This topic describes the release history of PolarDB and provides the corresponding documentation links.

February 2021

Feature Description Release date Documentation
PolarDB for MySQL 5.7 supports statement queue and allows you to instantly add columns From version 5.7.1.0.6, PolarDB for MySQL 5.7 supports statement queue and allows you to instantly add columns. You can instantly add columns to large tables within seconds. The statement queue feature allows you to reduce overheads from possible conflicts of statements. This improves database performance. 2021-02-09

Statement Queue

Speed up data restoration PolarDBclusters are backed up and restored by using multi-threaded parallel processing. PolarDB also uses innovative technologies to improve the efficiency of data restoration. It requires no more than 10 minutes to restore data from a backup set (snapshots) to a new cluster. 2021-02-09 Back up data

January 2021

Feature Description Release date Documentation
Archive Database available for commercial use Archive Database uses X-Engine that provides a high data compression ratio. This helps you reduce storage costs by up to 70%. Archive Database is suitable for services that have low computing requirements but need to store some archived data, such as DingTalk messages. Archive Database is highly compatible with MySQL. The maximum storage capacity of each Archive Database is 200 TB. 2021-01-13 Archive Database
Support the feature of upgrading configurations or adding nodes on a scheduled basis When you upgrade cluster configurations or add nodes, you can perform the upgrades during the off-peak periods in the next 24 hours. The upgrades can cause transient connections. This feature helps you reduce the impact of the transient connections on your services. 2021-01-12 Change configurations
Support for the upgrade of storage plans to increase storage capacity Storage plans can be upgraded to increase storage capacity. If your storage plan isabout to expire or the storage capacity is insufficient, you can renew or upgrade the storage plan. 2021-01-04 View the deducted capacity of a storage plan

December 2020

Feature Description Release date Documentation
Increase in the maximum storage capacity of the nodes of some specifications In PolarDB for MySQL, the maximum storage capacity of 8-core 32 GB nodes is increased to 20 TB. The maximum storage capacity of 16-core 128 GB, 32-core 256 GB, and 64-core 512 GB nodes is increased to 100 TB. 2020-12-24 Billable items
Task progress bar available in the PolarDB console In the upper-right corner of the PolarDB console, you can click the icon icon to view the progress of tasks, such as backup and restoration tasks. 2020-12-03 None
Support for the restoration of databases and tables in PolarDB for MySQL 5.6 The restoration of databases and tables is supported in PolarDB for MySQL 5.6. 2020-12-01 Restore data of specific databases and tables
Support for transparent data encryption (TDE) in PolarDB for MySQL 5.6 The TDE feature is supported in PolarDB for MySQL 5.6. 2020-12-01 Configure TDE

November 2020

Feature Description Release date Documentation
Storage plans can be used to deduct the fees level-1 backups PolarDB storage plans are used to automatically deduct the fees of storage in the cluster. Storage plans can also be used to deduct the fees of the storage that exceeds the free quota for level-1 backups. 2020-05-12 Storage plans can be used to deduct the fees level-1 backups

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, you can specify whether the table names are case-sensitive. 2020-09-21 Purchase a pay-as-you-go 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 Purchase a pay-as-you-go cluster
PolarDB for MySQL 5.7 available for commercial use 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 Purchase a pay-as-you-go cluster
Release of PolarDB for MySQL in the UK (London) region PolarDB for MySQL is available in the UK (London) region. 2020-08-15 Purchase a pay-as-you-go cluster

July 2020

Feature Description Release date Documentation
Adding multiple read-only nodes at a time on the page of changing configurations Multiple read-only nodes can be added to a PolarDB for MySQL cluster at a time when you change the cluster configurations. 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 Purchase a pay-as-you-go cluster
Global read/write splitting available for global database networks (GDNs) The read/write mode can be set to Read and Write (Automatic Read-write Splitting) for all the cluster endpoints in the GDNs 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. 2020-07-01 Create and release a GDN

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 for you to upgrade an existing ApsaraDB RDS for MySQL instance to a PolarDB for MySQL cluster. The original endpoint of the ApsaraDB RDS for MySQL instance is retained. You do not need to modify the configurations and the code of your applications. 2020-06-10 Create a PolarDB for MySQL cluster from an ApsaraDB RDS for MySQL instance

May 2020

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

April 2020

Feature Description Release date Documentation
Release of database services in the Japan (Tokyo) region PolarDB for MySQL is available in the Japan (Tokyo) region. 2020-04-30 Purchase a pay-as-you-go cluster
Release of PolarDB for MySQL in the China (Chengdu) region PolarDB for MySQL is available in the China (Chengdu) region. 2020-04-13 Purchase a pay-as-you-go 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 Purchase a pay-as-you-go cluster
Global consistency PolarDB for MySQL cluster endpoints support global consistency. This ensures that 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 PolarDB for MySQL primary endpoints support Secure Sockets Layer (SSL) encrypted transmission. SSL encrypts network connections at the transport layer. This improves data security and integrity for communication, but increases the network response time. You can enable SSL encryption based on your business requirements. 2020-02-11 Configure SSL encryption
Offload reads from the primary node PolarDB for MySQL supports the offload reads from the primary node feature. SQL query requests are sent to read-only nodes while data consistency is ensured. This reduces the workloads of the primary node and ensures the stable performance of the primary node. 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 in Cloud Monitor. The feature supports more performance metrics. The feature also improves user experience in notifications.

To obtain better user experience in notifications, we recommend that you use the new alert rules.

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 the following items:
  • Diagnostics: This feature provides session management and real-time performance display. You can view diagnosis results in tables and charts.
  • Slow SQL analysis: This feature allows you to view the trends and statistics of slow SQL statements that are recorded in the slow query log. You can also view the 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 Purchase a pay-as-you-go 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 database cluster to other zones. This feature can be used for disaster recovery or to meet the requirement that an Elastic Compute Service (ECS) instance accesses a PolarDB for MySQL cluster from a nearby zone. 2019-11-13 Deploy a cluster across 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 PolarDB clusters: DescribeDBClusterPerformance.
  • PolarDB provides the following API operation that can be used to query the performance data of PolarDB cluster nodes: DescribeDBNodePerformance.
2019-10-21
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 change takes effect in real time and does not affect the proper running of database services. 2019-10-14 -
Failover PolarDB provides the failover feature that is included in the previous planning. You can switch the services of the primary node to a specified read-only node based on your business requirements. 2019-10-14 Switch over services between primary and read-only nodes

September 2019

Feature Description Release date Documentation
PolarDB for MySQL 8.0 available for commercial use PolarDB for MySQL 8.0 supports parallel queries. In the scenario of TPC-H testing, the performance improves by 10 times. You can add fields without locking tables. This reduces the negative impact on service stability in a significant way. PolarDB for MySQL 8.0 optimizes some features of NoSQL databases, provides an easy way to use JSON data types, and adds some advanced SQL features, such as window functions. 2019-09-12 Parallel query
PolarDB available for commercial use PolarDB is available for commercial use in the following nine regions around the world:
  • China (Beijing)
  • China (Zhangjiakou)
  • 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