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

December 2021

Database engineFeatureDescriptionRelease dateReferences
PolarDB-X 2.0Intelligent stress testingThe intelligent stress testing feature is available in the China (Hangzhou), China (Shanghai), China (Beijing), and China (Shenzhen) regions. 2021-12-15Intelligent stress testing

November 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQL and PolarDB for MySQLSQL throttlingAn API operation for the SQL throttling feature is added. Throttling keyword strings can be generated based on SQL statements. 2021-11-16GetSqlConcurrencyControlKeywordsFromSqlText
ApsaraDB RDS for MySQL, ApsaraDB RDS for MySQL, ApsaraDB RDS for PostgreSQL, ApsaraDB RDS for SQL Server, ApsaraDB for MongoDB, and PolarDB for PostgreSQL (Compatible with Oracle)SQL diagnosticsAPI operations for the SQL diagnostics feature are added. 2021-11-12

October 2021

Database engineFeatureDescriptionRelease dateReferences
PolarDB-X 2.0Intelligent stress testingThe intelligent stress testing feature is available in the Singapore region. 2021-10-14Intelligent stress testing

September 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQL and PolarDB for MySQLIntelligent stress testingPerformance 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. 2021-09-29Intelligent stress testing
PolarDB for MySQLIntelligent stress testingAdvanced 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. 2021-09-29Intelligent stress testing
ApsaraDB RDS for MySQL, self-managed MySQL, and PolarDB for MySQLInspection and scoringThe health status of database instances can be inspected and scored on a regular basis. 2021-09-25Inspection and scoring
ApsaraDB RDS for MySQLNew regionApsaraDB RDS instances that use local SSDs and are deployed in the China (Beijing) region can be automatically scaled up or scaled down. 2021-09-13Automatic performance scaling
PolarDB-X 2.0SQL throttlingThe 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. 2021-09-10SQL throttling
ApsaraDB RDS for MySQL and PolarDB for MySQLQuery governanceDAS provides the query governance feature to help you classify slow queries and manage slow queries based on severity levels. 2021-09-10Query governance
ApsaraDB RDS for MySQL and PolarDB for MySQLDAS Professional Edition downgradeDAS Professional Edition can be downgraded. 2021-09-09Purchase DAS Professional Edition
ApsaraDB for RedisAutomatic bandwidth adjustmentThe bandwidth of ApsaraDB for Redis instances can be automatically adjusted. This feature can help you handle expected and unexpected traffic spikes. 2021-09-09Automatic bandwidth adjustment

August 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQL and PolarDB for MySQLQuery governanceDAS provides the query governance feature to help you classify slow queries and manage slow queries based on severity levels. 2021-08-24Query governance
ApsaraDB RDS for MySQLIntelligent stress testingStress testing can be performed on your database instance. This feature can help you check whether your database instance needs to be scaled up to handle traffic spikes. 2021-08-06Intelligent stress testing for CloudTmall users

July 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for PostgreSQLSQL ExplorerThe health status of SQL statements can be diagnosed. This can help you troubleshoot performance issues. 2021-07-16SQL Explorer

June 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB for RedisKey analysisHot keys and big keys in database instances can be identified. 2021-06-12Key analysis

April 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQL and PolarDB for MySQLIdentification of duplicate indexesDuplicate indexes in ApsaraDB RDS for MySQL instances and PolarDB for MySQL clusters can be identified. 2021-04-15Storage analysis
ApsaraDB RDS for MySQL and PolarDB for MySQLIdentification of potential overflows of auto-increment primary keysPotential overflows of auto-increment primary keys in ApsaraDB RDS for MySQL instances and PolarDB for MySQL clusters can be identified. 2021-04-15Storage analysis

February 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQL and ApsaraDB RDS for PostgreSQLStorage analysisThe 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. 2021-02-27Storage analysis
ApsaraDB RDS for MySQLAutomatic recycling of tablespace fragmentsTablespace fragments can be automatically identified and recycled during an O&M window after you enable the automatic recycling feature. This feature can help improve database performance and reduce storage costs. 2021-02-01Automatic tablespace fragment recycling

January 2021

Database engineFeatureDescriptionRelease dateReferences
ApsaraDB RDS for MySQLAutomatic storage expansionThe storage capacity of ApsaraDB RDS for MySQL High-availability Edition instances can be automatically increased to handle traffic spikes. 2021-01-27Automatic storage expansion
ApsaraDB RDS for MySQLIntelligent stress testingStress testing can be performed on your database instance. This feature can help you check whether your database instance needs to be scaled up to handle traffic spikes. 2021-01-01Intelligent stress testing
ApsaraDB RDS for MySQLAutomatic parameter tuningParameter 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. 2021-01-01Automatic parameter tuning