Commercial Billing and Activity Description for Database Proxy

The database proxy is a network proxy service between TencentDB and the application service, serving to delegate all requests made by the application service as it accesses the database. The database proxy offers advanced features such as automatic read/write separation, transaction split, and connection pool, featuring high availability, outstanding performance, maintainability, and user-friendly operation. This document will provide you with a guide to the commercial billing and activities of TencentDB for MySQL's database proxy.
I. Commercial Billing Overview
Billing Time
Billing for the TencentDB for MySQL database proxy will start on April 1, 2024, at 16:00:00 Beijing Time.
Billing Mode
At present, only pay-as-you-go billing is supported.
Pricing for Database Proxy
TencentDB for MySQL database proxy adopts pay-as-you-go billing, where the billing item is CU. The pricing of the database proxy varies by region, as displayed in the table below.
Note:
The term CU refers to the minimum billing specification of the database proxy (i.e. the price for a 2-core proxy specification with 4,000 MB memory). There are three specifications for the database proxy node: a 2-core one with 4,000 MB memory, a 4-core one with 8,000 MB memory, and an 8-core one with 16,000 MB memory. These correspond to 1 CU, 2 CU, and 4 CU respectively.
Region
Price (USD/CU/Hour)
Shanghai, Nanjing, Chongqing, Chengdu, Guangzhou, Beijing
0.06865672
Hong Kong (China)
0.11492537
Mumbai, Jakarta, Virginia, Bangkok, Tokyo, Singapore, Seoul, Toronto, Frankfurt, Silicon Valley, São Paulo
0.11791045
Shenzhen Finance, Beijing Finance, Shanghai Finance
0.11641791
Note:
The regions displayed above represent all the regions where the current instance supports deployment. Some regions do not yet support the database proxy feature. The regions that do support it include Beijing, Shanghai, Guangzhou, Shanghai Finance, Beijing Finance, Chengdu, Chongqing, Nanjing, Hong Kong (China), Tokyo, Bangkok, Virginia, Silicon Valley, Mumbai, Seoul, and Singapore.
Database Proxy Fees Formula
Database proxy fees = (customer-selected proxy node specification/a 2-core one with 4,000 MB memory) x number of nodes x unit price x usage duration
Example:
If a customer activates a database proxy in the Beijing region and sets four 8-core proxy specifications with 16,000 MB memory, thereby using a total of 28 hours, then at this moment the cost of the customer's database proxy corresponds to: 
(an 8-core one with 16,000 MB memory/a 2-core one with 4,000 MB memory) x 4 x 0.06865672 USD x 28 = 30.7582106 USD
II. Discount Overview
TencentDB for MySQL Database proxy's business billing policy, including any applicable discounts for both new and existing customers, is detailed as follows.
Definition
Noun
Description
Existing Customer
TencentDB for MySQL will record the proxy's initiation case at the time of official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time). Customers possessing effective proxy nodes at this moment will be considered as existing customers.
New Customer
As of the official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time), TencentDB for MySQL will record the activation status of the database proxy. Any customers who have no proxy node in operation as of this time will be considered as new customers.
Note:
Customers who previously activated a database proxy before the start of official commercial billing but deactivated it before the official billing times are also new customers.
Total Discounted Volume
For existing customers: Total Discounted Volume refers to the database proxy's total amount of discount, which is automatically calculated based on the customer's actual database proxy activation status as recorded at the official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time).
For new customers: The discounted scope for each Tencent Cloud UIN account is limited to 3 instances, each of which is equipped with a total discounted volume of a 32-core one with 64,000 MB memory (16 CU).
Discount for Existing Customers
After the billing starts, the total discounted volume for the existing customers' database proxy can continue to be used for a trial period of three months. Subsequently, three months later (on July 1, 2024, at 16:00:00), these database proxy specifications will be charged at the regular service price.
Promotions in Discounted Period
Scenario
Description
Example (Take the instance with a total discounted volume of a 16-core one with 32,000 MB memory as an example.)
Adjusting the node specifications
After the adjustment of the total discounted volume in the instance, the corresponding database proxy node can be used for free for three months from the official billing time.
Adjusting the node specification to an 8-core one with 16,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
﻿
After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.
Adjusting the node specification to a 32-core one with 64,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (a 16-core one with 32,000 MB memory) require payment, while the remainder is free.
Adjusting the number of nodes
After the adjustment of the total discounted volume in the instance, the corresponding database proxy node can be used for free for three months from the official billing time.
