- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Best Practice
- Security White Paper
- Development Guide
- API Documentation
- History
- API Category
- Making API Requests
- Parameter Management APIs
- Monitoring Management APIs
- Backup and Restoration APIs
- Account APIs
- Instance Management APIs
- IsolateHourDBInstance
- ActivateHourDBInstance
- ModifyBackupTime
- OpenDBExtranetAccess
- ModifyDBInstancesProject
- DescribeFlow
- CloseDBExtranetAccess
- DescribeBackupTime
- DescribeDBInstances
- InitDBInstances
- ModifyDBInstanceName
- DescribeInstanceNodeInfo
- DescribeDcnDetail
- DestroyHourDBInstance
- CancelDcnJob
- CreateHourDBInstance
- SwitchDBInstanceHA
- Security Group APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Service Agreements
- General References
- Glossary
- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Best Practice
- Security White Paper
- Development Guide
- API Documentation
- History
- API Category
- Making API Requests
- Parameter Management APIs
- Monitoring Management APIs
- Backup and Restoration APIs
- Account APIs
- Instance Management APIs
- IsolateHourDBInstance
- ActivateHourDBInstance
- ModifyBackupTime
- OpenDBExtranetAccess
- ModifyDBInstancesProject
- DescribeFlow
- CloseDBExtranetAccess
- DescribeBackupTime
- DescribeDBInstances
- InitDBInstances
- ModifyDBInstanceName
- DescribeInstanceNodeInfo
- DescribeDcnDetail
- DestroyHourDBInstance
- CancelDcnJob
- CreateHourDBInstance
- SwitchDBInstanceHA
- Security Group APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Service Agreements
- General References
- Glossary
A database instance is a standalone database environment running in Tencent Cloud. It can contain multiple user-created databases and can be accessed using the same tools and applications as those for a standalone database instance.
There are four types of instances available in TencentDB for MariaDB.
| Instance Type | Definition | Feature |
|---|---|---|
| Master instance | An instance that can be read from and written to | A master instance can mount disaster recovery instances for remote disaster recovery |
| Master instance (dedicated) | A master instance in dedicated cluster database mode | It is a database instance applied for in a dedicated cluster and has all features of a TencentDB master instance |
| Disaster recovery instance | An instance that enables disaster recovery across AZs and regions | A disaster recovery instance is read-only during sync with a master instance. It can actively stop the sync and be promoted to a master instance for read/write access. It must reside in a region different from the master instance |
| Temp instance | A temporary instance generated by rollback | It is used to verify and recovery data after rollback. |
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