Note：

The strengths described in this document are exclusive to dual-node and three-node TencentDB for MySQL instances.

Cost Effectiveness and Ease of Use

• Read/write separation is supported
  Read-only replicas can be mounted to TencentDB for MySQL. One-source-multiple-replica architecture allows you to respond to massive requests. RO group with load balancing feature is supported to greatly optimize the pressure distribution among read-only replicas.

• Powerful hardware ensures high performance
  NVMe SSD features high IO performance, ensuring smooth reads and writes.
  A maximum of 240,000 QPS and a maximum storage space of 6 TB are supported for an instance.

High Security

• Anti-DDoS protection
  When you suffer a DDoS attack, this feature can help you resist various attack traffic, ensuring the normal operation of businesses.

• Protection against database attacks
  Effectively defense against such database attacks as SQL injection and brute force attacks.

High Reliability

Data is stored online in a source/replica architecture, ensuring high data security. Moreover, backup data can be stored for an extended time period, allowing for data recovery in case of a database disaster.

• Data encryption
  Transparent data encryption (TDE) feature guarantees the security of real-time data and backup data.

• Database audit
  Financial-grade data audit feature helps prevent core data theft, trace non-compliant operations, and locate malicious pulls.

High Availability

• Real-time hot backup
  The dual-server hot backup mechanism supports lossless restoration of data from the last 7–732 days based on data backup and log backup (binlog). Such backups can be retained for 7–732 days.

• Automatic disaster recovery
  Automatic failure detection and automatic failover are supported. Procedures of source/replica switchover and failover are imperceptible to users.

Advantages over Self-built Databases

• Easy management of massive databases
  Databases can be managed via command line or console. Batch database management, permission setting, and SQL import are supported.

• Data import and backup rollback
  Multiple data import methods are provided for initialization. Data is backed up automatically on a daily basis. TencentDB allows data to be rolled back to any point in time within the retention period based on backup files.

• Professional monitoring and alarm
  Multidimensional monitoring and alarming based on custom resource thresholds are supported. You can also download slow query analysis reports and complete SQL running reports.

• A variety of access methods
  Access to the public network and VPC is supported. You can connect TencentDB instances to your IDC, a private cloud, or other computing resources for deployment in a hybrid cloud conveniently.