Release Notes
Announcements
Parameter Name | Required or Not | Parameter Description |
Billing Mode | Yes | Supported billing modes include yearly/monthly subscription and pay-as-you-go. For how to choose a billing mode, see Billing Overview. |
Region | Yes | Select a region for the instance. You can select the nearest region to reduce access latency. Once an instance is created successfully, the region cannot be changed. Please select the region with caution. Please select the same region as the Cloud Virtual Machine (CVM) instance; otherwise, communication via the private network cannot be established directly. Cloud products in different regions cannot communicate via the private network, and the region cannot be changed after purchase. Please select the region with caution. For example, Cloud Virtual Machines (CVM) in the Guangzhou region cannot access Tencent Cloud Distributed Cache databases in the Shanghai region via the private network. For cross-region private network communication, see Cloud Connect Network (CCN). |
Instance Edition | Yes | Redis Edition: a high-performance edition based on the open-source Redis storage engine. Memcached Edition: an edition based on the Memcached storage engine. Valkey Edition: an edition based on the ValKey storage engine. |
Compatible Version | Yes | Redis Edition: compatible with Redis versions 7.0, 6.2, 5.0, 4.0, and 2.8. Redis version 2.8 is no longer available for purchase. It is recommended to choose version 4.0 or later. If you need to purchase version 2.8, please submit a ticket to apply. Memcached Edition: compatible with Memcached protocol version 1.6. Valkey Edition: compatible with ValKey version 8.0. |
Architecture | Yes | Select a deployment architecture. For details, see Memory Edition (Standard Architecture) and Memory Edition (Cluster Architecture). Redis Edition: Version 4.0 or later supports Standard Architecture and Cluster Architecture. Version 2.8 only supports Standard Architecture. Memcached Edition: only supports Cluster Architecture. Valkey Edition: supports Standard Architecture and Cluster Architecture. |
Memory | Yes | When selecting Standard Architecture, you need to configure the required memory specifications in the range of 256 MB to 64 GB. |
Replica Quantity | Yes | Select the number of database replicas. Note: Multiple replicas provide primary/secondary high availability and enhance data security. You can also scale read-only performance by using replicas. The number of replicas in different regions or editions may vary. It is subject to the default settings in the console. |
Shard Quantity | Yes | When selecting Cluster Architecture, you need to set the number of shards. Increasing the number of shards can enhance the cluster's storage capacity. Please select based on your needs. |
Shard Capacity | Yes | When selecting Cluster Architecture, you need to set the capacity for each shard. |
Specs Preview | - | Preview the currently selected specifications and the supported maximum number of connections and maximum network throughput to confirm whether they meet your expectations. Note: For newly purchased instances, the maximum network throughput here already includes the default additional bandwidth. The additional bandwidth for Standard Architecture is consistent with that of Cluster Architecture 1 shard. |
Read-Only Replica | No | Please select whether to enable the read/write separation feature. This feature is only supported in the Redis edition and is currently not available for the Memcached and Valkey editions. Enabling read/write separation routes write operations to the primary node and read operations to replica nodes. Data read from replica nodes will lag behind the primary node. If you disable the feature when you purchase instances, you can enable it later based on actual business needs. For details, see Read/Write Separation. |
Network | Yes | Supports only VPC. |
AZ | Yes | Select whether to enable multi-AZ deployment. Both single-AZ and multi-AZ deployments are supported. Compared with single-AZ instances, multi-AZ instances offer higher availability and disaster recovery capabilities; see Multi-AZ Deployment. For single-AZ deployment, you must specify an AZ for the primary node simultaneously. For multi-AZ deployment, after selecting the primary AZ, you must also assign an AZ to each replica from the dropdown list under Replica x, where x represents the replica number, such as Replica 1 and Replica 2. |
