Release Notes
Last updated:2026-03-03 14:57:05
February 2026
Update | Description | Release Date | Documentation |
Support for rule-based elasticity | Support for rule-based elasticity was added in the serverless clusters of TDSQL-C for MySQL. By configuring rule-based elastic policies for different periods, you can meet business performance requirements across various time periods. | 2026-02-27 | |
Backup feature update | The backup feature of TDSQL-C for MySQL was updated to continuously enhance backup management and data protection capabilities. The updates are as follows: Added the redolog backup list in the console. Added cross-region backup support for automatic snapshot backups and log backups (binlog and redolog). Added backup frequency settings for automatic snapshot backups (weekly and high-frequency backup). | 2026-02-06 | |
Support for custom kernel minor versions | Custom kernel minor versions can be selected during cluster creation and kernel minor version upgrade in TDSQL-C for MySQL. You can select the version based on your business stage and needs: a stable version after long-term validation, or a new version with new features. | 2026-02-06 | |
Support for backup vault | TDSQL-C for MySQL has released the Backup Vault feature, which supports the creation of independent backup vaults, encryption of backup files within the vault, and a backup vault lock mechanism. This builds an enterprise-grade data security defense for database backups, ensuring the security and compliance of backup data. | 2026-02-02 | |
Database Audit optimization | TDSQL-C for MySQL optimized its Database Audit with the following updates. Added support for retaining the time filter when switching audit instances in the console's audit log query interface. Added support for batch pasting client IP addresses in the console's audit log filter. Introduced a new "Client Port" field to audit logs. Extended the allowed characters for custom COS paths used for audit log shipping to include the underscore ("_"). Included the "Error Code" parameter in rule templates. | 2026-02-02 |
January 2026
Update | Description | Release Date | Documentation |
Analytic cluster feature update | The analytic cluster of TDSQL-C for MySQL added support for automatic mapping and account creation. | 2026-01-27 |
December 2025
Update | Description | Release Date | Documentation |
TXSQL kernel feature update | The kernel version of TDSQL-C for MySQL 5.7 was updated to 2.1.14.001 to improve database performance and stability. | 2025-12-26 | |
TXSQL kernel feature update | The kernel version of TDSQL-C for MySQL 8.0 was updated to 3.1.17.002 to improve database performance and stability. | 2025-12-26 | |
LibraDB kernel version update | A new kernel version 4.2509.1.0 was released for the analysis engine of TDSQL-C for MySQL. This release introduces multiple new engine features and also includes system fixes and optimizations. | 2025-12-24 | |
Database proxy version update | TDSQL-C for MySQL released database proxy versions 1.3.20. | 2025-12-16 | |
Optimization for the cross-AZ deployment feature | TDSQL-C for MySQL optimized the cross-AZ deployment feature starting from December 16, 2025: In scenarios where a cluster failed, if the local switch of a cluster for which the cross-AZ deployment feature was enabled failed and the cluster became unavailable for 90 seconds, the cluster automatically performed a cross-AZ switch. Monitor the cluster operation status promptly. | 2025-12-16 | |
Release of a performance white paper for the compilation-optimized high-performance version | TDSQL-C for MySQL released a performance white paper for the compilation-optimized high-performance version, showcasing performance test data across different specifications in fully cached and large data set scenarios, which helped you understand the performance of the compilation-optimized high-performance version. | 2025-12-11 | |
Release of a new version of the performance white paper | TDSQL-C for MySQL released a new version of the performance white paper, which refreshed the performance test data across different specifications in fully cached and large data set scenarios for MySQL 8.0, providing a more reliable database choice for enterprise-level scenarios with strict performance requirements. | 2025-12-09 | |
Support for rolling configuration adjustment by the database proxy | The TDSQL-C for MySQL database proxy supports the option of rolling upgrade when the switch time for the configuration adjustment is set, and allows setting the switch waiting time. You can set the waiting time according to the actual business situation to achieve a smoother configuration adjustment. | 2025-12-03 |
November 2025
Update | Description | Release Date | Documentation |
LibraDB kernel version update | The new kernel versions 4.2506.2.0 and 2.2410.14.0 were released for the analysis engine of TDSQL-C for MySQL, which support many new kernel features, fixed system issues, and made optimizations. | 2025-11-27 | |
Supported Serverless clusters in a new region | TDSQL-C for MySQL clusters with the instance mode of Serverless are supported in the São Paulo and Bangkok region. | 2025-11-27 |
October 2025
Update | Description | Release Date | Documentation |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version was updated to 3.1.17.001 to improve database performance and stability. | 2025-10-25 | |
LibraDB kernel version update | The new kernel versions 3.2503.7.0 and 2.2410.13.0 were released for the analysis engine of TDSQL-C for MySQL, which support many new kernel features, fixed system issues, and made optimizations. | 2025-10-24 | |
Supported Serverless clusters in a new region | TDSQL-C for MySQL clusters with the instance mode of Serverless are supported in the Frankfurt region. | 2025-10-24 | |
