PolarDB:Quick purchase

Prerequisites

You have registered and logged on to an Alibaba Cloud account.

Purchase procedure

1. Go to the PolarDB Quick Purchase page and configure the following parameters (keep other settings as default). For more information, see Custom purchase.

   Parameter	Description
   Billing Method	Subscription: You select resources of fixed specifications and pay upfront when you create a cluster. The longer the subscription duration, the greater the discount. This method is suitable for businesses with consistent and long-term resource requirements. Pay-as-you-go: You select resources but do not need to pay upfront for the resources when you create a cluster. You are charged based on your actual resource usage. This method is suitable for businesses with flexible resource requirements. Serverless: You do not need to select resources of fixed specifications or pay upfront when you create a cluster. This mode refers to the dynamic elastic scaling capability of PolarDB clusters, which can adjust according to changes in system workload. This method is suitable for business services with highly variable or unpredictable workloads. Note When using a PolarDB cluster, if you find that the current billing method does not meet your business requirements, you can change the billing method at any time based on your actual needs.
   Region	The region in which you want to deploy the PolarDB cluster. Note Make sure that PolarDB and the ECS instance that needs to connect to it are created in the same region. Otherwise, they cannot communicate through the internal network (private network) and can only communicate through the external network (public network), which cannot provide optimal performance.
   Database Engine	The database engine of the cluster. Quick purchase only supports PostgreSQL 14 version. Note If you need to purchase other versions, select the Custom Purchase tab in the upper-left corner.
   Edition	The edition of the cluster. Enterprise Edition Standard Edition Note You need to select the edition of the cluster only when the billing method is subscription or pay-as-you-go. There are functional differences between Enterprise Edition and Standard Edition. For more information, see Comparison between Enterprise Edition and Standard Edition.
   Network Type	The virtual private cloud (VPC) and the vSwitch to which the PolarDB cluster belongs. Note If you previously created a VPC based on your network plan, select the VPC and its associated vSwitch. For example, if you have created an ECS instance in a VPC that meets your business requirements, select the VPC. If you have not created a VPC that meets your business requirements, you can use the default VPC and vSwitch.
   Deployment Mode (Optional)	The number of nodes and high availability (HA) mode of the cluster. Single Node: Contains only one primary node (read/write node). Number of Nodes: 1. High Availability Mode: Single zone (hot standby storage cluster disabled). Dual Node High Availability: Contains one primary node (read/write node) and one read-only node. Number of Nodes: 2. High Availability Mode: Single zone (hot standby storage cluster disabled). Multi-zone High Availability: Contains one primary node (read/write node) and one read-only node. Data is distributed across multiple zones. The primary zone and secondary zone each store a copy of the full data. Number of Nodes: 2. High Availability Mode: Dual zone (hot standby storage cluster enabled). Note You need to select the high availability mode of the cluster only when the billing method is subscription or pay-as-you-go.
   Node Specification	The compute node specifications of the PolarDB cluster. You can select based on your actual needs. If you need to purchase other specifications, select the Custom Purchase tab in the upper-left corner.
   Storage Capacity (Optional)	The storage capacity of the PolarDB cluster. Note You need to configure the storage capacity of the cluster only when the billing method is subscription or pay-as-you-go, and the edition is Standard Edition.

   More Configurations (Optional)

   Parameter	Description
   Resource Group	Select a target resource group from created resource groups. Note A resource group is a container that is used to manage a collection of related resources under a single Alibaba Cloud account. A resource can belong to only one resource group.

2. On the right side of the page, confirm that all configuration items (such as Billing Method, Region, Deployment Mode, Resource Group, etc.) meet your business requirements. Then configure the following parameters:

   Parameter	Description
   Quantity	The number of clusters to purchase. Note You can create a maximum of 50 clusters at a time. This allows you to create multiple clusters in specific scenarios such as deploying multiple game servers at a time. You can purchase a maximum of 50 clusters with your Alibaba Cloud account.
   Duration	You need to configure the Subscription Duration of the cluster and select whether to Enable Auto-renewal only when the billing method is Subscription. Note We recommend that you select Enable Auto-renewal to avoid service interruptions due to overdue payments.

   Review the total cost and detailed cost breakdown (such as compute specifications, storage, network, etc.), and click Buy Now, which indicates that you have read and agreed to the service agreement and any product-specific terms that you have checked on this page (if any). On the Payment page, confirm the unpaid order information, select a payment method, and click Pay.

The cluster is created 10 to 15 minutes after you complete the payment. You can then view the newly created cluster on the Clusters page.