availability of your database service. 2021-09-10 SQL throttling
ApsaraDB RDS for MySQL and PolarDB for MySQL Query governance DAS provides the query governance feature to help you classify slow queries and manage slow queries based on severity levels. 2021-09-10 Query governance
ApsaraDB RDS for MySQL and PolarDB for MySQL DAS Professional Edition downgrade DAS Professional Edition can be downgraded. 2021-09-09 Purchase DAS Professional Edition
Redis Automatic bandwidth adjustment The bandwidth of ApsaraDB for Redis instances can be automatically adjusted. This feature can help you handle expected and unexpected traffic spikes. 2021-09-09 Automatic bandwidth adjustment

August 2021

Database engine Feature Description Release date References
ApsaraDB RDS for MySQL and PolarDB for MySQL Query governance DAS provides the query governance feature to help you classify slow queries and manage slow queries based on severity level. 2021-08-24 Query governance
RDS MySQL Intelligent stress testing Stress testing can be performed on your database instance. This feature can help you check whether your database instance needs to be scaled up or scaled out to handle traffic spikes. 2021-08-06 Intelligent stress testing for CloudTmall users

July 2021

Database engine Feature Description Release date References
PostgreSQL SQL Explorer The health status of SQL statements can be diagnosed. This can help you troubleshoot performance issues. 2021-07-16 SQL Explorer

June 2021

Database engine Feature Description Release date References
Redis Key analysis Hot keys and big keys in database instances can be identified. 2021-06-12 Enable key analysis

April 2021

Database engine Feature Description Release date References
ApsaraDB RDS for MySQL and PolarDB for MySQL Identification of duplicate indexes Duplicate indexes in ApsaraDB RDS for MySQL instances and PolarDB for MySQL clusters can be identified. 2021-04-15 Storage analysis
ApsaraDB RDS for MySQL and PolarDB for MySQL Identification of potential overflows of auto-increment primary keys Potential overflows of auto-increment primary keys in ApsaraDB RDS for MySQL instances and PolarDB for MySQL clusters can be identified. 2021-04-15 Storage analysis

February 2021

Database engine Feature Description Release date References
ApsaraDB RDS for MySQL and ApsaraDB RDS for PostgreSQL Storage analysis The storage usage of a database instance and the number of days for which the remaining storage space is available can be viewed. You can view the storage information about each table in a database, such as storage usage, tablespace fragments, and diagnostic reports on storage anomalies. 2021-02-27 Storage analysis
MySQL Automatic recycling of tablespace fragments Tablespace fragments can be automatically identified and recycled during a maintenance window after you enable the automatic recycling feature. This feature can help improve database performance and reduce storage costs. 2021-02-01 Automatic tablespace fragment recycling

January 2021

Database engine Feature Description Release date References
MySQL Automatic storage expansion for ApsaraDB RDS for MySQL High-availability Edition instances The storage capacity of ApsaraDB RDS for MySQL High-availability Edition instances can be automatically increased to handle traffic spikes. 2021-01-27 Automatic performance scaling
MySQL Intelligent stress testing Stress testing can be performed on your database instance. This feature can help you check whether your database instance needs to be scaled up or scaled out to handle traffic spikes. 2021-01-01 Intelligent stress testing
MySQL Automatic parameter tuning Parameter tuning can be automatically performed on your database instance. This feature uses machine learning algorithms to specify optimal values for parameters based on the workloads and specifications of your database instance. 2021-01-01 Automatic parameter tuning