New regions supported by the analysis engine | The regions Hong Kong (China) and Nanjing are supported for the analysis engine of TDSQL-C for MySQL. | 2025-10-22 | |
LibraDB kernel version update | The new kernel version 4.2506.1.0 was released for the analysis engine of TDSQL-C for MySQL, which supported many new kernel features and fixed system issues. | 2025-10-21 | |
LibraDB kernel version update | The new kernel version 3.2503.6.0 was released for the analysis engine of TDSQL-C for MySQL, which supported many new kernel features, fixed system issues, and made optimizations. | 2025-10-10 | |
Supported automatic row-based storage and column-based storage node forwarding policy for the database proxy | The database proxy version 1.4.5 supports configuring request forwarding to read-only or read-write instances when the read-only analysis engine fails. It also supports forwarding SQL requests to the read-only analysis engine based on read weight. | 2025-10-10 | |
Supported viewing slow SQL details through the analysis engine | Viewing slow SQL details and SQL analysis reports for read-only analysis engine instances in the console is supported. | 2025-10-10 | |
Supported cross-region data sources for analysis clusters | For business scenarios of cross-region instance deployment, aggregating data from instances in different regions into a TDSQL-C for MySQL analysis cluster is supported. | 2025-10-10 |
September 2025
Update | Description | Release Date | Documentation |
Supported accessing analysis clusters through DMC | TDSQL-C for MySQL analysis clusters can be accessed through Database Management Center (DMC). | 2025-09-28 | |
Supported Serverless clusters in a new region | TDSQL-C for MySQL clusters with the instance mode of Serverless are supported in the Jakarta region. | 2025-09-28 | |
New regions supported by the analysis engine | The analysis engine of TDSQL-C for MySQL is supported in the Frankfurt region. | 2025-09-22 | |
LibraDB kernel version update | The new kernel versions 3.2503.5.0 and 2.2410.12.0 were released for the analysis engine of TDSQL-C for MySQL, which support many new kernel features and have made system issue fixes and optimizations. | 2025-09-15 | |
Support for custom private network domain names | TDSQL-C for MySQL supports enabling private network domain names for instances and database proxies, allowing for the use of custom private network domain names. Accessing the database through the private network domain name enhances the ability to distinguish the instances connected by applications while also meeting enterprise compliance requirements. | 2025-09-10 | |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version was updated to 3.1.16.003 to improve database performance and stability. | 2025-09-08 | |
Database Proxy Version Release Notes | TDSQL-C for MySQL released database proxy version 1.4.5. | 2025-09-08 |
August 2025
Update | Description | Release Date | Documentation |
LibraDB kernel version update | The new kernel version 2.2410.11.1 was released for the analysis engine of TDSQL-C for MySQL, which supported many new kernel features and fixed and optimized system issues. | 2025-08-28 | |
Support for database audit log shipping to COS | Database audit of TDSQL-C for MySQL supports shipping logs to Cloud Object Storage (COS). COS provides stable, durable, and low-cost storage services. Storing audit logs in COS can meet the need for long-term data storage. | 2025-08-12 | |
New regions supported by the analysis engine | The regions Virginia and São Paulo are supported for the analysis engine of TDSQL-C for MySQL. | 2025-08-05 | |
LibraDB kernel version update | New kernel versions 3.2503.4.0 and 2.2410.10.1 are released for the analysis engine of TDSQL-C for MySQL, which support many new kernel features and have made system issue fixes and optimizations. | 2025-08-05 |
July 2025
Update | Description | Release Date | Documentation |
Database proxy version update | TDSQL-C for MySQL released database proxy version 1.3.19. | 2025-07-18 | |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version was updated to 3.1.16.002 to improve database performance and stability. | 2025-07-09 | |
LibraDB kernel version update | New kernel version 3.2503.1.0 was released for the read-only analysis engine of TDSQL-C for MySQL, which supported many new kernel features. | 2025-07-07 | |
Support for analysis clusters by TDSQL-C for MySQL | The creation of analysis clusters was supported by TDSQL-C for MySQL. Analysis clusters can provide users with more efficient data analysis, query, and aggregation capabilities. Analysis clusters can synchronize database and table data from multiple data sources to a read-only analysis engine instance in real time. Analysis clusters can merge databases and tables from different data sources to achieve data aggregation and querying. Analysis clusters use the LibraDB kernel to provide high-performance complex analysis and query capabilities. | 2025-07-07 |
June 2025
Update | Description | Release Date | Documentation |
New regions supported by the read-only analysis engine. | The regions Singapore and Chengdu (China) were supported for the read-only analysis engine of TDSQL-C for MySQL. | 2025-06-30 | |
Support for rolling upgrade by the database proxy | TDSQL-C for MySQL database proxy supports the selection of rolling upgrade during version upgrade. The rolling upgrade will start new database proxy version nodes. You can set the switch waiting time. When the switch time is reached, old database proxy version nodes will be reclaimed, and existing old connections on old nodes will be disconnected. | 2025-06-27 | |
LibraDB kernel version update | New issue-fixed version 2.2410.8.0 was released for the read-only analysis engine of TDSQL-C for MySQL. | 2025-06-25 | |
LibraDB kernel version update | New kernel version 2.2410.7.0 was released for the read-only analysis engine of TDSQL-C for MySQL, which supported many new kernel features. | 2025-06-20 | |
