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

graph TD
  subgraph ZA["Zone A"]
    P["Primary Instance"]
    RR["Read Replica (up to 5)"]
  end
  subgraph ZB["Zone B"]
    S["Standby Instance"]
  end
  P -->|"sync"| S
  P --> RR

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

graph TD
  W["Writer Node"] --> SS["Shared Storage (up to 128 TB)"]
  R1["Reader 1 Node"] --> SS
  R2["Reader 2 Node"] --> SS

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

• Sub-millisecond latency
• Automatic failover
• Data persistence (RDB + AOF)
• Up to 4 TB per cluster instance
• Read replicas for scaling

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TencentDB for MongoDB

Fully managed MongoDB for document workloads: