TDSQL-C for MySQL
- Release Notes and Announcements
- Announcements
- Product Introduction
- Suggestions on Usage Specifications
- Kernel Features
- Kernel Version Release Notes
- Optimized Kernel Version
- Functionality Features
- Performance Features
- Security Features
- Stability Feature
- Analysis Engine Features
- Purchase Guide
- Value-Added Services Billing Overview
- Database Audit
- Audit Rule Template
- Serverless Service
- Serverless Introduction
- Serverless Resource Pack
- Configuration Change
- Operation Guide
- Database Connection
- Configuring Network Address
- Instance Management
- Configuration Adjustment
- Instance Mode Management
- Cluster Management
- Scaling Instance
- Database Proxy
- Database Proxy Kernel Features
- Managing Database Proxy
- Automatic Read/Write Separation
- Connection Pool Feature
- Other Features
- Account Management
- Console Account
- Database Account
- Configuring Custom Password Strength
- Database Management
- Database Management Tool
- Columnar Storage Index (CSI)
- Utilization of Columnar Storage Indexes
- Read-Only Analysis Engine
- Feature Limits and Compatibility
- Description of Functions and Operators
- Read-Only Analysis Engine Management
- Data Loading
- Executing Queries
- Exclusive Features
- Performance Optimization
- Performance White Paper
- Parameter Configuration
- Multi-AZ Deployment
- Backup and Restoration
- Performing Backup
- Managing Backup
- Rollback
- Restoring Data from Logical Backups
- Restoring Data Through the Console
- Restoring Data from Snapshot Backup
- Data Migration
- Parallel Query
- Setting Parallel Query
- Database Security and Encryption
- Access and Authorization
- Security Group Management
- TencentDB Security Group Management
- Monitoring and Alarms
- Monitoring
- Alarms
- Monitoring Metric Alarm
- Practical Tutorial
- Data Rollback
- Database/Table-Level Rollback
- Rolling back Entire Cluster
- White Paper
- Security White Paper
- Performance White Paper
- Troubleshooting
- Connection Issues
- API Documentation
- Making API Requests
- Instance APIs
- Account APIs
- Audit APIs
- Database Proxy APIs
- Backup and Restoration APIs
- Parameter Management APIs
- Performance Analysis APIs
- Serverless APIs
- ResourcePackage APIs
- Other APIs
- FAQs
- Service Agreement
- TDSQL-C Policy
- General References
Common Concepts
Last updated: 2024-12-31 16:53:23
This document describes the common concepts of TDSQL-C for MySQL to help you better understand and use it.
Concepts
Tencent Cloud console: Web-based UIs.
Region: A physical IDC. In general, a TDSQL-C for MySQL instance and a CVM instance should be in the same region to achieve the best access performance.
Availability zone (AZ): A physical location with independent power supply and network resources within a region. There are no substantial differences between different AZs in the same region.
Multi-AZ: A physical location created by combining multiple AZs in the same region.
Read-write instance: A TDSQL-C for MySQL database resource in Tencent Cloud. A cluster can have only one read-write instance.
Read-only instance: A computing node that only provides read functionality. When the instance form is provisioned Resource, a cluster can contain 0 - 15 read-only instances, where the total number of read-only instances = the number of preset resource read-only instances + Serverless read-only instances Number + LibraDB read-only analysis engine number; when the instance form is Serverless, a cluster can contain 0 - 15 read-only instances. If a cluster contains 0 read-only instances, the Serverless The cluster architecture is a Single-Node Edition. If a cluster contains non-zero read-only instances, the Serverless cluster architecture is a Cluster Edition.
Read-only analysis engine：It is implemented based on the LibraDB engine and provides services based on read-only instances. It can provide users with new capabilities for massive data processing and efficient real-time complex analysis. Since the read-only analysis engine is a service provided based on read-only instances, the read-only analysis engine instances are also provisioned resource read-only instances.
Billing mode: The billing mode of an instance resource, which can be monthly subscription, pay-as-you-go, or serverless.