Database audit optimization | TDSQL-C for MySQL optimized database audit as follows. Optimized the interface display after successfully shipping configuration logs to CKafka. Added PREPARE to the feature string of the parameter field "SQL type" in the rule content when a rule template is created or modified. Optimized the display logic for instance ID search. Fixed the issue where the alarm cannot be triggered after the audit configuration of an UPDATE high-risk event alarm. | 2025-06-09 |
May 2025
Update | Description | Release Date | Documentation |
Support for setting backup download rules | TDSQL-C for MySQL now supports limiting download conditions for backup files. You can set backup download rules based on your actual needs to enhance security and management efficiency. | 2025-05-30 | |
Support for GDN | TDSQL-C for MySQL released the Global Database Network (GDN) feature to help enterprises build a GDN architecture with high availability, low latency, and strong consistency. | 2025-05-29 | |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version was updated to 3.1.16.001 to improve database performance and stability. | 2025-05-23 | |
Database proxy version update | TDSQL-C for MySQL released database proxy version 1.3.17. | 2025-05-13 | |
LibraDB kernel version update | New kernel versions 1.2404.24.0 and 2.2410.6.0 were released for the read-only analysis engine of TDSQL-C for MySQL. | 2025-05-06 |
April 2025
Update | Description | Release Date | Documentation |
Support for configuration adjustment on the read-only analysis engine | TDSQL-C for MySQL read-only analysis engine instance now supports instance configuration changes. | 2025-04-27 | |
Support for multi-node high availability on the read-only analysis engine | TDSQL-C for MySQL read-only analysis engine instance now supports multi-node high availability capabilities. | 2025-04-27 | |
Support for alarm configuration on the read-only analysis engine | TDSQL-C for MySQL read-only analysis engine instance now supports alarm configuration capabilities. | 2025-04-27 | |
LibraDB kernel version update | New kernel versions 1.2404.23.0 and 2.2410.5.0 were released for the read-only analysis engine of TDSQL-C for MySQL. | 2025-04-22 | |
Database audit optimization | TDSQL-C for MySQL optimized database audit as follows. Added generation progress display in the audit log file list. Added the options of "All fields" and "Interaction with custom list fields (including field order and content)" when an audit log file was created. Added PREPARE to the SQL type. Optimized source IP display for SaaS operations (DTS, DBbrain, and DMC). Optimized the display of error codes, transaction IDs, and table names. Added support description for the version of audit log fields. Optimized the timeout situation for the fuzzy query and wildcard query scenarios. | 2025-04-09 | |
Support for AZ migration | TDSQL-C for MySQL released the AZ migration feature. When the business area of a cluster needs to be migrated, the migration can be quickly achieved through AZ migration. | 2025-04-03 | |
Supporting shipping database audit logs to CKafka | TDSQL-C for MySQL database audit supports log shipping to the TDMQ for CKafka. The database audit logs of instances can be collected and shipped to the TDMQ for CKafka console for real-time stream computing. | 2025-04-01 | |
Supporting shipping database audit logs to CLS | TDSQL-C for MySQL database audit supports log shipping to CLS. The database audit logs of instances can be collected and shipped to the CLS for aggregation management and analysis. | 2025-04-01 |
March 2025
Update | Description | Release Date | Documentation |
LibraDB kernel version update | New issue-fixed versions 1.2404.22.1 and 2.2410.4.1 are released for the read-only analysis engine of TDSQL-C for MySQL. | 2025-03-25 | |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version is updated to 3.1.15.006 to improve database performance and stability. | 2025-03-21 | |
LibraDB kernel version update | New issue-fixed versions 1.2404.22.0 and 2.2410.4.0 are released for the read-only analysis engine of TDSQL-C for MySQL. | 2025-03-15 | |
Database proxy version update | TDSQL-C for MySQL releases database proxy version 1.4.4. | 2025-03-14 | |
Database proxy version update | TDSQL-C for MySQL releases database proxy version 1.3.16. | 2025-03-06 |
February 2025
Update | Description | Release Date | Documentation |
TXSQL kernel feature updates | TDSQL-C for MySQL 5.7 kernel version has been updated to 2.1.13.002 to improve database performance and stability: The secondary cache feature is supported. | 2025-02-26 | |
TXSQL kernel feature update | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.15.005 to improve database performance and stability: Two binlog subscription modes are supported on read-only instances: Based on file_name and pos Based on timestamp | 2025-02-26 | |
New regions supported by general nodes | The regions Hong Kong (China) and Virginia are supported for general compute nodes of TDSQL-C for MySQL. | 2025-02-20 | |
LibraDB kernel version update | A new bug-fixed version 1.2404.21.0 is released for the "read-only analysis engine" of TDSQL-C for MySQL. All new user instances will be shipped with this version by default. | 2025-02-12 | |
LibraDB kernel version update | A new bug-fixed version 2.2410.1.0 is released for the "read-only analysis engine" of TDSQL-C for MySQL, which supports many new kernel features. This version is currently under Beta test. To apply for a trial, submit a ticket. | 2025-02-05 |
January 2025
Update | Description | Release Date | Documentation |
LibraDB kernel version update | A new bug-fixed version 1.2404.20.0 is released for the "read-only analysis engine" of TDSQL-C for MySQL. All new user instances will be shipped with this version by default. | 2025-01-17 | |