Reducing the number of nodes from four to two, and adjusting the total proxy specifications from a 16-core one with 32,000 MB memory to an 8-core one with 16,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
﻿
After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.
Increasing the number of nodes from four to five, and adjusting the total instance proxy specification from a 16-core one with 32,000 MB memory to a 20-core one with 40,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (a 4-core one with 8,000 MB memory) require payment, while the remainder is free.
Adjusting the Availability Zone
Only the Availability Zone is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for three months from the official billing time.
The switch from Beijing Zone 6 to Beijing Zone 7 does not affect the proxy specifications. The proxy specifications within the total discounted volume of the instance continue to enjoy the free promotions.
Adjusting the Kernel Minor Version of Database Proxy
Only the version is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for an additional three months after official billing begins.
Database proxy minor version upgraded from 1.3.7 to 1.3.8, and the proxy specifications remain unchanged. Under the total instance discount amount, the proxy specification continues to enjoy free promotions.
Returning Instances
When returning the discounted instances, the discount qualification ceases to apply.
-
﻿
Refunds do not apply to instances that did not receive a discount; since the instance itself did not receive any discount, there is no consideration regarding any discounted changes.
-
Discount for New Customers
Starting from the official billing time, a Tencent Cloud UIN account is eligible to enjoy a 15-day free trial of database proxy features for three instances. Additionally, the total discounted volume for each instance's database proxy node is up to a 32-core one with 64,000 MB memory.
Promotion Details Table
Scenario
Description
Example (Take the instance with a total discounted volume of a 32-core one with 64,000 MB memory as an example.)
Adjusting the number of nodes
After the adjustment of the total discounted volume in the instance, the corresponding database proxy node can experience a 15-day free trial when the database proxy is activated.
Reducing the number of nodes from four to two, and adjusting the total proxy specifications from a 32-core one with 64,000 MB memory to a 16-core one with 32,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
﻿
After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.
Increasing the number of nodes from four to five, and adjusting the total instance proxy specification from a 32-core one with 64,000 MB memory to a 40-core one with 80,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (an 8-core one with 16,000 MB memory) require payment, while the remainder is free.
Adjusting the node specifications
After the adjustment of the total discounted volume in the instance, the corresponding database proxy node is free for 15 days from the official billing time.
Adjusting the node specification to an 8-core one with 16,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
﻿
After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.
Adjusting the node specification to a 40-core one with 80,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (8-core one with 16,000 MB memory) require payment, while the remainder is free.
Adjusting the Availability Zone
Only the Availability Zone is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for 15 days from the official billing time.
The switch from Beijing Zone 6 to Beijing Zone 7 does not affect the proxy specifications. The proxy specifications within the total discounted volume of the instance continue to enjoy the free promotions.
Adjusting the Kernel Minor Version of Database Proxy
Only the version is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for an additional 15 days after official billing begins.
Database proxy minor version upgraded from 1.3.7 to 1.3.8, and the proxy specifications remain unchanged. Under the total instance discount amount, the proxy specification continues to enjoy free promotions.
Returning Instances
When returning the discounted instance, the discount qualification for that instance concurrently ceases to apply, reducing the count of discounted instance qualifications under the same UIN account by one.
For the instance under UIN account 1000*23412, after the activation of a new database proxy, the instance would lose its eligibility for offers upon refund. This leads to the decrement of the instance count, eligible for offers under this UIN account, by one leaving only two instances eligible for ongoing offers.
﻿
Refunds do not apply to instances that did not receive a discount; since the instance itself did not receive any discount, there is no consideration regarding any discounted changes.
-
III. Bill Description
You can inquire about the charges incurred by employing the TencentDB for MySQL Database proxy service via the Billing Center in Tencent Cloud Console, which aids your understanding of the billing situation for using this feature. For the specific query operation, see Viewing Bills.
﻿

