December 2021

Update	Description	Release Date	Documentation
Supported the 256 MB memory specification for TencentDB for Redis 4.0 and 5.0 Memory Edition (Standard Architecture)	The minimum memory specification of TencentDB for Redis 4.0 and 5.0 Memory Edition (Standard Architecture) instances can be 256 MB. Currently, this is supported only in Shanghai Zone 5, Beijing Zone 6, and Guangzhou Zone 6.	2021-12	Performance

## November 2021

Update	Description	Release Date	Documentation
Default parameter templates are supported	TencentDB for Redis now provides default parameter templates applicable to Redis 2.8 standard architecture, Redis 4.0 standard architecture, Redis 4.0 cluster architecture, Redis 5.0 standard architecture, and Redis 5.0 cluster architecture. You can view them on the parameter template page in the console.	2021-11	Using Parameter Templates
Public network address can be enabled	You can now enable the public network address for a TencentDB for Redis instance in the console, so that this instance can connect to a CVM in a different VPC over the public network.	2021-11	Configuring the Public Network Address

July 2021

Update	Description	Release Date	Document
Supported configuring change data capture (CDC)	You can configure CDC in the console on your own. CDC records the information of all changes in a table and the median values of changed data entries, which help you better track table changes.	2021-07	CDC
Supported configuring change tracking (CT)	You can configure CT in the console on your own. CT records modifications of table rows and allows you to directly get the latest data from the track table.	2021-07	CT
Supported configuring database shrinking	You can directly shrink database in the console to avoid space waste.	2021-07	Shrinking Database
Supported configuring parameters in the console	You can view and directly modify parameters in the console and view parameter modification logs, which make parameter modification easier.	2021-07	Setting Instance Parameter
Launched 11 new system and instance monitoring metrics	4 memory and lock performance counter monitoring metrics and 7 physical machine system monitoring metrics are added for enterprise-grade users to comprehensively monitor database performance.	2021-07	Monitoring

June 2021

Update	Description	Release Date	Document
Launched high-specification instances	Dual-Server High Availability Edition, Cluster Edition, and read-only instances are now available in 64-core 512 GB and 90-core 720 GB specifications, meeting the needs of enterprise-grade users.	2021-06	-
Launched the service in Tokyo Zone 2	TencentDB for SQL Server is now available in Tokyo Zone 2.	2021-06	Regions and AZs

May 2021

Update	Description	Release Date	Document
Launched TencentDB for SQL Server 2019	TencentDB for SQL Server 2019 is officially launched and supports Basic, High Availability, and Cluster Edition instances, which have great improvements in performance, ease of use, high availability, and security.	2021-05	-
Launched the service in Beijing Zone 7	TencentDB for SQL Server is now available in Beijing Zone 7.	2021-05	Regions and AZs

December 2020

Update	Description	Release Date	Document
Supported self-service version and architecture upgrade	You can upgrade the version and architecture and scale instances in the console in a self-service manner to easily adjust instances based on your business needs.	2020-12	Adjusting Instance Specification

November 2020

Update	Description	Release Date	Document
Supported the use of tags	TencentDB for SQL Server supports using tags. You can use tags to mark different resource usages, users, and business scenarios under your account.	2020-11	-
Launched the service in the Chengdu region	TencentDB for SQL Server is now available in the Chengdu region.	2020-11	Regions and AZs

October 2020

Update	Description	Release Date	Document
Supported migration with DTS and optimized cold backup migration	DTS supports data migration from self-built SQL Server databases in IDCs, clouds, and other cloud vendors to TencentDB for SQL Server as well as data migration between TencentDB for SQL Server instances. Cold backup migration restores data from .bak files, which is applicable to data migration from SQL Server databases in other cloud vendors and self-built SQL Server databases to TencentDB for SQL Server. Multiple migration methods deliver an easier and more user-friendly data migration experience.	2020-10	Cold Backup Migration Migration with DTS

July 2020

Update	Description	Release Date	Document
Launched TencentDB for SQL Server Basic (Standalone) Edition	TencentDB for SQL Server Basic Edition is launched, which supports cloud `sysadmin` permissions. It provides a complete set of genuinely licensed database solutions with high availability, security, and performance and light OPS.	2020-07	Architecture

March 2020

Update	Description	Release Date	Document
Supported admin accounts	TencentDB for SQL Server supports admin permissions. An admin has read/write permissions for all databases on the instance and thread management permissions and can automatically discover new databases and get their read/write permissions.	2020-03	-

January 2020

Update	Description	Release Date	Document
Supported Always On clusters	TencentDB for SQL Server 2017 Enterprise Edition instances supports adding read-only instances. The underlying Always On architecture implements the control of cluster capabilities, such as automated data replication, traffic load balancing of read-only instances, and primary/replica switch of primary instances.	2020-01	Architecture

December 2019

Update	Description	Release Date	Document
Supported setting device maintenance time	TencentDB for SQL Server supports setting the maintenance time. To ensure the stability of your TencentDB instance, the backend system performs maintenance operations on the instance during the maintenance time at irregular intervals.	2019-12	Setting Instance Maintenance Information

October 2019

Update	Description	Release Date	Document
Supported configuring security groups	A security group is a stateful virtual firewall capable of filtering. As an important means for network security isolation, it can be used to set network access controls for one or more TencentDB instances.	2019-10	Configuring Security Groups
Supported recycle bin	After a monthly subscribed or pay-as-you-go instance expires or is manually terminated, it can be automatically put in the recycle bin for retention.	2019-10	-

September 2019

Update	Description	Release Date	Document
Supported creating databases with multiple character sets available in the console	TencentDB for SQL Server supports multiple SQL Server character sets provided by Microsoft in the console for your choice when creating databases.	2019-09	Creating Database

July 2019

Update	Description	Release Date	Document
Launched the service in the Seoul region	TencentDB for SQL Server is now available in the Seoul region.	2019-07	Regions and AZs

June 2019

Update	Description	Release Date	Document
Supported pay-as-you-go billing mode	TencentDB for SQL Server supports the pay-as-you-go billing mode. You can select a billing mode based on your business needs.	2019-06	Billing Overview

May 2019

Update	Description	Release Date	Document
Supported instance configuration upgrade	The database instance specification can be upgraded, and the capacity can be expanded.	2019-05	Adjusting Instance Specification

September 2017

Update	Description	Release Date	Document
Launched SQL Server 2016	TencentDB for SQL Server is now available on SQL Server 2016.	2017-09	-

December 2016

Update	Description	Release Date	Document
Supported read-only mode for replica servers	TencentDB for SQL Server supports read-only mode for replica servers. You can select memory and disks as needed to tailor the database specification for your actual business. The read-only mode is implemented through snapshots, facilitating online data analysis. It doesn't increase the costs, affect the primary database performance, or compromise high availability.	2016-12	-

May 2016

Update	Description	Release Date	Document
Supported SQL Server 2012 Enterprise Edition	TencentDB for SQL Server is now available on SQL Server 2012 Enterprise Edition, which is compatible with all features of SQL Server 2008.	2016-05	-

December 2015

Update	Description	Release Date	Document
Launched TencentDB for SQL Server officially	TencentDB for SQL Server is officially launched and provides various features such as instance management, instance details, system monitoring, database management, account management, and backup.	2015-12	Overview