Support for the read-only analysis engine by the database proxy | The "read-only analysis engine" is supported for the database proxy. The supported database proxy version is 1.3.15. | 2025-01-09 | |
Support for monitoring the read-only analysis engine | Viewing the monitoring information on the "read-only analysis engine" in the console is supported. | 2025-01-09 | Analysis Engine Monitoring |
Support for modifying read-only analysis engine parameters | Adjusting parameters of the "read-only analysis engine" in the console is supported. | 2025-01-09 | |
Support for searching and filtering of loaded objects | Objects can be filtered by database name and loading status in the console. Objects loaded to the "read-only analysis engine" can be searched. The two capabilities improve the user experience in scenarios with many databases and tables. | 2025-01-09 |
December 2024
Update | Description | Release Date | Documentation |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" kernel version has released a new bug-fixed version 1.2404.19.1. All new instances will be shipped using this version by default. | 2024-12-28 | |
Database proxy version updates | TDSQL-C for MySQL releases database proxy version 1.3.15. | 2024-12-19 | |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" kernel version has been updated to 1.2404.19.0. Many kernel issues have been fixed in the new version, and surrounding ecological components have been adapted. Supports the adaptation of "database proxy", and can access the "Read-Only Analysis Engine" through the database proxy. Supports adaptation of DMC, which allows access to the "Read-Only Analysis Engine" through DMC. Facilitates the query and use of data in the Read-Only Analysis Engine. For more bug fixes and system optimizations, please refer to related documents. | 2024-12-19 | |
Provisioned Resource clusters support adding Serverless read-only instances | TDSQL-C for MySQL supports adding Serverless read-only instances in Provisioned Resource clusters to achieve hybrid deployment under the cluster (a cluster can adding provisioned resource read-only instances and Serverless read-only instances at the same time), and also supports converting the provisioned resource read-only instances under the cluster into Serverless read-only instances. | 2024-12-10 | - |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" kernel version has been updated to 1.2404.17.0. In the new version, new functions are supported and system optimizations are performed, such as: Supported FROM_UNIXTIME and UNIX_TIMESTAMP functions. Optimized the system table query permission prompt when database client tools such as DBearer access the read-only analysis engine. | 2024-12-03 |
November 2024
Update | Description | Release Date | Documentation |
Supporting serverless cost estimator | TDSQL-C for MySQL supports the Serverless Cost Estimator to help you better understand the costs of using Serverless services. | 2024-11-28 | |
Supporting transparent data encryption (TDE) | TDSQL-C for MySQL supports the Transparent Data Encryption (TDE) feature. Transparent encryption means that data encryption and decryption operations are transparent to users. Real-time I/O encryption and decryption are supported for data files. Data is encrypted before being written to disk and decrypted when memory is read from disk, which can meet compliance requirements for static data encryption. | 2024-11-26 | |
Supporting serverless fixed specifications | The upper and lower limits of compute unit configuration for Serverless clusters can be set to the same compute unit. | 2024-11-25 | |
TXSQL kernel feature updates | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.15.004 to improve database performance and stability: The query cache feature is added. | 2024-11-25 | |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" has released Issue Fixing Version 1.2404.15.2. | 2024-11-13 | |
Releasing four-digit minor version numbers | TDSQL-C for MySQL database kernel minor version now supports four-digit minor version numbers, which can prevent passive upgrades and ensure stable operation of instances during version updates. | 2024-11-08 | |
Database proxy version updates | TDSQL-C for MySQL releases database proxy version 1.3.14. | 2024-11-08 |
October 2024
Update | Description | Release Date | Documentation |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" kernel version has been updated to 1.2404.15.1, which mainly optimizes the system and fixes issues. The default parameter values for the database log retention size have been optimized. The Read-Only Analysis Engine feature Lazy Materialization is enabled by default. Tables starting with the "_" symbol can be loaded into the Read-Only Analysis Engine. The restart efficiency of the Read-Only Analysis Engine has been optimized. | 2024-10-30 | |
TXSQL kernel feature updates | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.15.003 to improve database performance and stability: The wake-up of Serverless instances is accelerated. | 2024-10-29 | |
TXSQL kernel feature updates | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.15.002 to improve database performance and stability: TDE is supported. The secondary cache feature is supported. | 2024-10-26 | |
TXSQL kernel feature updates | TDSQL-C for MySQL 5.7 kernel version has been updated to 2.1.13.001 to improve database performance and stability: The Recycle Bin feature is supported. The Flashback Query feature is supported. The Returning feature is supported. The Nonblocking DDL feature is supported. The Parallel Copy DDL feature is supported. | 2024-10-12 | |
TXSQL kernel feature updates | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.15.001 to improve database performance and stability. | 2024-10-10 |
September 2024
Update | Description | Release Date | Documentation |
