This topic describes the release notes for Alibaba Cloud CDN and provides links to the relevant references.

2022

Feature Description Release date Supported region References
Tag management The tag management feature is improved. It supports interactive operations and provides better user experience. 2022-02 All What is a tag?
Quick UDP Internet Connections (QUIC) The QUIC protocol is supported. If QUIC is enabled, data can be transmitted between clients and CDN edge nodes over QUIC. QUIC secures data transmission and improves transmission efficiency. 2022-01 All What is the QUIC protocol?

2021

Feature Description Release date Supported region References
Statistical analytics The statistical analytics feature is discontinued. You can use the operations reports feature to analyze data. 2021-11 All Customize an operations report template and create a tracking task
Domain name management Advanced search conditions are supported. You can search for domain names by origin server and accelerated domain name. If you search for domain names by accelerated domain, fuzzy match, exact match, prefix match, and suffix match are supported. /
Content moderation for images Content moderation for images is discontinued. 2021-10 All /
Operations reports Operations reports are supported. Operations reports provide offline analysis data of accelerated domain names in different time periods. Operations reports help you gain data insights from workload status. 2021-09 All Customize an operations report template and create a tracking task
Free SSL certificates Application for free SSL certificates by using the Alibaba Cloud CDN console will be phased out. We recommend that you use SSL Certificates Service to apply for SSL certificates. 2021-08 All Changes to free SSL certificates
Cross-origin resource sharing (CORS) CORS is supported. You can add custom HTTP response headers to enable CORS. 2021-07 All Configure CORS
Custom cache keys Custom cache keys are supported. You can set a cache key for a type of request that is destined for the same resource file. This can help you save the cache space and reduce the number of requests redirected to the origin server. All Custom cache keys
302 redirection 302 redirection is supported. After you configure 302 redirection on your origin server, edge nodes process the HTTP 302 status code that is returned by your origin server. This simplifies the processing pipeline and accelerates content delivery. All Configure 302 redirection
Configuration guide for adding domain names Configuration guide for adding and configuring domain names to be accelerated is supported. All Getting started
Log storage Log storage is supported. After the log storage feature is enabled, Alibaba Cloud CDN automatically stores logs in a specified Object Storage Service (OSS) bucket to persist log data. You can also use Data Lake Analytics (DLA) to analyze the log data. 2021-06 All Use DLA to process and persist log data to OSS
Origin server weights Origin server weights are supported. You can specify the weight of each origin server if multiple origin servers are specified. Requests are redirected to the origin servers based on weighted round robin scheduling. 2021-04 All Add a domain name
EdgeScript (ES) templates and script monitoring ES templates are supported in the Alibaba Cloud CDN console. You can use the templates to deploy code for different scenarios after simple modifications. ES templates improve programming efficiency.

Script monitoring is supported. You can monitor the status of each script and query the error codes that may appear during script execution.

2021-03 All EdgeScript monitoring
Remote authentication Remote authentication is supported to reinforce access control. The authentication process includes the user who sends the request, CDN edge nodes, and authentication server. You can create custom authentication rules in the Alibaba Cloud CDN console. All Configure remote authentication
Pay-by-peak-bandwidth The pay-by-peak-bandwidth metering method is supported. Beginning January 8, 2021, Alibaba Cloud CDN uses the pay-by-data-transfer metering method by default. If you want to switch to the pay-by-peak-bandwidth metering method, submit ticket or contact your sales manager. 2021-01 All Purchase guide

2020

Feature Description Release date Supported region References
Integration with Anti-DDoS Alibaba Cloud CDN edge nodes are integrated with Anti-DDoS services to scrub network traffic. This way, Alibaba Cloud CDN can accelerate content delivery while mitigating malicious requests. 2020-06 All Configure Anti-DDoS
Image editing Image editing is supported. It allows you to resize, crop, sharpen, and rotate images and convert image formats on CDN edge nodes. 2020-06 All Overview
Management of custom response headers The custom response header feature is optimized. You can delete, change, and replace custom response headers. 2020-05 All Create a custom HTTP response header
Parameter rewrite Parameter rewrite is supported. If you want to modify URL parameters in requests before they are redirected to origin servers, you can create rules to rewrite the parameters. 2020-04 All Rewrite URL parameters in back-to-origin requests
URI rewrite URI rewrite is supported. If you want to rewrite URIs in requests before they are redirected to origin servers, you can create rules to rewrite URIs. 2020-04 All Rewrite URIs in back-to-origin requests
Custom HTTP response headers Custom HTTP response headers are supported. If you want to rewrite HTTP headers in response URLs before they are returned to CDN edge nodes, you can create rewrite rules in the Alibaba Cloud CDN console. 2020-04 All Rewrite HTTP response headers
Custom HTTP request headers Custom HTTP request headers are supported. If you want to rewrite HTTP headers in request URLs before they are redirected to origin servers, you can create rewrite rules in the Alibaba Cloud CDN console. 2020-04 All Rewrite HTTP headers in back-to-origin requests (upgraded feature)
Rate limiting Rate limiting is supported. When the response time of your website is increased due to HTTP flood attacks, the rate limiting feature can block specific requests that are sent to your website within seconds and improve the security of your website. 2020-04 All Configure rate limiting

