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CDN:Release notes

Last Updated:Dec 19, 2023

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

2023

Feature

Description

Release date

Region

References

Traffic throttling for individual requests

Traffic throttling for individual requests allows you to limit the downstream speed for all requests that are sent to points of presence (POPs). This way, you can limit the overall peak bandwidth of accelerated domain names. This feature is suitable for scenarios such as game releases and software downloads.

2023-11

All regions

Configure traffic throttling for individual requests

Self-service diagnostics tool

If you encounter issues such as page loading failures or page errors when you use Alibaba Cloud CDN, you can use the self-service diagnostics tool to diagnose the issues. The diagnostics tool provides diagnosis results. You can modify configurations of Alibaba Cloud CDN or submit a ticket based on the results.

2023-10

All regions

Self-service diagnostics tool

Cache sharing

Cache sharing is added to allow accelerated domain names (one-to-one or one-to-many) in the same Alibaba Cloud account to share resources that are cached on POPs. Cache sharing increases the resource hit ratio of the domain names, improves the acceleration performance of Alibaba Cloud CDN, and reduces origin traffic.

2023-09

All regions

Configure cache sharing

  • Referer-based hotlink protection

  • URL signing

  • IP address blacklist and whitelist

  • User-Agent blacklist or whitelist

  • Ignore parameters

  • Range origin fetch

  • Parameter rewrite

Existing features can be used with the rules engine feature to filter user requests based on specified rules. This way, you can configure custom policies in a more efficient manner. For more information, see Rules engine.

2023-08

All regions

  • TTL

  • Custom HTTP response headers

  • Access URL rewrite

  • Origin HTTP request headers

  • Origin HTTP response headers

Existing features can be used with the rules engine feature to filter user requests based on specified rules. This way, you can configure custom policies in a more efficient manner. For more information, see Rules engine.

2023-07

All regions

Upgrade from Alibaba Cloud CDN to DCDN for a domain name

Upgrade from Alibaba Cloud CDN to Dynamic Content Delivery Network (DCDN) is supported. DCDN provides application acceleration, edge computing, and security protection capabilities. If you want to upgrade from Alibaba Cloud CDN to DCDN for your domain name, you can perform the upgrade by using the domain name upgrade tool in the Alibaba Cloud CDN console.

2023-05

All regions

Upgrade from Alibaba Cloud CDN to DCDN for your domain name

Conditional origin

The conditional origin feature can be used with the rules engine feature to filter user requests based on the specified rules, such as request header, query string parameter, path, and client ip. Then, requests that meet the rules are redirected to the specified origin server. For more information, see Rules engine. You can add multiple rules so that requests can be redirected to different origin servers based on the rules.

2023-02

All regions

Configure a conditional origin

Rules engine

The rules engine feature is supported. You can use the graphical user interface that is provided by the rules engine to configure rules. You can configure rules to identify user requests based on the parameters they carry. This helps determine whether a configuration applies to the requests, and provides a more flexible and accurate method to manage the configurations and policies that you set in Alibaba Cloud CDN.

For the first time ever, this feature is available to the public. Rules can be referenced by the conditional origin feature. For more information, see Configure a conditional origin.

2023-02

All regions

Rules engine

Domain name transfer across accounts

A domain name transfer tool can be used to transfer accelerated domain names across accounts.

2023-01

All regions

Transfer a domain name to another Alibaba Cloud account

Specified origin host

Different origin hosts can be specified for different origin servers if your accelerated domain name has multiple origin servers. POPs use the specified origin host to access the origin server. This feature has a higher priority over the default origin host.

2023-01

All regions

Specify the origin host for each origin

Alibaba Cloud OSS private bucket access

Access to private OSS buckets in the same Alibaba Cloud account or a different Alibaba Cloud account is supported.

2023-01

All regions

Grant Alibaba Cloud CDN access permissions on private OSS buckets

2022

Feature

Description

Release date

Region

References

Origin fetch over IPv6

After you configure Origin fetch over IPv6, requests can be forwarded to origin servers over IPv6 based on different back-to-origin policies.

2022-11

All regions

Configure origin fetch over IPv6

Web Frontend Performance

Web Frontend Performance is a feature launched by Alibaba Cloud CDN and Application Real-time Monitoring Service (ARMS). By introducing monitoring code to web pages, Web Frontend Performance monitors user access data. This helps you monitor your website performance, such as page loading, page stability (JS errors), and success rate of calls to external services.

2022-09

All regions

Web Frontend Performance

Common Name whitelist

The Common Name whitelist feature is supported. After you enable the Common Name whitelist feature, the certificate Common Name returned by the origin server and the SNI value included in an HTTPS request are verified when a POP establishes a connection with the origin server over HTTPS.

2022-07

All regions

Common Name whitelist

Status code expiration (origin cache policy prioritized)

A cache rule for HTTP status codes can be configured in the Alibaba Cloud CDN console. For more information, see Create a cache rule for HTTP status codes. When the client requests the same resource again, the POP returns a status code without triggering origin fetch. This reduces loads on origin servers.

If you want to follow the status code expiration rule configured on the origin server, you can use this feature.

2022-07

All regions

Create a status code expiration rule that honors origin

Refresh resources based on regular expressions

A URL that contains a regular expression can be submitted in a refresh task. Alibaba Cloud CDN refreshes all URLs that match the regular expression. This feature enables targeted refresh.