LibraDB kernel version updates | TDSQL-C for MySQL "Read-Only Analysis Engine" kernel version has been updated to 1.2404.10.0, which mainly optimizes product experience and stability. The date_sub function is supported. Manual table statistics collection by users is supported. For details, see Statistics Collection. Synchronous loading of data is supported for enum in special scenarios. Many experience features such as system default parameters and backend behavior are optimized. | 2024-9-28 |
August 2024
Update | Description | Release Date | Documentation |
Supported SSL encryption | TDSQL-C for MySQL supports SSL encryption, establishing a secure encrypted transfer channel between the client and the TencentDB server to realize encrypted data transfer, prevent data from being intercepted and tampered with during the transfer, and ultimately ensure the data security for both the client and the server. | 2024-08-01 | |
Read-only analysis engine instances in beta test | TDSQL-C for MySQL supports adding read-only analysis engine instances to the beta test. It offers significant performance enhancements for complex SQL queries, big data computations, multiple-table JOINs, and other scenarios. It is widely applicable to typical scenarios such as slow query, batch data processing, and reconciliation queries. | 2024-08-01 |
June 2024
Update | Description | Release Date | Documentation |
Supported rapid database/table-level rollback | TDSQL-C for MySQL supported the feature of database/table-level rollback to a new cluster, significantly improving the rollback speed for instances with large data volumes. | 2024-06-28 | |
Updated database proxy version | TDSQL-C for MySQL released the database proxy version 1.3.12. | 2024-06-14 |
May 2024
Update | Description | Release Date | Documentation |
Updated TXSQL kernel features | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.14, enhancing database performance and stability: Supported Columnar Storage Index (CSI) (in regional grayscale release). Supported enhanced parallel query features: parallel subqueries, rollup, Nested-Loop Join (NLJ) inner table parallelism, and in-mem hash join parallelism. | 2024-05-20 | |
Optimized database audit | TDSQL-C for MySQL has implemented the following optimizations for database audit: Optimized the audit log page's query time bar, adding quick query time. Added the field Transaction ID to audit logs. Optimized the audit console interface. | 2024-05-16 | |
Supported binding multiple resource packages for serverless clusters | TDSQL-C for MySQL serverless clusters support binding multiple resource packages, facilitating automatic consumption from the second bound package upon depletion of the first, and also support adjusting the consumption priority order. | 2024-05-10 |
April 2024
Update | Description | Release Date | Documentation |
Updated TXSQL kernel features | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.13, enhancing database performance and stability: Optimized the issue of slow data access due to low cyclic efficiency in full table scan. Optimized the issue of decreased large query scan performance in concurrent scenarios. | 2024-04-12 | |
Supported selecting binlog replication method for multi-AZ deployment | TDSQL-C for MySQL supports selecting the primary-replica binlog replication method for multi-AZ deployment. The default is async replication, with options of async replication, semi-sync replication, and strong sync replication. | 2024-04-11 | |
Optimized minor kernel version upgrade | TDSQL-C for MySQL optimizes the operation of minor kernel version upgrades, supporting setting a version upgrade deadline. Before the deadline, if actions that trigger cluster migration occur, the system will not upgrade your cluster to the latest minor kernel version. Manual upgrade operations are also supported if an upgrade is required before the deadline. | 2024-04-10 | |
Optimized configuration adjustment | TDSQL-C for MySQL optimizes the configuration adjustment page. If a cluster with pre-configured resources has been enabled with a database proxy, you can decide whether to adjust the configuration of the database proxy in the configuration adjustment page. This allows you to consider whether the configuration of the database proxy node meets the business workload when adjusting the compute configuration of the cluster. | 2024-04-09 |
March 2024
Update | Description | Release Date | Documentation |
Supported multi-AZ deployment for serverless clusters | TDSQL-C for MySQL serverless clusters support multi-AZ deployment. Compared to single-AZ deployment, it provides higher disaster recovery capabilities and better database protection. | 2024-03-21 |
January 2024
Update | Description | Release Date | Documentation |
Updated TXSQL kernel features | TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.12, enhancing database performance and stability: Supported viewing storage-layer network I/O traffic, time spent, frequency, and latency of transaction commits in slow logs. Database audit supports adding the transaction ID field and table name. Supported black hole engine. Supported the default algorithm used by DDL executions (inplace/instant). Optimized large transaction commit binlog. Optimized binlog write. Optimized the performance of purge binlog. Optimized the parallel DDL feature. | 2024-01-26 | |
Updated TXSQL kernel features | TDSQL-C for MySQL 5.7 kernel version has been updated to 2.1.12, enhancing database performance and stability: Read-only instances support binlog subscription via a position point. Optimized the performance of purge binlog. | 2024-01-26 | |
Updated TXSQL kernel features | TDSQL-C for MySQL 5.7 kernel version has been updated to 2.1.11, enhancing database performance and stability: Supported multi-threaded logical backup. Database proxy supportsTransaction Split Feature. | 2024-01-26 | |
