This topic describes RDS MySQL Basic Edition instances.
RDS Basic Edition instances, also known as Basic Edition instances, consist of a single database node. They use a compute-storage decoupled architecture and offer exceptional cost performance.
RDS Basic Edition instances have only one database node and no secondary node for hot backup. If this node unexpectedly goes down or you restart the instance, change its configuration, or upgrade its version, the instance will be unavailable for an extended period. If your business requires high database availability, do not use Basic Edition instances. Instead, choose another edition such as the high-availability series. Some Basic Edition instances also support upgrading to the high-availability series.
On the instance details page, the Instance Type field in the Basic Information section displays Standard Instance (Basic Edition), indicating that the instance is a Basic Edition instance.
The following topology diagram compares the Basic Edition and the high-availability series.
Benefits
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Performance
Because no secondary node is provided, the primary node does not incur additional performance overhead from real-time database replication. As a result, the Basic Edition delivers better performance than the high-availability series with the same configuration.
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Reliability
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Compute and storage are decoupled. A failure of the compute node does not cause data loss.
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Data reliability is ensured through multi-replica storage on Alibaba Cloud's large-scale Apsara distributed storage system.
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Cost
Using fewer database nodes, the Basic Edition significantly reduces costs—pricing can be as low as half that of the high-availability series.
Features
The Basic Edition supports basic features such as IP address whitelisting, Monitoring and Alerts, and backup and recovery. It does not support the following features:
For a complete list of supported features, see Feature overview.
Scenarios
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Small websites or applications
Use ApsaraDB at exceptional cost performance without worrying about database O&M, so you can focus on growing your business.
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Personal learning
Beginners can use the Basic Edition to test and learn database operations.
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Development and testing
Leverage ApsaraDB’s rapid provisioning to create and release resources anytime, anywhere, greatly improving development efficiency.
Purchase an instance
To purchase a Basic Edition instance, see Step 1: Quickly create an RDS MySQL instance.
Get started
Use the Quick Start guide to quickly create an RDS MySQL database instance and connect to it. For more information, see RDS MySQL Quick Start.
Upgrade to the high-availability series
You can upgrade RDS MySQL Basic Edition instances to the high-availability series. For more information, see Upgrade MySQL Basic Edition to high-availability series.
You can also upgrade RDS MySQL Serverless Basic Edition instances to the high-availability series. For more information, see Upgrade MySQL Serverless Basic Edition to high-availability series.
After upgrading to the high-availability series, you cannot downgrade directly back to the Basic Edition.
FAQ
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Why does upgrading or changing the configuration of the Basic Edition take so long?
Because the Basic Edition uses a single node, upgrades or configuration changes require checking whether the current physical server has sufficient resources. If not, the system copies node data to another physical server and switches over. In extreme cases, this can cause unavailability for more than 30 minutes. We recommend using the high-availability series or Cluster Edition, which use highly available architectures. Data is copied from secondary instances without affecting your business, resulting in shorter downtime.
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Why does the Basic Edition lack many features? What features does it support?
Because the Basic Edition uses a single node and is unsuitable for most business scenarios, its feature set differs from that of the high-availability series or Cluster Edition. For detailed feature support information, see MySQL feature overview.