If you have checked out the billing details of the instance, see Billing Overview. Database fees for one hour will be frozen when you create a pay-as-you-go database. Make sure that your account balance is sufficient before making a purchase.
2. Configure the instance as needed based on the parameter descriptions below:
Parameter
Required or not
Description
Billing Mode
Supported
Supports monthly subscription and pay-as-you-go billing. For guidance on choosing a billing method, see Billing Overview.
Region
Supported
Select a region where your instance resides. You should select a region closest to you to reduce access latency.
Note that the region cannot be changed after the instance is successfully created.
We recommend that you select the same region as the CVM instance for private network communication.
Tencent Cloud products in different regions cannot communicate with each other over the private network. For example, CVM instances in Guangzhou region cannot access TencentDB for Redis® instances in Shanghai region over the private network. Select a region with caution, as it cannot be changed after purchase. If you need cross-region communication over the private network, see Peering Connection.
Product Version
Supported
Select Memory Edition, a high-performance edition based on the open-source Redis engine. The CKV Edition is currently unavailable.
Compatible Versions
Supported
It is a high-performance edition based on open-source Redis and compatible with Redis 6.2, 5.0, 4.0, and 2.8.
v2.8 is unavailable for purchase currently, and v4.0 or above is recommended. To purchase v2.8, submit a ticket.
v4.0 and above supports standard architecture and cluster architecture.
v2.8 only supports the standard architecture.
Memory Capacity
Supported
When selecting the Standard Architecture, you need to configure the required memory specifications, which range from 256MB to 64GB.
Replica Quantity
Supported
Choose the number of database replicas. Multiple replicas provide high availability for primary and secondary instances, increase data security, and enable read-only performance scaling through replicas.
The replica quantity may vary by region or edition as configured in the console by default.
Shard Quantity
Supported
When selecting Cluster Architecture for the architecture version, you need to set the number of shards. Increasing the number of shards can enhance the storage capacity of the cluster. Please choose according to your needs.
Shard Capacity
Supported
When selecting the cluster architecture, you need to set the capacity size for each shard.
Specification Preview
-
Preview the selected specification and the supported maximum number of connections and maximum network throughput to verify whether they meet your expectations.
Read-Only Replica
Not required
Specify whether to enable read/write separation.
After read/write separation is enabled, write operations are routed to the master node, and read operations are routed to the replica node. The data read from the replica node will be delayed after the master node.
If you don't enable read/write separation upon purchase, you can also enable it later as needed. For more information, see Read/Write Separation.
Network type
Supported
Currently, only VPC is supported.
AZ
Supported
Choose whether to enable Multi-AZ deployment. Both single-AZ and multi-AZ deployments are supported. Compared to single-AZ instances, multi-AZ instances offer higher availability and disaster recovery capabilities. For more information, see Multi-AZ Deployment.
If the master node is deployed in a single AZ, specify an AZ for it.
If the source instance is deployed in multiple AZs, after selecting the master AZ, you need to specify an AZ for a replica in the drop-down list of replica x, where x is the replica number, such as replica 1 and replica 2.
IPv4 Network
Supported
Select the specific Virtual Private Cloud (VPC) and subnet. We recommend choosing the same VPC in the same region as the cloud server.
VPCs are region-specific (e.g., Guangzhou), while subnets are AZ-specific (e.g., Guangzhou Zone 1). One VPC can be divided into one or multiple subnets, which are interconnected over the private network by default. Different VPCs are isolated over the private network by default, no matter whether they are in the same or different regions.
After purchasing an instance, you can switch to a private network as detailed in Switching Networks. You can also click Create VPC and Create Subnet to establish the desired network environment. For more information, refer to Creating a VPC.
Port
Supported
Customize the port number, which is 6379 by default and ranges from 1024 to 65535. You can modify it after the purchase.
Parameter Template
Supported
Select the parameter template associated with the instance.
The system will automatically adapt the corresponding default template based on the selected compatible version and architecture, allowing you to configure parameters in batches for the instance. For more information, see the default template in Managing Parameter Templates.
To create your own template, click Create Parameter Template. For detailed instructions, please refer to Managing Parameter Templates.
Specify Project
Supported
Assign the instance to a project from the drop-down list for easy management.
By default, the specified project is Default Project.
Click Create Project to enter the Project Management page and customize the project name to manage your Tencent Cloud resources.
Tags
Not required
Add tags to your instance for easy classification and management. Click Add to select tag keys and values.
Security Group
Supported
Set security group rules to control the inbound traffic to your database.
You can either select a security group from the Existing Security Groups drop-down list or click Custom Security Groups to create one and set new inbound rules. For more information, see Configuring Security Group.
After selecting a security group from the drop-down list, click Preview Rules to learn about the protocol rules and policies of this security group.
Instance name
Supported
You can enter up to 60 letters, digits, hyphens, and underscores.
Custom Password
Supported
Choose an authentication method, either Password Authentication or No Password Authentication. The default is Password Authentication.
Password
Not required
Set Password: When choosing Password Authentication, you need to set an access password for the instance. The password complexity requirements are:
Contain [8,32] characters.
It must contain at least two of the following four types: lowercase letters, uppercase letters, digits, and symbols (()`~!@#$%^&*-+=_|{}[]:;<>,.?/).
It cannot start with a slash (/)
Confirm password
Not required
Enter the access password for the instance again.
Quantity
Supported
The maximum number of monthly subscribed instances is 100 for each purchase. You can purchase up to 30 pay-as-you-go instances at a time. 1–100 instances can be purchased in each region.
Validity Period
Not required
If you select the Monthly Subscription billing mode, you need to choose the duration of the instance purchase. The longer the duration, the greater the discount, allowing you to select based on your actual business needs.
Auto-renewal
Not required
If you select the Monthly Subscription billing mode, you can choose whether to enable the Auto-Renewal feature. If enabled, after the instance expires, fees will be automatically deducted monthly from your Tencent Cloud account.
Terms of Service
Supported
Click TencentDB Terms of Service to fully understand the content, service fees, usage rules, intellectual property rights, and other related terms for using TencentDB services.
Click Service Level Agreement to learn about the agreement that needs to be followed when using TencentDB for Redis®.
Select I have read and agreed to the TencentDB Service Level Agreement and Service Level Agreement.
3. After verifying that the parameters are correctly configured, click Buy Now. After the purchase success message is displayed, click Go to Console. After the instance becomes Running in the status, you can use it normally.
You can flexibly adjust the Redis instance specifications based on your actual business needs, thereby better optimizing resource utilization and real-time cost optimization. For specific operations, please see Changing Instance Specifications.
For instances with assigned tags, you can also edit tag keys and values again. For directions, see Editing Instance Tag.
Renaming instance
If the current instance name is not easily identifiable or manageable, you can click
in the Instance ID / Name column of the Instance List to rename the instance.
Resetting instance access password
If you have forgotten the default account password or need to update an old password, you can reset the password directly. For detailed instructions, please refer to Reset Password.
Upgrading Instance
TencentDB for Redis® instances can be upgraded from an earlier version to a later version, with cross-version upgrade supported. For detailed directions, see Upgrading Instance Version.
TencentDB for Redis® instances can be upgraded from Standard Architecture to Cluster Architecture. For detailed directions, see Upgrading Instance Architecture.
Overdue Payment
After activating TencentDB for Redis®, please ensure that your account balance is sufficient. Insufficient account balance may lead to overdue payments or even instance reclamation. For more information, see Overdue Payment Instructions.
