You have checked out the billing details of the instance. For more information, 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
Description
Billing Mode
Yes
Pay-as-you-go is supported. For more information, see Billing Overview.
Region
Yes
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 Creating Intra-account Peering Connection.
Instance Edition
Yes
Select Memory Edition, a high-performance edition based on the open-source Redis engine. The CKV Edition is unavailable currently.
Compatible Version
Yes
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 currently, and v4.0 or later is recommended. To purchase v2.8, submit a ticket.
v4.0 or later supports the standard architecture and cluster architecture.
v2.8 only supports the standard architecture.
Memory Capacity
Yes
Configure the required memory size (256 MB–64 GB) if you select Standard Architecture for Architecture.
Replica Quantity
Yes
Select the number of database replicas. Multiple replicas provide master-replica high availability, enhancing the data security. Replicas can also be used to enhance the read-only performance.
The replica quantity may vary by region or edition as configured in the console by default.
Shard Quantity
Yes
Set the number of shards as needed if you select Cluster Architecture for Architecture. The more the shards, the larger the cluster storage capacity.
Shard Capacity
Yes
Set the capacity of each shard if you select Cluster Architecture for Architecture.
Specs 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
No
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
Yes
Currently, only VPC is supported.
AZ
Yes
Choose whether to enable multi-AZ deployment. Both single-AZ deployment and multi-AZ deployment are supported. Multi-AZ deployed instances have higher availability and better disaster recovery capability than single-AZ deployed instances. For more information, see Multi-AZ Deployment.
If the master node is deployed in a single AZ, specify an AZ for it.
If the master node 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
Yes
Select the VPC and subnet. We recommend that you select the same VPC in the same region as the CVM instance to be connected to.
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.
You can switch the VPC after instance purchase as instructed in Configuring Network. You can also click Create VPCs and Create Subnets to create the desired network environment as instructed in Creating VPC.
Port
Yes
Customize the port number, which is 6379 by default and ranges from 1024 to 65535. You can modify it after the purchase.
Parameter Template
Yes
Select the parameter template associated with the instance.
The system automatically matches the appropriate default template based on the selected compatible version and architecture to configure parameters for the instance in batches.
If you want to create your own template, click Create Parameter Template.
Project
Yes
Assign the instance to a project in the drop-down list for easy management.
The default project is Default Project.
You can also click Create Project to enter the Project Management page and customize the project name to manage your Tencent Cloud resources.
Tag
No
Add tags to your instance for easy classification and management. Click Add to select tag keys and values.
Security Group
Yes
Set security group rules to control the inbound traffic to your database.
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 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.
Alarm Policy
No
Choose an alarm policy for the monitoring metrics.
TencentDB for Redis provides a default alarm policy, allowing you to view the default policies on the alarm management page of Tencent Cloud Observability Platform.
Supports Chinese, letters, and digits with a length less than 60, including hyphens (-) and underscores (_).
Setting password
Yes
Select the password authentication method, supporting the choice between Password Authentication and Passwordless Authentication. The default is password authentication.
password
No
When Setting Password is selected as Password Authentication, you must set an access password for the instance. The password complexity requirements are:
The character count must be [8,30].
It must include at least two of the following: lowercase letters, uppercase letters, numbers, and special characters ()`~!@#$%^&*-+=_|{}[]:;<>,.?/ .
It cannot start with /.
Confirming Password
No
Enter the instance access password again.
Purchase Quantity
Yes
Pay-as-you-go purchases are limited to a maximum quantity of 30 per transaction, with a purchase quantity range of [1,100] for each region.
Terms of Service
Yes
Click Terms of Service to fully understand the use of Cloud Database Service content, service fees, usage rules, intellectual property, and other related service terms.
Click Service Level Agreement to understand the agreement that must be complied with when using TencentDB for Redis.
Check the box I have read and agree to the Terms of Service 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 elastically adjust the specification of your TencentDB for Redis instance based on your actual business needs to optimize resource utilization and costs in real time. For detailed directions, see Changing Instance Specification.
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 easy to identify and manage, you can reset it by clicking
in the Instance ID/Name column in the Instance List.
Resetting instance access password
If you forgot or want to change the default account password, you can directly reset it. For detailed directions, see Resetting 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.
Payment overdue
After activating TencentDB for Redis, make sure that your account balance is sufficient. An insufficient balance may cause overdue payments or even instance repossession. For more information, see Payment Overdue.
Yes
No
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