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Region	Price (USD/CU/Hour)
Shanghai, Nanjing, Chongqing, Chengdu, Guangzhou, Beijing	0.06865672
Hong Kong (China)	0.11492537
Mumbai, Jakarta, Virginia, Bangkok, Tokyo, Singapore, Seoul, Toronto, Frankfurt, Silicon Valley, São Paulo	0.11791045
Shenzhen Finance, Beijing Finance, Shanghai Finance	0.11641791

Noun	Description
Existing Customer	TencentDB for MySQL will record the proxy's initiation case at the time of official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time). Customers possessing effective proxy nodes at this moment will be considered as existing customers.
New Customer	As of the official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time), TencentDB for MySQL will record the activation status of the database proxy. Any customers who have no proxy node in operation as of this time will be considered as new customers. Note: Customers who previously activated a database proxy before the start of official commercial billing but deactivated it before the official billing times are also new customers.
Total Discounted Volume	For existing customers: Total Discounted Volume refers to the database proxy's total amount of discount, which is automatically calculated based on the customer's actual database proxy activation status as recorded at the official commercial billing time (on April 1, 2024, at 16:00:00 Beijing time). For new customers: The discounted scope for each Tencent Cloud UIN account is limited to 3 instances, each of which is equipped with a total discounted volume of a 32-core one with 64,000 MB memory (16 CU).

Scenario	Description	Example (Take the instance with a total discounted volume of a 16-core one with 32,000 MB memory as an example.)
Adjusting the node specifications	After the adjustment of the total discounted volume in the instance, the corresponding database proxy node can be used for free for three months from the official billing time.	Adjusting the node specification to an 8-core one with 16,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
Adjusting the node specifications		After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.	Adjusting the node specification to a 32-core one with 64,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (a 16-core one with 32,000 MB memory) require payment, while the remainder is free.
Adjusting the number of nodes	After the adjustment of the total discounted volume in the instance, the corresponding database proxy node can be used for free for three months from the official billing time.	Reducing the number of nodes from four to two, and adjusting the total proxy specifications from a 16-core one with 32,000 MB memory to an 8-core one with 16,000 MB memory. The instances that do not exceed the total discounted volume still enjoy the free promotions.
Adjusting the number of nodes		After the adjustment, if the total discounted volume of the instance exceeds the discount limit, an additional fee will be charged for the surplus.	Increasing the number of nodes from four to five, and adjusting the total instance proxy specification from a 16-core one with 32,000 MB memory to a 20-core one with 40,000 MB memory. The instances that exceed the total discounted volume with the exceeding portion (a 4-core one with 8,000 MB memory) require payment, while the remainder is free.
Adjusting the Availability Zone	Only the Availability Zone is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for three months from the official billing time.	The switch from Beijing Zone 6 to Beijing Zone 7 does not affect the proxy specifications. The proxy specifications within the total discounted volume of the instance continue to enjoy the free promotions.
Adjusting the Kernel Minor Version of Database Proxy	Only the version is adjusted, and the proxy specification does not change. The corresponding database proxy node is free for an additional three months after official billing begins.	Database proxy minor version upgraded from 1.3.7 to 1.3.8, and the proxy specifications remain unchanged. Under the total instance discount amount, the proxy specification continues to enjoy free promotions.
Returning Instances	When returning the discounted instances, the discount qualification ceases to apply.	-
Returning Instances		Refunds do not apply to instances that did not receive a discount; since the instance itself did not receive any discount, there is no consideration regarding any discounted changes.	-

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I. Commercial Billing Overview

Billing Time

Billing Mode

Pricing for Database Proxy

Database Proxy Fees Formula

II. Discount Overview

Definition

Discount for Existing Customers

Promotions in Discounted Period

Discount for New Customers

Promotion Details Table

III. Bill Description