- Release Notes and Announcements
- Release Notes
- Open-Source Plugin Privilege Escalation Has Vulnerability Risk for PostgreSQL
- Announcements
- Security Risk Statement for Creating Partial Plugins in PostgreSQL Cloud Database
- TencentDB for PostgreSQL Will Start Billing for Backup Space
- Some Extensions on Lower Kernel Version Can't Be Created and Upgraded in TencentDB for PostgreSQL
- Announcement on the Risk of Privilege Escalation Vulnerability in Cloud Database PostgreSQL Open Source Plugin
- Product Introduction
- Purchase Guide
- Getting Started
- Kernel Version Introduction
- Operation Guide
- Instance Management
- Upgrading Instance
- Read-Only Instance
- Account Management
- Database Optimization
- Parameter Management
- Log management
- Backup and Restoration
- Extension Management
- Network Management
- Access Management
- Data Encryption
- Security Groups
- Monitoring and Alarms
- Tag
- PostgreSQL for Serverless
- Best Practice
- postgres_fdw Extension for Cross-database Access
- Automatically Creating Partition in PostgreSQL
- Searching in High Numbers of Tags Based on pg_roaringbitmap
- Querying People Nearby with One SQL Statement
- Configuring TencentDB for PostgreSQL as GitLab's External Data Source
- Supporting Tiered Storage Based on cos_fdw Extension
- Implement Read/Write Separation via pgpool
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance APIs
- DescribeDBInstanceHAConfig
- SwitchDBInstancePrimary
- ModifyDBInstanceChargeType
- ModifyDBInstanceHAConfig
- UpgradeDBInstanceKernelVersion
- CreateInstances
- DescribeDBInstanceAttribute
- DescribeDBInstances
- InitDBInstances
- UpgradeDBInstance
- SetAutoRenewFlag
- RestartDBInstance
- RenewInstance
- ModifyDBInstancesProject
- ModifyDBInstanceName
- DestroyDBInstance
- IsolateDBInstances
- DisIsolateDBInstances
- ModifySwitchTimePeriod
- ModifyDBInstanceSpec
- ModifyDBInstanceDeployment
- DescribeEncryptionKeys
- CreateDBInstances
- Read-only Replica APIs
- Backup and Restoration APIs
- DescribeBackupDownloadRestriction
- ModifyBackupDownloadRestriction
- DescribeDBXlogs
- DescribeDBBackups
- ModifyBackupPlan
- DescribeCloneDBInstanceSpec
- DescribeBackupPlans
- DescribeAvailableRecoveryTime
- CloneDBInstance
- ModifyBaseBackupExpireTime
- DescribeLogBackups
- DescribeBaseBackups
- DescribeBackupSummaries
- DescribeBackupOverview
- DescribeBackupDownloadURL
- DeleteLogBackup
- DeleteBaseBackup
- CreateBaseBackup
- Parameter Management APIs
- Network APIs
- Security Group APIs
- Performance Optimization APIs
- Account APIs
- Specification APIs
- PostgreSQL for Serverless APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Glossary
- Contact Us
- Release Notes and Announcements
- Release Notes
- Open-Source Plugin Privilege Escalation Has Vulnerability Risk for PostgreSQL
- Announcements
- Security Risk Statement for Creating Partial Plugins in PostgreSQL Cloud Database
- TencentDB for PostgreSQL Will Start Billing for Backup Space
- Some Extensions on Lower Kernel Version Can't Be Created and Upgraded in TencentDB for PostgreSQL
- Announcement on the Risk of Privilege Escalation Vulnerability in Cloud Database PostgreSQL Open Source Plugin
- Product Introduction
- Purchase Guide
- Getting Started
- Kernel Version Introduction
- Operation Guide
- Instance Management
- Upgrading Instance
- Read-Only Instance
- Account Management
- Database Optimization
- Parameter Management
- Log management
- Backup and Restoration
- Extension Management
- Network Management
- Access Management
- Data Encryption
- Security Groups
- Monitoring and Alarms
- Tag
- PostgreSQL for Serverless
- Best Practice
- postgres_fdw Extension for Cross-database Access
- Automatically Creating Partition in PostgreSQL
- Searching in High Numbers of Tags Based on pg_roaringbitmap
- Querying People Nearby with One SQL Statement
- Configuring TencentDB for PostgreSQL as GitLab's External Data Source
- Supporting Tiered Storage Based on cos_fdw Extension
- Implement Read/Write Separation via pgpool
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance APIs
- DescribeDBInstanceHAConfig
