This topic describes the release notes for ApsaraDB RDS and provides links to the relevant references.

Updates in minor engine versions

August 2021

Database engine Category Feature Description Release date References
SQL Server Optimized Maximum storage capacity for primary instance types The maximum storage capacity that is supported for primary instance types is increased to 16,000 GB.

This adjustment is not supported for primary RDS instances that run SQL Server 2008 R2.

2021-08-30 Primary ApsaraDB RDS for SQL Server instance types
PostgreSQL New Time zone configuration at instance creation Users can configure the time zone of an ApsaraDB RDS for PostgreSQL instance when they create the instance. 2021-08-20 Create an ApsaraDB RDS for PostgreSQL instance
MariaDB TX Optimized Buffer_Pool_Size parameter Users can reconfigure the Buffer_Pool_Size parameter of an ApsaraDB RDS for MariaDB TX instance on the Parameters page of the instance in the ApsaraDB RDS console. 2021-08-16 Adjust the size of the InnoDB buffer pool for an ApsaraDB RDS for MariaDB TX instance
MySQL New Transparent Data Encryption (TDE) for ApsaraDB RDS instances that run MySQL 5.7 on RDS Enterprise Edition TDE is supported. TDE can be used to perform real-time I/O encryption and decryption on data files. Developers can use TDE without the need to modify the configuration data on their applications. 2021-08-16 Configure TDE for an ApsaraDB RDS for MySQL instance
MySQL New Automatic storage expansion for ApsaraDB RDS for MySQL instances that are equipped with local SSDs The automatic storage expansion feature of Database Autonomy Service (DAS) can automatically expand the storage capacity during peak hours to ensure service stability. 2021-08-16 Enable automatic scale-up for an ApsaraDB RDS for MySQL instance
MySQL Optimized CreateDBInstance operation The CreateDBInstance operation can be called to create multiple ApsaraDB RDS for MySQL instances at a time. 2021-08-13 A new version is available
SQL Server New TDE with Bring Your Own Keys (BYOKs) TDE with BYOKs is supported for ApsaraDB RDS for SQL Server instances. 2021-08-04 Configure TDE for an ApsaraDB RDS for SQL Server instance

July 2021

Database engine Category Feature Description Release date References
SQL Server New Download of physical backup files of individual databases The physical backup files of each individual database that is created on an ApsaraDB RDS for SQL Server instance can be downloaded. 2021-07-29 Download the data and log backup files of an ApsaraDB RDS for SQL Server instance
PostgreSQL Optimized Username length The username of each account on an ApsaraDB RDS for PostgreSQL instance that is equipped with standard SSDs or enhanced SSDs (ESSDs) must be 2 to 63 characters in length. 2021-07-20 Create an account on an ApsaraDB RDS for PostgreSQL instance
SQL Server New TDE TDE is supported for ApsaraDB RDS instances that run SQL Server 2019 SE. 2021-07-09 Configure TDE for an ApsaraDB RDS for SQL Server instance
MySQL New Automatic storage expansion The automatic storage expansion feature of DAS can automatically expand the storage capacity during peak hours to ensure service stability. 2021-07-01 Enable automatic scale-up for an ApsaraDB RDS for MySQL instance
PostgreSQL New Major engine version upgrade The major engine version of an ApsaraDB RDS for PostgreSQL instance that runs the RDS Basic Edition can be upgraded. 2021-07-01 Upgrade the major engine version of an ApsaraDB RDS for PostgreSQL instance

June 2021

Database engine Category Feature Description Release date References
PostgreSQL New Fully encrypted databases Fully encrypted databases are supported for ApsaraDB RDS instances that run PostgreSQL 11. Data from database clients is encrypted before it is transmitted to fully encrypted databases. Fully encrypted databases help defend against internal and external security threats and secure user data. 2021-06-16 Overview
SQL Server Optimized Network traffic statistics

The traffic statistics of ApsaraDB RDS for SQL Server instances that run the RDS Basic Edition, RDS High-availability Edition, or RDS Cluster Edition are collected from Windows network adapters. This way, the traffic statistics can reflect the network bandwidth usage more accurately.

After a backup is created for an RDS instance that runs one of the preceding RDS editions, the traffic volume on the Monitoring and Alerts page of the instance in the ApsaraDB RDS console significantly increases within a short period of time.