Pay-as-you-go: A postpaid billing mode, where you can apply for resources for on-demand use and will be charged based on the actual usage upon settlement.
Monthly subscription: A prepaid billing mode, where you need to pay the fees for one or multiple months or even years based on your need for cloud resources.
Serverless: TDSQL-C for MySQL Serverless adopts Tencent Cloud's proprietary serverless architecture for next-gen cloud-native relational database services. It is billed based on the actual computing and storage resource usage, so you only need to pay for what you use.
Resource Pack：It is a prepaid resource type launched by TDSQL-C for MySQL, which is divided into compute resource pack and storage resource pack.
Instance type: General or dedicated.
Compatible database version: MySQL 5.7 and 8.0 currently.
Instance specification: The specification configuration of a compute instance, such as 2-core 16 GB MEM.
Compute Unit：The computing power configuration specifications of the Serverless service are interval computing power in CCU.
Instance Mode：The form of TDSQL-C for MySQL, one is provisioned resource, which means pre-allocated fixed specifications. Currently, under the cluster of preset resources, you can configure read-only instances of provisioned resource, Serverless read-only instances, and LibraDB read-only analysis engines. The other is Serverless, which pays according to actual usage and can automatically expand and shrink according to business load to achieve maximum utilization of resources and optimal control of costs.
Architecture：The logical organizational structure of the database. When the instance type is provisioned resource, the architecture is a cluster (1 read-write instance, 0-15 read-only instances); when the instance type is Serverless, the architecture is a single-node edition (1 read-write instance). Write instance, which can provide high availability) and cluster edition (1 read-write instance, 0-15 read-only instances).
Project: Used to categorize and manage instance resources.
Tag: A cloud resource management tool that allows you to use different standards to categorize, search for, and aggregate cloud resources with the same attributes.
Maintenance time: To ensure the stability of your TencentDB instance, the backend system performs maintenance operations on the instance during the maintenance window from time to time. We highly recommend you set an acceptable maintenance time for your business instance, usually during off-peak hours, so as to minimize the potential impact on your business.
Security group: Security access control to instances by specifying IP, protocol, and port rules for instance access.
Network: A network made up of several nodes and linkages that connect them. It represents many objects and their interconnections. For performance and security considerations, only VPC network is supported currently.
Private read-write address: The IP and port assigned to a database for both read and write requests within your VPC network.
Private read-only address: The IP and port assigned to a database for read requests only within your VPC network.
Public read-write address: The IP and port that provide public network access and support both read and write requests.
Public read-only address: The IP and port that provide public network access and support read requests only.
Port: A port in a computer, switch, or router.
Database: A set of organized, shared, and centrally managed data that is stored on a computer for a long period.
Database account: A username used to log in to and manage a database.
Character set: A mapping relationship or encoding rule, including a coded character set and character encoding. The code points corresponding to a character set are mapped into binary sequences, so that they can be stored and processed by a computer.
Cloud Virtual Machine (CVM): A scalable computing service provided by Tencent Cloud.
Monitoring: To make it easier for you to view and stay up to date with instance conditions, TDSQL-C for MySQL provides a wide variety of performance monitoring metrics and convenient monitoring features (such as custom view, time comparison, and merged monitoring metrics).
Alarm policy: You can create alarms to stay informed of the status changes of certain metrics. The specific metrics will be monitored for a certain period of time, and alarm notifications will be sent by SMS, email, and phone at specified intervals based on the given threshold.
Recycle bin: A place where terminated instances are stored before elimination. Such instances can be restored.
Backup: Data is stored separately or as a file copy to tackle possible unexpected situations such as file or data loss or corruption.
Automatic backup: Currently, snapshot backup is supported. You can set the backup time for the system to automatically save data.
Manual backup: You can manually create backup files at any time. Manual backup is supported only for full backup.
Database audit: It can record accesses to databases and executions of SQL statements to help you manage risks and improve the database security.
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