如果您在设置数据库代理终端时，读写分离权重分配选择了系统分配，您可以查看本文内容，了解RDS PostgreSQL各规格实例的默认权重分配规则。
主实例
| 规格代码 | CPU和内存 | 权重 |
|---|---|---|
| pg.n2.small.1 | 1核 2GB | 100 |
| pg.n2.medium.1 | 2核 4GB | 200 |
| pg.n4.medium.1 | 2核 8GB | 200 |
| pg.x2.medium.2c | 2核 4GB | 200 |
| pg.x4.medium.2c | 2核 8GB | 200 |
| pg.x4t.medium.2c | 2核 8GB | 200 |
| pg.x8.medium.2c | 2核 16GB | 200 |
| pg.x8t.medium.2c | 2核 16GB | 200 |
| pg.n2.large.1 | 4核 8GB | 400 |
| pg.n4.large.1 | 4核 16GB | 400 |
| pg.x2.large.2c | 4核 8GB | 400 |
| pg.x2t.large.2c | 4核 8GB | 400 |
| pg.x4.large.2c | 4核 16GB | 400 |
| pg.x4t.large.2c | 4核 16GB | 400 |
| pg.x8.large.2c | 4核 32GB | 400 |
| pg.x8t.large.2c | 4核 32GB | 400 |
| pg.n2.xlarge.1 | 8核 16GB | 800 |
| pg.n4.xlarge.1 | 8核 32GB | 800 |
| pg.x2.xlarge.2c | 8核 16GB | 800 |
| pg.x2t.xlarge.2c | 8核 16GB | 800 |
| pg.x4.xlarge.2c | 8核 32GB | 800 |
| pg.x4t.xlarge.2c | 8核 32GB | 800 |
| pg.x8.xlarge.2c | 8核 64GB | 800 |
| pg.x8t.xlarge.2c | 8核 64GB | 800 |
| pg.x2.3large.2c | 12核 24GB | 1200 |
| pg.x2t.3large.2c | 12核 24GB | 1200 |
| pg.x4.3large.2c | 12核 48GB | 1200 |
| pg.x4t.3large.2c | 12核 48GB | 1200 |
| pg.x8.3large.2c | 12核 96GB | 1200 |
| pg.x8t.3large.2c | 12核 96GB | 1200 |
| pg.n2.2xlarge.1 | 16核 32GB | 1600 |
| pg.n4.2xlarge.1 | 16核 64GB | 1600 |
| pg.n8.2xlarge.1 | 16核 128GB | 1600 |
| pg.x2.2xlarge.2c | 16核 32GB | 1600 |
| pg.x2t.2xlarge.2c | 16核 32GB | 1600 |
| pg.x4.2xlarge.2c | 16核 64GB | 1600 |
| pg.x4t.2xlarge.2c | 16核 64GB | 1600 |
| pg.x8.2xlarge.2c | 16核 128GB | 1600 |
| pg.x8t.2xlarge.2c | 16核 128GB | 1600 |
| pg.x2.3xlarge2c | 24核 48GB | 2400 |
| pg.x2t.3xlarge.2c | 24核 48GB | 2400 |
| pg.x4.3xlarge.2c | 24核 96GB | 2400 |
| pg.x4t.3xlarge.2c | 24核 96GB | 2400 |
| pg.x8.3xlarge.2c | 24核 192GB | 2400 |
| pg.x8t.3xlarge.2c | 24核 192GB | 2400 |
| pg.n4.4xlarge.1 | 32核 128GB | 3200 |
| pg.n8.4xlarge.1 | 32核 256GB | 3200 |
| pg.x2.4xlarge.2c | 32核 64GB | 3200 |
| pg.x2t.4xlarge.2c | 32核 64GB | 3200 |
| pg.x4.4xlarge.2c | 32核 128GB | 3200 |
| pg.x4t.4xlarge.2c | 32核 128GB | 3200 |
| pg.x8.4xlarge.2c | 32核 256GB | 3200 |
| pg.x8t.4xlarge.2c | 32核 256GB | 3200 |
| pg.x2.13large.2c | 52核 104GB | 5200 |
| pg.x4.13large.2c | 52核 192GB | 5200 |
| pg.x8.13large.2c | 52核 384GB | 5200 |
| pg.n4.8xlarge.1 | 56核 256GB | 5600 |
| pg.n8.8xlarge.1 | 56核 512GB | 5600 |
| pg.x2.8xlarge.2c | 64核 128GB | 6400 |
| pg.x2t.8xlarge.2c | 64核 128GB | 6400 |
| pg.x4.8xlarge.2c | 64核 256GB | 6400 |
| pg.x4t.8xlarge.2c | 64核 256GB | 6400 |
| pg.x8.8xlarge.2c | 64核 512GB | 6400 |
| pg.x8t.8xlarge.2c | 64核 512GB | 6400 |
| pg.x2.13xlarge.2c | 104核 192GB | 10400 |
| pg.x4.13xlarge.2c | 104核 384GB | 10400 |
| pg.x8.13xlarge.2c | 104核 768GB | 10400 |
只读实例
| 规格代码 | CPU和内存 | 权重 |
|---|---|---|
| pgro.x2.medium.1c | 2核 4GB | 200 |
| pgro.x4.medium.1c | 2核 8GB | 200 |
| pgro.x8.medium.1c | 2核 16GB | 200 |
| pgro.x2.large.1c | 4核 8GB | 400 |
| pgro.x4.large.1c | 4核 16GB | 400 |
| pgro.x8.large.1c | 4核 32GB | 400 |
| pgro.x2.xlarge.1c | 8核 16GB | 800 |
| pgro.x4.xlarge.1c | 8核 32GB | 800 |
| pgro.x8.xlarge.1c | 8核 64GB | 800 |
| pgro.x2.3large.1c | 12核 24GB | 1200 |
| pgro.x4.3large.1c | 12核 48GB | 1200 |
| pgro.x8.3large.1c | 12核 96GB | 1200 |
| pgro.x2.2xlarge.1c | 16核 32GB | 1600 |
| pgro.x4.2xlarge.1c | 16核 64GB | 1600 |
| pgro.x8.2xlarge.1c | 16核 128GB | 1600 |
| pgro.x2.3xlarge.1c | 24核 48GB | 2400 |
| pgro.x4.3xlarge.1c | 24核 96GB | 2400 |
| pgro.x8.3xlarge.1c | 24核 192GB | 2400 |
| pgro.x2.4xlarge.1c | 32核 64GB | 3200 |
| pgro.x4.4xlarge.1c | 32核 128GB | 3200 |
| pgro.x8.4xlarge.1c | 32核 256GB | 3200 |
| pgro.x2.13large.1c | 52核 104GB | 5200 |
| pgro.x4.13large.1c | 52核 192GB | 5200 |
| pgro.x8.13large.1c | 52核 384GB | 5200 |
| pgro.x2.8xlarge.1c | 64核 128GB | 6400 |
| pgro.x4.8xlarge.1c | 64核 256GB | 6400 |
| pgro.x8.8xlarge.1c | 64核 512GB | 6400 |
| pgro.x2.13xlarge.1c | 104核 192GB | 10400 |
| pgro.x4.13xlarge.1c | 104核 384GB | 10400 |
| pgro.x8.13xlarge.1c | 104核 768GB | 10400 |