2019

Feature Description Release date Supported region References
IPv6 IPv6 is supported. After IPv6 is enabled, IPv6 clients can access Alibaba Cloud CDN over IPv6. Alibaba Cloud CDN also carries the IPv6 information when Alibaba Cloud CDN accesses your origin server. 2019-10 All Configure IPv6
Audio and video preview Audio and video preview is supported. It allows an edge node to return audio or video files of a specific length to clients. All Audio and video preview
Audio extraction Audio extraction is supported. After it is enabled, edge nodes extract audio data from a video file and then return only the audio data to clients. This reduces data usage. 2019-09 All Audio extraction
Rewrite URI rewrite is supported. This feature allows you to configure URI rewrite rules in the Alibaba Cloud CDN console to customize request processing. 2019-07 All Create a URI rewrite rule
Brotli compression Brotli compression is supported. Brotli is a new open source compression algorithm. It improves download performance by about 15% to 25% compared with Gzip compression. 2019-05 All Configure Brotli compression
User-Agent blacklists and whitelists User-Agent blacklists and whitelists are supported. This feature enables Alibaba Cloud CDN to control access based on the User-Agent request header. You can configure a User-Agent blacklist or whitelist to control access to your resources and block malicious requests. All Configure a User-Agent blacklist or whitelist
Switch between accelerated regions Switch between accelerated regions is supported. You can change the accelerated region for an accelerated domain name in the Alibaba Cloud CDN console. 2019-04 All Change the accelerated region
Upgraded certificate center The certificate center of Alibaba Cloud CDN is upgraded. It allows you to configure certificates for one or more accelerated domain names at a time. 2019-03 All Configure an SSL certificate for multiple domain names
Server Name Indication (SNI) SNI is supported. SNI specifies the name of the domain name that is requested, and enables the origin server to return the correct certificate for the specified domain name. All Configure SNI

2018

Feature Description Release date Supported region References
TLS version and HSTS management
  • TLS and HSTS version management is supported. HSTS is used to force clients such as browsers to use HTTPS to establish connections to the server.
  • After a TLS protocol version is enabled, TLS handshakes are enabled for specified accelerated domain names.
2018-11 All
Latest Alibaba Cloud CDN API The previous API version will no longer be maintained. We recommend that you use the latest API version. 2018-09 All Overview of the latest API
Upgraded Alibaba Cloud CDN console The Alibaba Cloud CDN console is upgraded to a later version. This version supports basic operations such as domain name configuration and provides resource monitoring services for real-time data analytics. You can also learn about your billing information and change the billing method based on your business requirements. 2018-07 All Features

2017

Feature Description Release date Supported region References
Dynamic Route for CDN (DCDN)

DCDN is supported. DCDN is built based on Alibaba Cloud CDN and can accelerate the delivery of dynamic content, or both dynamic and static content from applications and sites.

2017-08 All What is DCDN?

2016

Feature Description Release date Supported region References
Subscription data transfer plans Subscription data transfer plans are supported by Alibaba Cloud CDN. A data transfer plan takes effect immediately after the payment is completed. The amount of data transfer that exceeds the quota of the plan is billed on a pay-as-you-go basis. 2016-02 All CDN data transfer plans

2015

Feature Description Release date Supported region References
Cache rules and priorities Cache rules and priorities are supported. You can configure cache rules for resources of a specific file type or under a specific directory. For each cache rule, you can specify a time-to-live (TTL) value for the cached resources and set the priority of each rule. 2015-10 All Add a cache rule
Custom HTTP response headers Ten types of HTTP response header are supported by Alibaba Cloud CDN. 2015-08 All Create a custom HTTP response header

2014

Feature Description Release date Supported region References
Official release of Alibaba Cloud CDN Alibaba Cloud CDN is officially released. It is a distributed virtual network that consists of edge nodes deployed in different regions across the world. Alibaba Cloud CDN reduces network traffic on origin servers to prevent network congestion. You can use Alibaba Cloud CDN to accelerate content delivery in different regions and scenarios. 2014-03 All What is Alibaba Cloud CDN?