Supported compiling optimized high-performance versions for TXSQL | TDSQL-C for MySQL kernel versions 5.7 2.1.11 and 8.0 3.1.12 support compiling optimized high-performance versions. Without altering the database kernel's business logic code, utilizing compiler optimization techniques enhances kernel performance by 100%, while feature loss decreases. This version is currently in grayscale release. If you want to experience it, submit a ticket to upgrade. | 2024-01-02 |
December 2023
Update | Description | Release Date | Documentation |
Upgrade of distributed shared storage architecture | The distributed shared storage architecture of TDSQL-C MySQL has undergone the following optimization upgrades. Optimized the key pathways such as log transmission, persistence, data page replay, and redundant page cleanup. Enhanced the efficiency of redo replay/merge, reduced additional performance loss and resource contention. This significantly improved the stability of the storage layer, reducing access latency by more than 30% and decreasing network jitter spikes by over 100%. The optimization of the backup rollback module has resolved the issue of unstable rates in exceptional scenarios of snapshot backup and logical backup, thereby further enhancing the efficiency of parallel rollbacks. | 2023-12-29 | - |
November 2023
Update | Description | Release Date | Documentation |
Supported Cloud Log Service (CLS) | TDSQL-C MySQL supports the collection of slow log data from instances, and the shipping of it to CLS for analysis. This provides a comprehensive log service from log collection and storage to log search, facilitating swift monitoring and pinpointing of business issues. | 2023-11-20 | Log Service CLS |
October 2023
Update | Description | Release Date | Documentation |
Supported Column Store Index (CSI) | TDSQL-C MySQL supports the CSI column storage index feature, a technology that utilizes columnar data format for the storage, retrieval, and management of data. This provides superior query performance and a higher data compression ratio. | 2023-10-30 |
September 2023
Update | Description | Release Date | Documentation |
Database audit optimization | TDSQL-C MySQL has implemented the following optimizations for database auditing. Supports binding multiple rule templates to an instance. The relationship between the rule template and the instance has been adjusted from initialization to strong binding, meaning that modifications to the content of the rule template will synchronously affect the audit rules applied by the instances that have bound this rule template. Supports viewing the rule templates bound to each instance, the audit rules hit by each audit log, and the instances associated with each rule template. Integrates with the Event Bus and Tencent Cloud Observability Platform. Supports high, medium, and low risk event alarms. The procedures for rule audit, setting risk levels, and alarm strategies, as well as post-event alarms, needs the submission of a ticket for application. | 2023-09-25 | |
Supported cross-region backup | TDSQL-C MySQL supports cross-regional backup feature, ensuring high availability for database recovery, meeting data availability and security requirements, remote backup recovery, remote disaster recovery, long-term data archiving, and regulatory compliance. | 2023-09-21 | Cross-regional backup |
August 2023
Update | Description | Release Date | Documentation |
Updated TXSQL kernel features | TXSQL kernel features are updated to enhance database performance and stability. TDSQL-C for MySQL 5.7 kernel version is updated to 2.1.10, which supports binlog subscription for read-only instances, blackhole engine, and buffer pool resizing. | 2023-08-25 | |
Updated TXSQL kernel features | TXSQL kernel features are updated to enhance database performance and stability. TDSQL-C for MySQL 8.0 kernel version has been updated to 3.1.10, and TDSQL-C for MySQL 5.7 kernel version has been updated to v.2.1.9. Both kernel versions now support automatic killing of idle transactions, dynamic thread pool, NOWAIT syntax, and invisible index. Kernel 3.1.10 additionally supports the following new features: flashback query, optimization of plan caching point query, statement outline, binlog subscription for read-only instances, blackhole engine, and improved parallel query. Kernel 2.1.9 additionally supports the following new features: returning, auto-increment column persistence, computation pushdown, buffer pool initialization, and hotspot update protection. | 2023-08-22 | |
Supported mounting read-only instances for serverless clusters | Serverless clusters support mounting read-only instances, allowing separate configuration of compute unit range for read-only instances. They also support automatic start and stop of read-only instances, which enhances read performance and concurrency while reducing the load on the read-write instance. | 2023-08-18 | |
Optimized database audit | TDSQL-C for MySQL has optimized the audit log page and added multiple search modes, including Include/Exclude, OR/AND, and Segment/Wildcard`. | 2023-08-09 |
July 2023
Update | Description | Release Date | Documentation |
Optimized database audit | TDSQL-C for MySQL has optimized the audit log page and added multiple search modes, such as fuzzy/exact/forward/reverse/simple/complex search. The units of the audit log fields Execution Time and CPU Time in the console and downloaded audit log files are all adjusted to microseconds. | 2023-07-12 |
May 2023
Update | Description | Release Date | Documentation |
Launched serverless resource pack | TDSQL-C for MySQL has launched prepaid serverless resource pack. By purchasing a resource pack, you can reserve resources in advance. Compared to the pay-as-you-go option, the resource packs can help you save more costs. It is more cost-effective to purchase larger capacity. | 2023-05-31 | |
