This topic describes the release history of Apsara PolarDB and provides links to the relevant documentation.

September 2020

Feature Description Release date Documentation
Support for the configuration of time zones and the case sensitivity of table names during cluster creation When you create a PolarDB for MySQL cluster, the case sensitivity of table names can be specified. 2020-09-21 Create a PolarDB for MySQL cluster

August 2020

Feature Description Release date Documentation
Release of PolarDB for MySQL in the Australia (Sydney) and China (Qingdao) regions PolarDB for MySQL is available in the Australia (Sydney) and China (Qingdao) regions. 2020-08-21 Create a PolarDB for MySQL cluster
PolarDB for MySQL 5.7 available for sale PolarDB for MySQL 5.7 is available for commercial use. Users who use PolarDB for MySQL 5.7 during public preview can purchase PolarDB for MySQL 5.7 clusters for their production environments. 2020-08-21 Create a PolarDB for MySQL cluster
Release of PolarDB for MySQL in the UK (London) region PolarDB for MySQL is available in the UK (London) region. 2020-08-15 Create a PolarDB for MySQL cluster

July 2020

Feature Description Release date Documentation
Addition of multiple read-only nodes at a time on the Upgrade/Downgrade page Multiple read-only nodes can be added to a PolarDB for MySQL cluster at a time on the Upgrade/Downgrade page. It takes only about 5 minutes to add multiple read-only nodes at a time. 2020-07-28 Add or remove read-only nodes
PolarDB for MySQL 5.7 available in public preview PolarDB for MySQL 5.7 is available in public preview. 2020-07-28 Create a PolarDB for MySQL cluster
Read/write splitting available for global database networks The read/write mode can be set to Read and Write (Automatic Read-write Splitting) for all the cluster endpoints in the global database network (GDN) of PolarDB for MySQL . Read requests are sent to the on-premises secondary cluster, and write requests are automatically forwarded to the primary cluster in the central region. The central region indicates the region where the primary cluster resides. 2020-07-01 Create a GDN and add a secondary cluster

June 2020

Feature Description Release date Documentation
Switch with endpoints (connection changes not required) The Switch with Endpoints (Connection Changes not Required) option is available when you create a PolarDB for MySQL cluster based on an existing ApsaraDB RDS for MySQL instance. If you select this option, the system automatically interchanges the endpoint of the ApsaraDB RDS for MySQL instance and the endpoint of the PolarDB for MySQL cluster. You do not need to modify the connection configurations and code of your applications. 2020-06-10 Create a PolarDB for MySQL cluster by using the Migration from RDS method

May 2020

Feature Description Release date Documentation
Upgraded backup feature PolarDB provides more advanced configurations and capabilities for the backup feature to meet enterprise-level data backup requirements. This ensures data security. 2020-05-12 Back up data
Backup feature available for sale You are charged for the storage space occupied by backup files and log files. PolarDB provides a limited quota of free storage space. 2020-05-12 Back up data

April 2020

Feature Description Release date Documentation
Database release in the Japan (Tokyo) region PolarDB for MySQL is available in the Japan (Tokyo) region. 2020-04-30 Create a PolarDB for MySQL cluster
Release of PolarDB for MySQL in the China (Chengdu) region PolarDB for MySQL is available in the China (Chengdu) region. 2020-04-13 Create a PolarDB for MySQL cluster

March 2020

Feature Description Release date Documentation
Release of PolarDB for MySQL in the US (Virginia) region PolarDB for MySQL 5.6 and 8.0 are available in the US (Virginia) region. 2020-03-09 Create a PolarDB for MySQL cluster
Global consistency PolarDB for MySQL cluster endpoints support global consistency. The latest data can be retrieved if a replication delay occurs when data is replicated from a primary node to read-only nodes. 2020-03-03

February 2020

Feature Description Release date Documentation
SSL encrypted transmission The primary endpoint of PolarDB for MySQL supports Secure Sockets Layer (SSL) encrypted transmission. SSL encrypts network connections at the transport layer. This improves data security and integrity, but increases the network response time. You can enable SSL encryption based on your business needs. 2020-02-11 Configure SSL encryption
Offload reads from the primary node PolarDB for MySQL supports the Offload Reads from Primary Node feature. SQL query requests are sent to read-only nodes while data consistency is ensured. This reduces the workloads of primary nodes and maintains the stability of primary nodes. 2020-02-07 Modify and delete a cluster endpoint

January 2020

Feature Description Release date Documentation
New alert rules The new alert rule feature (POLARDB MYSQL CLUSTER) is available on Cloud Monitor. This feature allows you to create alert rules based on more performance metrics, which delivers improved user experience in alerting and notifications.

