This topic describes the release notes for Database Autonomy Service (DAS) and provides links to the relevant topics.
December 2021
| Database engine | Feature | Description | Release date | References |
| PolarDB-X 2.0 | Intelligent stress testing | The intelligent stress testing feature 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 | An API operation for the SQL throttling feature is added. Throttling keyword strings can be generated based on SQL statements. | 2021-11-16 | GetSqlConcurrencyControlKeywordsFromSqlText |
| 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 diagnostics | API operations for the SQL diagnostics feature are added. | 2021-11-12 |
October 2021
| Database engine | Feature | Description | Release date | References |
| PolarDB-X 2.0 | Intelligent stress testing | The intelligent stress testing feature is available in the 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, self-managed MySQL, and PolarDB for MySQL | Inspection and scoring | The health status of database instances can be inspected and scored on a regular basis. | 2021-09-25 | Inspection and scoring |
| ApsaraDB RDS for 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 | Enable and manage DAS Economy Edition and DAS Enterprise Edition |
| ApsaraDB for 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 levels. | 2021-08-24 | Query governance |
| ApsaraDB RDS for 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 to handle traffic spikes. | 2021-08-06 | Intelligent stress testing for CloudTmall users |
July 2021
| Database engine | Feature | Description | Release date | References |
| ApsaraDB RDS for 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 |
| ApsaraDB for Redis | Key analysis | Hot keys and big keys in database instances can be identified. | 2021-06-12 | 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 |
| ApsaraDB RDS for MySQL | Automatic recycling of tablespace fragments | Tablespace 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. | 2021-02-01 | Automatic tablespace fragment recycling |
January 2021
| Database engine | Feature | Description | Release date | References |
| ApsaraDB RDS for MySQL | Automatic storage expansion | The storage capacity of ApsaraDB RDS for MySQL High-availability Edition instances can be automatically increased to handle traffic spikes. | 2021-01-27 | Automatic space expansion |
| ApsaraDB RDS for 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 to handle traffic spikes. | 2021-01-01 | Intelligent stress testing |
| ApsaraDB RDS for 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 |