IPv4 Network | Yes | Select the specific VPC and subnet. We recommend that you select the same VPC as your CVM instance in the same region. A VPC has a region attribute (such as Guangzhou), while a subnet has an AZ attribute (such as Guangzhou Zone 1). A VPC can be divided into one or more subnets. Different subnets in the same VPC are communicable on the private network by default, and different VPCs (regardless of whether they are in the same region) are isolated on the private network by default. After purchasing an instance, you can switch its VPC. For specific operations, see Switching VPCs. You can also click Create VPCs and Create Subnets to rebuild the required network environment. For specific operations, see Creating VPC. |
Port | Yes | Custom port number in the value range of [1024,65535]. The network port can be modified after the instance is purchased. Redis Edition: The default port number is 6379. Memcached Edition: The default port number is 11211. Valkey edition: The default port number is 6379. |
Parameter Template | No | Select the Redis Edition-related parameter template. Memcached Edition and ValKey Edition do not support selecting parameter templates. The system automatically adapts the corresponding default template based on the selected compatible version and architecture, and configures parameter attributes for instances in batches. For details about parameter templates, see the default system templates in Managing Parameter Templates. If you want to create a template, click Create Parameter Template. For specific operations, see Managing Parameter Templates. |
Project | Yes | Assign the corresponding project to the instance in the dropdown list. You can manage the instance by project. By default, the project is Default Project. Click Create Project on the Project Management page, where you can customize the project name to manage cloud resources. |
Tag | No | Set a tag to the instance. You can manage the instance by tag. Click Add to select the tag key and value. |
Security Group | Yes | Configure security group rules for the instance to control inbound traffic to the database. You can select an existing security group in the Please select dropdown list, or click Custom Security Groups to set new inbound rules for a security group. For details, see Configuring Security Group. After selecting a security group in the dropdown list, click Preview Rules to view its protocol rules and policies. |
Alarm Policy | Yes | Select an alarm policy for monitoring metric items. If not selected, Distributed Cache provides a default alarm policy. You can navigate to the alarm management page of Tencent Cloud Observability Platform (TCOP) to view the default policy. Select a custom alarm policy. Log in to the Tencent Cloud Observability Platform (TCOP) and configure alarm policies on the Alarm Management page in advance. For specific operations, see Creating Alarm Policies. |
Instance Name | Yes | Enter only Chinese characters, English letters, digits, hyphens "-", and underscores "_" with a length less than 60 characters. |
Set Password | Yes | Select the password authentication method. You can choose between Password Authentication and Password-Free Authentication. The default is set to Password Authentication. For Memcached Edition, only password-free authentication is supported, which is Password-Free Access. |
Password | No | When Set Password is set to Password Authentication, you need to set an access password for the instance. The password complexity requirements are as follows: The number of characters should be between 8 and 64. The password should contain at least two types of the following characters: lowercase letters, uppercase letters, digits, and special characters ()`~!@#$%^&*-+=_|{}[]:;<>,.?/. The password cannot start with "/". |
Confirm Password | No | Re-enter the access password of the instance. |
Quantity | Yes | Pay-as-you-go: A maximum of 50 instances can be purchased at a time, with a limit of 200 instances per region. Yearly/monthly subscription: A maximum of 50 instances can be purchased at a time, with no limit per region. |
Validity Period | No | When the yearly/monthly subscription billing mode is selected, you need to choose the validity period for the instance. Greater discounts are applied for longer validity periods. Select the period based on actual business needs. |
Auto-Renewal | No | When selecting the yearly/monthly subscription billing mode, you can choose whether to enable the automatic renewal feature, which means Tencent Cloud will automatically deduct fees from your account monthly upon expiration. |
Terms of Service | Yes | Click Terms of Service to read and fully understand the relevant terms regarding service content, fees, usage rules, intellectual property, and other aspects of using the cloud database service. Click SLA to learn about the agreements to be complied with when Tencent Cloud Distributed Cache is used. Select I have read and agreed to Terms of Service and Service Level Agreement. |
API Name | API Feature |
Create a Tencent Cloud Distributed Cache instance |
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