We recommend that you use new alert rules for improved user experience.

2020-01-09 Monitor the performance of clusters and nodes

November 2019

Feature Description Release date Documentation
Support for diagnostics and optimization features in more regions The diagnostics and optimization features of PolarDB for MySQL are available in the US (Silicon Valley) and Germany (Frankfurt) regions.
The diagnostics and optimization features include:
  • Diagnostics: This feature provides session management and real-time monitoring. You can view diagnosis results in charts and tables.
  • Slow SQL analysis: This feature allows you to view the trends and statistics of slow SQL statements. You can also view recommendations about SQL statements and perform diagnostic analysis.
2019-11-19
Release of PolarDB for MySQL in the Malaysia (Kuala Lumpur) region PolarDB for MySQL 5.6 and 8.0 are available in the Malaysia (Kuala Lumpur) region. 2019-11-14 Create a PolarDB for MySQL cluster
Support for data migration across zones PolarDB for MySQL allows you to change the primary zone. You can use this feature to migrate the compute nodes in your PolarDB cluster to other zones. This feature can be used for disaster recovery or to meet the requirement that an ECS instance accesses a PolarDB cluster from a nearby zone. 2019-11-13 Deploy a cluster across multiple zones and change the primary zone

October 2019

Feature Description Release date Documentation
API operations for performance monitoring
  • PolarDB provides the following API operation that can be used to query the performance data of clusters: DescribeDBClusterPerformance.
  • PolarDB provides the following API operation that can be used to query the performance data of cluster nodes: DescribeDBNodePerformance.
2019-10-21
Release of storage packages for the retail cloud CloudTmall Nine types of storage packages are available. These storage packages can be used to store 100 GB to 100 TB data. You can upgrade storage packages at any time based on your business needs.
  • Mainland China: The storage packages can be used by PolarDB clusters that are deployed in all the regions of mainland China. You can use the storage packages to reduce storage fees.
  • Outside mainland China: The storage packages can be used by PolarDB clusters that are deployed in China (Hong Kong) and regions outside China. You can use the storage packages to reduce storage fees.
2019-10-16
Support for the configuration of node failover priorities PolarDB allows you to configure node failover priorities. By default, the priority of each node is 1. You can specify an integer from 1 to 15 as the priority. The configuration takes effect immediately without affecting database services. 2019-10-14 -
Failover PolarDB provides the failover feature. You can switch the services of the primary node to a specified read-only node based on your business needs. 2019-10-14 Switch over services between primary and read-only nodes

September 2019

Feature Description Release date Documentation
Commercial use of PolarDB for MySQL 8.0 PolarDB for MySQL 8.0 supports parallel queries. In the scenario of TPC-H testing, PolarDB for MySQL 8.0 can reduce the query time by 10 times when compared with the previous version. You can add fields without locking tables, which reduces the negative impact on service stability. PolarDB for MySQL 8.0 optimizes the features of NoSQL databases, supports JSON data types, and provides SQL window functions. 2019-09-12 Parallel queries
Commercial use of PolarDB PolarDB is available for commercial use in the following nine regions:
  • China (Beijing)
  • China (Zhangjiakou-Beijing Winter Olympics)
  • China (Hangzhou)
  • China (Shanghai)
  • China (Shenzhen)
  • China (Hohhot)
  • China (Hong Kong)
  • Singapore (Singapore)
  • US (Silicon Valley)
2019-09-05 Overview

August 2019

Feature Description Release date Documentation
Release of PolarDB in the Indonesia (Jakarta) region PolarDB is available in the Indonesia (Jakarta) region. 2019-08-20 Overview