TencentDB Database Services

Tencent Cloud offers a comprehensive suite of fully managed database services through the TencentDB family. These services handle provisioning, patching, backups, and high availability.

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TencentDB for MySQL

The most popular database on Tencent Cloud — fully managed MySQL:

Key Features

• High availability — primary/standby architecture across availability zones
• Automatic backups — daily full backups and continuous binlog backups
• Point-in-time recovery — restore to any second within the backup retention period
• Read replicas — up to 5 read replicas for read scaling
• Database Proxy — connection pooling and automatic read/write splitting

Architecture

Zone A                Zone B
┌──────────────┐     ┌──────────────┐
│ Primary      │─sync─│ Standby     │
│ Instance     │      │ Instance    │
└──────┬───────┘     └──────────────┘
       │
  ┌────┴────┐
  │ Read    │ (up to 5)
  │ Replica │
  └─────────┘

Editions

Edition	Description	Use Case
Basic	Single node, no standby	Dev/test, non-critical
High Availability	Primary + standby (cross-AZ)	Production workloads
Finance	1 primary + 2 standbys (3-node)	Financial applications

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TDSQL

TDSQL is Tencent's enterprise-grade distributed database family:

TDSQL for MySQL

• Horizontally scalable MySQL-compatible database
• Automatic sharding across multiple nodes
• Strong consistency with distributed transactions
• Ideal for large-scale transactional workloads

TDSQL-C for MySQL (Serverless)

Cloud-native MySQL with compute-storage separation:

• Serverless — scales compute to zero when idle
• Shared storage — up to 128 TB, pay for what you use
• Fast scaling — add read replicas in seconds
• Up to 15 read replicas

┌──────────┐  ┌──────────┐  ┌──────────┐
│ Writer   │  │ Reader 1 │  │ Reader 2 │
│ Node     │  │ Node     │  │ Node     │
└────┬─────┘  └────┬─────┘  └────┬─────┘
     │             │             │
     └─────────────┼─────────────┘
                   │
         ┌─────────┴─────────┐
         │   Shared Storage  │
         │   (up to 128 TB)  │
         └───────────────────┘

TDSQL-C for PostgreSQL

Cloud-native PostgreSQL with the same architecture as TDSQL-C for MySQL.

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TencentDB for Redis

Fully managed Redis for caching and real-time data:

Architectures

Architecture	Description	Use Case
Standard	Single node	Development, non-critical caching
Master/Replica	Primary + replica (cross-AZ)	Production caching
Cluster	Distributed across multiple shards	Large datasets, high throughput

Key Features