2021-06-04 View the resource metrics and engine metrics of an ApsaraDB RDS for SQL Server instance
All supported database engines New Alerting system An alerting system can be created for an ApsaraDB RDS instance with a few clicks. This alerting system helps users monitor crucial metrics and identify abnormal metrics at the earliest opportunity. 2021-06-01 Configure an alert rule for an ApsaraDB RDS for MySQL instance
MySQL New Metric A new metric that indicates the number of bytes written to the redo log files of an ApsaraDB RDS for MySQL instance per second is added to the ApsaraDB RDS console. 2021-06-01 View the resource, engine, and deployment metrics of an ApsaraDB RDS for MySQL instance

May 2021

Database engine Category Feature Description Release date References
MariaDB TX New ESSDs ESSDs are supported for ApsaraDB RDS for MariaDB TX instances. 2021-05-27 Create an ApsaraDB RDS for MariaDB TX instance
All supported database engines New Selection of zones for secondary instances The zones of secondary ApsaraDB RDS instances can be selected. 2021-05-27
PostgreSQL New SSL encryption SSL encryption with custom certificates is supported for ApsaraDB RDS instances that run PostgreSQL 10 or later and are equipped with standard SSDs or ESSDs. 2021-05-06 Configure SSL encryption for an ApsaraDB RDS for PostgreSQL instance

April 2021

Database engine Category Feature Description Release date References
SQL Server New SQL Server 2019 EE SQL Server 2019 EE is supported for ApsaraDB RDS. 2021-04-27 Features of ApsaraDB RDS for SQL Server
SQL Server New Metrics Metrics that are used to monitor the IOPS, transactions per second (TPS), and queries per second (QPS) of an ApsaraDB RDS for SQL Server instance can be specified in alert rules. 2021-04-22 Configure an alert rule for an ApsaraDB RDS for SQL Server instance
SQL Server New Snapshot backups Snapshot backups are supported for ApsaraDB RDS for SQL Server instances that are equipped with standard SSDs or ESSDs. 2021-04-06 Enable snapshot backups for an ApsaraDB RDS for SQL Server instance

March 2021

Database engine Category Feature Description Release date References
MySQL New Custom upgrade time The time at which you want to upgrade the database engine version of an ApsaraDB RDS for MySQL instance from MySQL 5.5 to MySQL 5.6 can be customized. 2021-03-26 Upgrade the major engine version of an ApsaraDB RDS for MySQL instance
SQL Server New Display of error logs The error logs of ApsaraDB RDS for SQL Server instances are displayed in the ApsaraDB RDS console. 2021-03-26 View the logs of an ApsaraDB RDS for SQL Server instance
SQL Server Optimized Uppercase letters in database names Uppercase letters are allowed in the names of databases that are created on ApsaraDB RDS for SQL Server instances. 2021-03-23 Create a database on an ApsaraDB RDS for SQL Server instance
PostgreSQL New Single-digit second backups Single-digit second backups are supported for ApsaraDB RDS for PostgreSQL instances. After single-digit second backups are enabled for an RDS instance, ApsaraDB RDS can complete a backup for the RDS instance in 1 second. 2021-03-18 Back up an ApsaraDB RDS for PostgreSQL instance
PostgreSQL Optimized Storage type upgrade The storage types of ApsaraDB RDS for PostgreSQL instances can be upgraded. For example, the storage type of an RDS instance can be upgraded from standard SSDs to ESSDs. 2021-03-18 Change the specifications of an ApsaraDB RDS for PostgreSQL instance
MySQL New Custom password policies The password policies of ApsaraDB RDS instances that run MySQL 5.7 can be customized and modified to increase the password strength. 2021-03-12 Configure custom password policies for an ApsaraDB RDS for MySQL instance
MySQL Optimized Recycle bin The policies based on which ApsaraDB RDS for MySQL instances are moved to the recycle bin are modified. Only the RDS instances that meet the specified conditions are moved to the recycle bin after these instances expire or are released. 2021-03-12 Manage ApsaraDB RDS for MySQL instances in the recycle bin
PostgreSQL New Cross-region backups Cross-region backups are supported for ApsaraDB RDS for PostgreSQL instances. After cross-region backups are enabled for an RDS instance, ApsaraDB RDS can automatically replicate the backup files of the RDS instance to a different region. The cross-region data backup files can be used to monitor and restore the RDS instance. 2021-03-05 Enable cross-region backups for an ApsaraDB RDS for PostgreSQL instance

February 2021

Database engine Category Feature Description Release date References
PostgreSQL New Major engine version upgrade The major engine version of an ApsaraDB RDS for PostgreSQL instance can be upgraded. 2021-02-08 Upgrade the major engine version of an ApsaraDB RDS for PostgreSQL instance