- Release Notes
- User Tutorial
- Product Introduction
- Tencent Kernel TXSQL
- Purchase Guide
- Get Started
- Operation Guide
- Best Practice
- Usage Specifications of TencentDB for MySQL
- Configuring Application Automatic Reconnection
- Impact of Modifying MySQL Master Instance Parameters
- Limits on Automatic Conversion from MyISAM to InnoDB
- Creating VPCs for TencentDB for MySQL
- Enhancing Business Load Capacity with TencentDB for MySQL
- Build LAMP Stack for Web Application
- Build Drupal Website
- Call MySQL APIs in Python
- White Paper
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Backup APIs
- Task API
- Security API
- Data Import APIs
- Parameter APIs
- Instance APIs
- DescribeDBInstanceGTID
- CloseWanService
- SwitchForUpgrade
- CreateDBInstanceHour
- DescribeDBInstanceCharset
- ModifyDBInstanceVipVport
- ModifyDBInstanceProject
- IsolateDBInstance
- UpgradeDBInstanceEngineVersion
- DescribeDBInstances
- InitDBInstances
- DescribeDBInstanceRebootTime
- OpenWanService
- UpgradeDBInstance
- ModifyDBInstanceName
- DescribeDBZoneConfig
- RestartDBInstances
- OpenDBInstanceGTID
- DescribeDBSwitchRecords
- DescribeDBInstanceConfig
- ModifyAutoRenewFlag
- ModifyInstanceTag
- DescribeTagsOfInstanceIds
- ModifyTimeWindow
- DescribeTimeWindow
- DeleteTimeWindow
- AddTimeWindow
- OfflineIsolatedInstances
- ReleaseIsolatedDBInstances
- ModifyRoGroupInfo
- DescribeRoGroups
- BalanceRoGroupLoad
- DescribeDBInstanceInfo
- DescribeRoMinScale
- CreateRoInstanceIp
- StopDelayReplication
- StartDelayReplication
- ModifyRoType
- ModifyRoReplicationDelay
- SwitchDBInstanceMasterSlave
- SwitchDrInstanceToMaster
- CreateDeployGroup
- DeleteDeployGroups
- DescribeDeployGroupList
- ModifyNameOrDescByDpId
- Database API
- Account API
- Rollback APIs
- Monitoring APIs
- Log APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Reference
- Glossary
- Contact Us
- Release Notes
- User Tutorial
- Product Introduction
- Tencent Kernel TXSQL
- Purchase Guide
- Get Started
- Operation Guide
- Best Practice
- Usage Specifications of TencentDB for MySQL
- Configuring Application Automatic Reconnection
- Impact of Modifying MySQL Master Instance Parameters
- Limits on Automatic Conversion from MyISAM to InnoDB
- Creating VPCs for TencentDB for MySQL
- Enhancing Business Load Capacity with TencentDB for MySQL
- Build LAMP Stack for Web Application
- Build Drupal Website
- Call MySQL APIs in Python
- White Paper
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Backup APIs
- Task API
- Security API
- Data Import APIs
- Parameter APIs
- Instance APIs
- DescribeDBInstanceGTID
- CloseWanService
- SwitchForUpgrade
- CreateDBInstanceHour
- DescribeDBInstanceCharset
- ModifyDBInstanceVipVport
- ModifyDBInstanceProject
- IsolateDBInstance
- UpgradeDBInstanceEngineVersion
- DescribeDBInstances
- InitDBInstances
- DescribeDBInstanceRebootTime
- OpenWanService
- UpgradeDBInstance
- ModifyDBInstanceName
- DescribeDBZoneConfig
- RestartDBInstances
- OpenDBInstanceGTID
- DescribeDBSwitchRecords
- DescribeDBInstanceConfig
- ModifyAutoRenewFlag
- ModifyInstanceTag
- DescribeTagsOfInstanceIds
- ModifyTimeWindow
- DescribeTimeWindow
- DeleteTimeWindow
- AddTimeWindow
- OfflineIsolatedInstances
- ReleaseIsolatedDBInstances
- ModifyRoGroupInfo
- DescribeRoGroups
- BalanceRoGroupLoad
- DescribeDBInstanceInfo
- DescribeRoMinScale
- CreateRoInstanceIp
- StopDelayReplication
- StartDelayReplication
- ModifyRoType
- ModifyRoReplicationDelay
- SwitchDBInstanceMasterSlave
- SwitchDrInstanceToMaster
- CreateDeployGroup
- DeleteDeployGroups
- DescribeDeployGroupList
- ModifyNameOrDescByDpId
- Database API
- Account API
- Rollback APIs
- Monitoring APIs
- Log APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Reference
- Glossary
- Contact Us
A TencentDB instance is a standalone database environment running in Tencent Cloud. It includes multiple databases created by users and can be accessed using the same tools and applications as those for a standalone database instance.
There are three types of instances available in TencentDB for MySQL:
| Instance Type | Definition | Architecture | Visible in the Instance List | Feature |
|---|---|---|---|---|
| Source instance | An instance that can be read from and written to | Yes | A source instance can mount read-only instances and disaster recovery instances for read/write separation and remote disaster recovery | |
| Read-only instance | An instance that can only be read from | Single-node High IO Edition | Yes | A read-only instance cannot exist on its own. Instead, it must be affiliated to a source instance. Its data comes solely from syncing with the source instance, and it must reside in the same region as the source instance. |
Related Information
- For more information on the creation of and notes on the read-only instance, please see Read-Only Instances.
- For more information on how to create and configure a RO group of read-only instances, please see Creating a RO Group of Read-Only Instances.
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