- SwitchDBInstancePrimary
- ModifyDBInstanceChargeType
- ModifyDBInstanceHAConfig
- UpgradeDBInstanceKernelVersion
- CreateInstances
- DescribeDBInstanceAttribute
- DescribeDBInstances
- InitDBInstances
- UpgradeDBInstance
- SetAutoRenewFlag
- RestartDBInstance
- RenewInstance
- ModifyDBInstancesProject
- ModifyDBInstanceName
- DestroyDBInstance
- IsolateDBInstances
- DisIsolateDBInstances
- ModifySwitchTimePeriod
- ModifyDBInstanceSpec
- ModifyDBInstanceDeployment
- DescribeEncryptionKeys
- CreateDBInstances
- Read-only Replica APIs
- Backup and Restoration APIs
- DescribeBackupDownloadRestriction
- ModifyBackupDownloadRestriction
- DescribeDBXlogs
- DescribeDBBackups
- ModifyBackupPlan
- DescribeCloneDBInstanceSpec
- DescribeBackupPlans
- DescribeAvailableRecoveryTime
- CloneDBInstance
- ModifyBaseBackupExpireTime
- DescribeLogBackups
- DescribeBaseBackups
- DescribeBackupSummaries
- DescribeBackupOverview
- DescribeBackupDownloadURL
- DeleteLogBackup
- DeleteBaseBackup
- CreateBaseBackup
- Parameter Management APIs
- Network APIs
- Security Group APIs
- Performance Optimization APIs
- Account APIs
- Specification APIs
- PostgreSQL for Serverless APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Glossary
- Contact Us
A database instance is a standalone database environment that runs in the Tencent Cloud. It can contain multiple databases created by users and can be accessed by using the same tools and applications as those for a standalone database instance.
Instance Types
TencentDB for PostgreSQL supports the following types of instances:
Instance Type | Description | Architecture | Visible in the Instance List | Capability |
Primary instance | An instance that can be read from and written to | High-availability edition | Yes | The primary instance can associate with read-only instances to realize read/write separation. |
Read-only instance | An instance that can only be read from | Single-node read-only | Yes | A read-only instance cannot exist on its own. It must instead be associated with a source instance, with its data only being synced from the source instance. It must also reside in the same region as the source instance. By default, up to seven read-only instances can be created for a primary instance. |
Reference documents
For more information on the creation of the read-only instance and relevant notes, see Read-Only Instance Overview.
For more information on how to create and configure an RO group, see Managing RO Groups.
Note:
When the used capacity of the instance exceeds the purchased capacity, the database instance will be locked and become read-only. You can set alarms for capacity usage.
Supported Instance Specifications
Edition | Version | Specification Type | CPU and Memory | Disk Capacity | Maximum Number of Connections |
Dual-server high-availability edition (one-primary-one-standby) read-only instance | 10, 11, 12, 13, 14,15 | General - local high-performance SSD | 1-core 2 GiB | 10 GB–2000 GB | 2048 |
| | | 2-core 4 GiB | 10 GB–2000 GB | 2048 |
| | | 2-core 6 GiB | 10 GB–2000 GB | 2048 |
| | | 4-core 8 GiB | 10 GB–2000 GB | 2048 |
| | | 4-core 16 GiB | 10 GB–2500 GB | 2048 |
| | | 6-core 24 GiB | 10 GB–3000 GB | 2048 |
| | | 8-core 16 GiB | 10 GB–3000 GB | 2048 |
| | | 8-core 32 GiB | 10 GB–3500 GB | 4000 |
| | | 8-core 48 GiB | 10 GB–4000 GB | 4500 |
| | | 12-core 24 GiB | 1000 GB–4000 GB | 2048 |
| | | 12-core 64 GiB | 1000 GB–4500 GB | 5500 |
| | | 16-core 32 GiB | 1000 GB–4500 GB | 4000 |
| | | 16-core 96 GiB | 1000 GB–5000 GB | 8000 |
| | | 20-core 128 GiB | 1000 GB–5500 GB | 10000 |
| | | 24-core 48 GiB | 1000 GB–6000 GB | 4500 |
| | | 28-core 240 GiB | 1000 GB–6000 GB | 13000 |
| | | 32-core 64 GiB | 1000 GB–6000 GB | 5500 |
| | | 48-core 480 GiB | 1000 GB–6000 GB | 22000 |
Note:
The Shanghai Zone 5, Guangzhou Zone 4, and Guangzhou Zone 6 support larger storage specifications:
20-core 128 GiB, with disk capacity up to 7000 GB.
28-core 240 GiB, with disk capacity up to 8000 GB.
48-core 480 GiB, with disk capacity up to 16000 GB.
Yes
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