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Dynamic Content Delivery Network:Guidelines for choosing resource plans

Last Updated:Dec 19, 2023

Alibaba Cloud DCDN provides resource plans that help you save costs. This topic describes how to choose and purchase resource plans.


We recommend that you choose resource plans based on the features and services that you want to use, business volume, and accelerated region. Choose resource plans

  • You can purchase resource plans on the buy page.

  • For more information about the pricing of resource plans, see DCDN pricing.

  • After you purchase an outbound data transfer plan, select the pay-by-data-transfer metering method. If the metering method is not pay-by-data-transfer, the plan does not take effect until you change the metering method to pay-by-data-transfer. You can switch between both metering methods as required. For more information, see Change the metering method.

  • We recommend that you use the purchased resource plan as soon as possible. No refunds are provided after a resource plan expires.



Alice wants to accelerate content delivery for a small-sized community website. The following information describes the basic information about her website:

  • Website type: small-sized community website. Website content: images, text, and on-demand videos.

  • Accelerated region: Chinese mainland.

  • Other services: Image and video files are stored in an Object Storage Service (OSS) bucket. HTTPS secure acceleration is used to encrypt data transmission.

  • Resources.


    Expected resource consumption

    Outbound data transfer

    • Daily peak bandwidth: about 1 Gbit/s

    • Outbound data transfer: 3.16 TB per day, 95 TB per month, 570 TB per six months, and 1,140 TB per year

    HTTPS requests for static content

    • Daily maximum number of queries per second (QPS): about 3,000

    • Number of requests: about 78 million per day, 2.33 billion per month, and 27.96 billion per year

    OSS outbound traffic

    The fees for OSS outbound traffic are directly related the cache hit ratios of DCDN. The higher the cache hit ratios, the lower the fees charged by OSS.

    For example, the byte hit ratio and request hit ratio of DCDN are both 90%. In this case, 10% of the network traffic and requests are redirected to the origin server, which is an OSS bucket. OSS charges fees for the data transfer generated during back-to-origin routing. For more information, see OSS Pricing.

Scenario breakdown

  1. Determine billable items based on required features and choose resource plan types

    Feature and billable item

    Resource plan

    Basic features: outbound data transfer

    Outbound data transfer plans

  2. Determine the quota required and subscription duration of the resource plans

    Select outbound data transfer plans for DCDN based on the expected amount of data transfer of your domain name and the quota options listed on the buy page, as described in the following table.

    Expected amount


    Subscription duration

    Benefit and drawback

    95 TB per month

    50 TB

    One month

    This solution consumes two data transfer plans every month, which requires frequent purchases.

    570 TB per six months

    200 TB

    Six months

    This solution consumes three data transfer plans every six months. However, this solution provides better savings.

    1,140 TB per year

    1 PB

    One year

    In this example, Alice runs a small-sized community website. The website may attract more visitors and experience fluctuations in outbound data transfer. Data transfer resources may be wasted if Alice purchases a one-year outbound data transfer plan.

  3. Recommended resource plans

    Outbound data transfer plan:

    • Commodity type: resource plan for Alibaba Cloud DCDN

    • Resource plan type: outbound data transfer plan

    • Capacity: 200 TB

    • Accelerated region: Chinese mainland

    • Subscription duration: six months