Resource plans

Overview of resource plans

Typically, the subscription billing method offers the best cost-effectiveness. If you plan to hold the instance for the long term, you can directly select the subscription billing method.

If your business may change or need to be adjusted, you can select the pay-as-you-go + resource plan billing method to benefit from the flexibility of pay-as-you-go pricing and enjoy prices close to the subscription rate.

Pricing and capacity of resource plans

Tair (Redis OSS-compatible) uses the unit CU (Capacity Unit) * H, referred to as capacity unit, to define the resource capacity provided by a resource plan. The unit price of a resource plan is CNY 21 per capacity unit. Tair (Redis OSS-compatible) provides three resource plan tiers of different capacities. The larger the capacity of a resource plan, the greater the discount. For resource plans in the same tier, the shorter the validity period, the greater the discount.

Offset rules of resource plans

Offset targets of a resource plan: All pay-as-you-go classic Edition Redis Open-Source Edition or classic Edition Tair (Enterprise Edition) instance type fees in the current account.

Resource plan consumption formula: region offset coefficient * instance type consumption coefficient (capacity units/hour) * duration of use (hours).

For example, for a Redis Open-Source Edition1 GB master-replica instance in the China (Hong Kong) region, the offset coefficient of the China (Hong Kong) region is 1.15, and the instance type consumption coefficient is 0.01 capacity units per hour. The number of capacity units consumed by the instance in 24 hours is 0.01 (capacity units/hour) * 1.15 * 24 (hours) = 0.276 capacity units.

The offset coefficients of different regions and the consumption coefficients of different instance types are as follows.

Region offset coefficient

A resource plan is available globally. When it offsets the instance type fees in different regions, different coefficients are applied.

Instance type consumption coefficient

The following table lists the resource consumption per hour of different instance types.

Procedure

1. Go to the resource plan purchase page.

2. On the Redis resource plan page, configure the following parameters.

   Parameter	Description
   Applicable database type	Fixed to Classic architecture: Redis Community Edition and Tair (Memory-optimized).
   Resource plan tier	Select the resource plan tier. Supported values: 15 to 99 (capacity units), 100 to 999 (capacity units) and 1000 to 10000 (capacity units). The capacity unit (CU*H) is the unit of a resource plan. The larger the capacity, the greater the discount.
   Resource plan capacity	Select the required resource plan capacity. A single resource plan offsets the instance type fees of all pay-as-you-go classic Edition Tair or Redis Open-Source Edition instance type fees in the current account. The estimated consumption of a single instance is calculated as follows: region offset coefficient * instance type consumption coefficient (capacity units/hour) * duration of use (hours). For example, for an 8 GB cluster instance with two replicas (2 nodes, 4 GB per node) of Redis Community Edition in the China (Hangzhou) region, used for 10 days, the expected resource consumption is: 1 (region offset coefficient) * 0.08 (capacity units/hour) * 24 (hours) * 10 (days) = 19.2 capacity units.
   Validity period	The default value is 6 months. 1 year and 2 years are also supported. The 2-year validity period is available only for 1000 to 10000 (capacity units) resource plans. Note A resource plan takes effect immediately after purchase. Upon expiration, any remaining capacity of the resource plan is forfeited.
   Purchase quantity	Specify the number of resource plans to purchase.

3. Select Terms of Service and click Buy Now.

4. Read the service agreement and complete the payment as prompted.

   After payment is successful, the instance fees of all pay-as-you-go classic Edition Tair or Redis Open-Source Edition instances in the account are automatically offset by the resource plan.

Precautions

• A resource plan takes effect immediately after successful subscription. However, the usage details are typically displayed with a delay of 6 hours. We recommend that you wait for a while before viewing them.

• You can purchase multiple resource plans. The plan with the earliest expiration date is used first.

Procedure

1. Log on to the console.

2. In the left-side navigation pane, click Resource Plans.

   You are redirected to the Resource and Instance Management page.

3. On the Resource and Instance Management page, select Resource dimension as Resource plans.

4. View the resource plan overview and offset details.

   • On the Instance Summary tab, you can view the details of all purchased resource plans, such as the total capacity, remaining capacity, effective time, and expiration time.

   • Click the Usage Details tab to view the offset details of the resource plan, including the hourly offset amount of each instance from the resource plan and the remaining capacity before and after the offset.

   Note

   • For an instance whose fees have been offset by a resource plan, you can still view the pay-as-you-go bill records of the instance on the Bill Details page. However, the amount payable on the bill is 0 (that is, the fees have been offset by the resource plan).