# 数据库实例类支持的数据库引擎
<a name="Concepts.DBInstanceClass.SupportAurora"></a><a name="instance_classes"></a>

下表显示了 Amazon Aurora 数据库引擎支持的数据库实例类。

**db.serverless – 能够自动扩缩容量的 Aurora Serverless v2 实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.x2g – 由 Amazon Graviton2 处理器提供支持的内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r6gd – 由 Amazon Graviton2 处理器提供支持的优化型读取实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r6id – 优化型读取实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r8g – 由 Amazon Graviton4 处理器提供支持的内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r8gd – 由 Amazon Graviton4 处理器提供支持的优化型读取实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r7g – 由 Amazon Graviton3 处理器提供支持的内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r7i – 内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r6g – 由 Amazon Graviton2 处理器提供支持的内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r6i – 内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r5 – 内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.r4 – 内存优化型实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.t4g - 由 Amazon Graviton2 处理器提供支持的可突增性能实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.t3 – 具爆发能力的实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)

**db.t2 – 具爆发能力的实例类**      
[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html)