Launched a new version of database proxy | TDSQL-C for MySQL has released a new version of database proxy. It provides powerful features such as automatic read/write separation, transaction split, and connection pool. It also supports enabling multiple database proxy access addresses (custom routing) to meet the requirements in different business scenarios. | 2023-05-10 |
March 2023
Update | Description | Release Date | Documentation |
Supported instance-level independent IP address | You can set an independent network IP address for the TDSQL-C for MySQL read-write instance or any read-only instance in the cluster, and access the specified instance in the cluster via the corresponding address. Meanwhile, new clusters and existing clusters with only read-write instances no longer support the address connection for read-only groups. | 2023-03-13 |
January 2023
Update | Description | Release Date | Documentation |
Supported the tab view in the console | The TDSQL-C for MySQL console supports the tab and list views. You can switch the view in the cluster list as needed to query and browse cluster information more clearly. | 2023-01-05 |
December 2022
Update | Description | Release Date | Documentation |
Supported global and session parameter settings | TDSQL-C for MySQL provides the Global Parameters field to help you quickly distinguish between global and session parameters. Once configured, values of global parameters will take effect for all instances in the cluster, while values of session parameters will only apply to the target instance and can be synced to other instances. | 2022-12-16 | |
Supported formula-based parameter settings and optimized the parameter template | TDSQL-C for MySQL offers more parameter configuration methods and supports default or custom formula-based parameter values to better adapt to your database. You can save parameter settings as a template to import and export parameters, which facilitates the batch management of database clusters. | 2022-12-16 | |
Launched the new audit service | TDSQL-C for MySQL has launched a new audit service that supports both full and rule-based audit. The service can protect your data from tampering and ensure its integrity and reliability during collection, transfer, and storage. | 2022-12-15 |
October 2022
Update | Description | Release Date | Documentation |
Supported parallel query | TDSQL-C for MySQL supports parallel query, which schedules and leverages multiple compute resources to greatly shorten the response time of large queries. | 2022-10-24 |
September 2022
Update | Description | Release Date | Documentation |
Supported infrequent access storage for audit | Tencent Cloud provides the infrequent access storage option for TDSQL-C for MySQL audit. You can select a suitable storage type based on your actual storage frequency to reduce audit costs. | 2022-09-30 |
August 2022
Update | Description | Release Date | Documentation |
Supported custom password strength | TDSQL-C for MySQL supports the custom password strength feature to protect the database security and meet your needs for compliance with applicable regulations. | 2022-08-22 | |
Optimized the monitoring and alarming feature | TDSQL-C for MySQL adds new monitoring metrics, optimizes metric names, parameters, units, collection/calculation/aggregation methods, the entry to the monitoring feature, and the monitoring page, and is connected to the alarming feature of EventBridge. This improves the system stability and Ops efficiency and reduces the Ops costs, helping you easily stay up to date with the overall database resource usage and status. | 2022-08-05 |
July 2022
Update | Description | Release Date | Documentation |
Supported database proxy | TDSQL-C for MySQL supports database proxy between TencentDB services and user applications. With this feature, all database access requests from the applications are proxied, with writes and reads relayed separately to the source and replica databases to relieve the source database. | 2022-07-11 |
May 2022
Update | Description | Release Date | Documentation |
Supported querying and downloading slow query log | TDSQL-C for MySQL supports slow log details query and download. You can download log files in CSV format or native format (supported by open-source analysis tools) to identify and optimize inefficient SQL statements and thus improve the efficiency and performance. | 2022-05-31 | |
Optimized the backup management feature | TDSQL-C for MySQL optimizes the backup management feature. It supports logical backup and snapshot backup, manual backup download and deletion, and backup retention period customization. This improves the integrity of the data backup and rollback features. | 2022-05-30 |
March 2022
Update | Description | Release Date | Documentation |
Released TDSQL-C for MySQL performance test reports | TDSQL-C for MySQL performance test reports are released. The tests compare TDSQL-C for MySQL and TencentDB for MySQL in write, read, and read-write scenarios. Test results show that TDSQL-C for MySQL performs better. | 2022-03-28 |
February 2022
Update | Description | Release Date | Documentation |
Updated the kernel minor version of TDSQL-C for MySQL 5.7 | 2.0.15: Supported extended tablespace and added new JSON functions: JSON_MERGE_PRESERVE, JSON_MERGE_PATCH, JSON_PRETTY, JSON_STORAGE_SIZE, JSON_ARRAYAGG, JSON_OBJECTAGG. 2.0.16: Optimized undo space truncate to improve the speed of undo truncate on large-spec instances, and optimized the performance of large range queries on read-only instances. | 2022-02 |
January 2022
Update | Description | Release Date | Documentation |
Supported read-only instance expansion in TDSQL-C for MySQL 8.0 | After the kernel version of TDSQL-C for MySQL 8.0 is upgraded to 3.1.2, it supports read-only instance expansion, which significantly improves the read performance scalability of database clusters. | 2022-01 |
November 2021
Update | Description | Release Date | Documentation |
Supported multi-AZ deployment | The engine of TDSQL-C for MySQL supports creating a cluster deployed across AZs. Compared with a single-AZ cluster, a multi-AZ one has better disaster recovery capabilities and can protect your database from being affected by database instance failures, AZ outages, and even IDC-level failures. | 2021-11 |
October 2021
Update | Description | Release Date | Documentation |
Supported data subscription | DTS supports the migration of various relational databases including TDSQL-C for MySQL as well as NoSQL databases. You can use data subscription to meet your requirements for commercial data mining and async business decoupling. | 2021-10 | |
Supported automatic fragmented space reclaim | TDSQL-C for MySQL can automatically reclaim fragmented space after data deletion, which reduces the storage costs. | 2021-10 | - |
September 2021
Update | Description | Release Date | Documentation |
Supported MySQL 8.0 | The engine kernel of TDSQL-C for MySQL now supports MySQL 8.0. Combined with a complete set of management services and proprietary kernel features, it provides more stable and faster cloud native database services that are easier to deploy in more industries and help upgrade your business. Currently, this version doesn't support adding read-only instances. | 2021-09 | - |
Supported instant DDL | TDSQL-C for MySQL supports the instant DDL feature to quickly modify columns in big tables while avoiding data replication. This feature can implement changes in seconds without replicating data or using disk capacity or I/O during peak hours. | 2021-09 |
August 2021
Update | Description | Release Date | Documentation |
Displayed project group information in the TDSQL-C for MySQL audit bills | Exported bills display the project group information of database instances for you to categorize bills and collect statistics by project group. | 2021-08 | |
Displayed the instance name in TDSQL-C for MySQL audit | The original “Instance ID” column in the instance list is changed to “Instance ID/Name” to add the instance name for locating instances more quickly. | 2021-08 | - |
Supported seven days as the log retention period in TDSQL-C for MySQL audit | When audit is newly enabled, you can set the log retention period to seven days. This is suitable for scenarios where you want to observe execution conditions and analyze discovered database problems for a short time. For instances with audit already enabled, you can also change the log retention period to seven days. | 2021-08 | |
Optimized search in TDSQL-C for MySQL audit | Fuzzy search is supported, multiple SQL types can be used together for filtering, and the 24-hour limit on the search time period is removed. | 2021-08 |
June 2021
Update | Description | Release Date | Documentation |
Supported monthly subscription for storage billing | The monthly subscription (prepaid) billing mode is supported for storage. If you have a monthly-subscribed compute node in
Provisioned Resource mode, you can select monthly subscription for storage. | 2021-06 | |
Improved serverless compute specifications | In serverless billing mode, the elastic computing power can be configured to up to 16 cores. | 2021-06 |
May 2021
Update | Description | Release Date | Documentation |
Supported database audit | TDSQL-C for MySQL supports database audit to log the fine-grained audit results of database operations and manage operation compliance. This feature helps you get a whole picture of all database SQL operations. It also provides detailed backtracking data of database operations and enables convenient accountability for database security incidents. | 2021-05 |
March 2021
Update | Description | Release Date | Documentation |
Supported database and table-level rollback | TDSQL-C can roll back databases/tables to the original cluster and roll back an entire cluster (clone) to a new cluster. You can choose different rollback methods according to your business needs. | 2021-03 |
December 2020
Update | Description | Release Date | Documentation |
Supported the change from pay-as-you-go to serverless billing | The billing mode of TDSQL-C for MySQL can be changed from pay-as-you-go to serverless. TDSQL-C for MySQL implements the change by converting the cluster type on the backend. After the change, the bills and details will change, while the payment mode will still be pay-as-you-go. | 2020-12 | Change from Pay-as-You-Go to Serverless Billing |
Supported the change from pay-as-you-go to monthly subscription | The billing mode of TDSQL-C for MySQL can be changed from pay-as-you-go to monthly subscription. TDSQL-C for MySQL implements the change by generating renewal orders, so you need to make the corresponding payment promptly to ensure that the billing mode change is successful. | 2020-12 | |
Renamed TencentDB for CynosDB | TencentDB for CynosDB was renamed TDSQL-C on December 24, 2020. | 2020-12 | |
Launched serverless service | TencentDB for CynosDB Serverless Edition adopts the serverless architecture for cloud native database services. It is billed based on the actual computing and storage resource usage, so you only need to pay for what you use while enjoying the cloud native technologies of Tencent Cloud. | 2020-12 |
July 2020
Update | Description | Release Date | Documentation |
Supported adding read-only instances | TencentDB for CynosDB allows you to create one or more read-only instances in a cluster, which are suitable for read/write separation and one-write-multiple-read application scenarios and capable of greatly enhancing the read load capacity of your database cluster. | 2020-07 | |
Supported migrating data with DTS | TencentDB for CynosDB supports migrating data from MySQL 5.7 to CynosDB for MySQL through DTS. | 2020-07 |
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