2022-07

All regions

Configure URLs that contain regular expressions

Upgraded console

Additional features are added to the Overview page, left-side navigation pane, and Resource Plans page in the Alibaba Cloud CDN console. Console layouts are optimized. This improves user experience.

2022-06

All regions

None

Integration with Terraform

Terraform is integrated with Alibaba Cloud CDN. Terraform is an open source tool that supports automatic resource orchestration. Terraform allows you to preview, configure, and manage basic cloud infrastructure and resources in an efficient and secure manner.

2022-05

All regions

Use Terraform to add and configure a domain name

Application center

Tools and value-added services, such as IP query, are provided in the application center of Alibaba Cloud CDN. This allows you to easily find and use services in the application center.

2022-03

All regions

Application center

Tag management

The tag management feature is improved to support interactive operations and enhance user experience.

2022-02

All regions

What is a tag?

QUIC

The Quick UDP Internet Connections (QUIC) protocol is supported. If QUIC is enabled, data can be transmitted between clients and POPs over QUIC. QUIC secures data transmission and improves transmission efficiency.

2022-01

All regions

What is the QUIC protocol?

2021

Feature

Description

Release date

Region

References

Statistical analytics

The statistical analytics feature is discontinued. The operations report feature can be used to analyze data.

2021-11

All regions

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 name, fuzzy match, exact match, prefix match, and suffix match are supported.

/

Content moderation for images

Content moderation for images is discontinued.

2021-10

All regions

/

Operations report

The operations report feature is supported. The operations report feature provides offline analysis data of accelerated domain names in different periods of time and help you gain data insights from the workload status.

2021-09

All regions

Customize an operations report template and create a tracking task

Free SSL certificates

Application for free SSL certificates in the Alibaba Cloud CDN console is disabled. We recommend that you use Certificate Management Service to apply for SSL certificates.

2021-08

All regions

Changes to free SSL certificates

CORS

Cross-origin resource sharing (CORS) is supported. You can add custom HTTP response headers to enable CORS.

2021-07

All regions

Configure CORS

Custom cache keys

Custom cache keys are supported. You can configure a cache key for requests that are destined for the same resource file. This helps save cache space and reduce the number of requests that are redirected to the origin server.

All regions

Create custom cache keys

302 redirection

302 redirection is supported. After you configure 302 redirection on your origin server, POPs process the HTTP 302 status code that is returned by your origin server. This simplifies the processing pipeline and accelerates content delivery.

All regions

Configure 301/302 redirection

Configuration guide for adding domain names

A configuration guide for adding and configuring domain names that you want to accelerate is supported.

All regions

For beginners

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 for viewing and analysis.

2021-06

All regions

Use Function Compute to deliver logs

Origin server weights

Origin servers can be assigned weights. Requests are redirected to the origin servers based on weighted round-robin scheduling.

2021-04

All regions

Add a domain name

ES templates and script monitoring

EdgeScript (ES) templates are supported in the Alibaba Cloud CDN console. You can use the templates to deploy code for different scenarios without the need to make complex 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 regions

ES monitoring

Remote authentication

Remote authentication is supported to reinforce access control. The authentication process involves the user who sends the request, POPs, and the authentication server. You can create custom authentication rules in the Alibaba Cloud CDN console.

All regions

Configure remote authentication

Pay-by-peak-bandwidth

The pay-by-peak-bandwidth metering method is supported. Since 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, contact your account manager or contact us by other means. For more information, see Contact us.

2021-01

All regions

Billing rules of basic services

2020

Feature

Description

Release date

Region

References

Integration with Anti-DDoS

Alibaba Cloud CDN POPs are integrated with Anti-DDoS services to scrub network traffic. This way, Alibaba Cloud CDN can accelerate content delivery and mitigate malicious requests.

2020-06

All regions

Integrate Alibaba Cloud CDN with Anti-DDoS

Image editing

Image editing is supported. You can resize, crop, sharpen, and rotate images and convert image formats on POPs.

2020-06

All regions

Image editing overview

Management of custom HTTP response headers

The custom response header feature is optimized. You can delete, change, and replace custom response headers.

2020-05

All regions

Configure an HTTP response header

Rewrite of external links to resolve IPv6 performance issues

External links can be rewritten to resolve the following issues in IPv6 deployment: slow responses, content loading errors, and redirection errors. The preceding challenges are known performance issues of IPv6. If the sites that are linked to your website do not support IPv6, you cannot resolve these issues by applying the dual-stack technology or upgrading your network or applications. Alibaba Cloud CDN provides a solution by rewriting the external links on POPs and accelerating content delivery over IPv6.

2020-05

All regions

What is EdgeRoutine?

Parameter rewrite

Parameters can be rewritten. 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 regions

Parameter rewrite

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 regions

Rewrite origin URLs

Origin HTTP response headers

Custom HTTP response headers are supported. If you want to rewrite HTTP headers in response URLs before they are returned to POPs, you can create rewrite rules in the Alibaba Cloud CDN console.

2020-04

All regions

Configure HTTP response headers

Origin 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 regions

Configure HTTP request headers

Rate limiting

The rate limiting feature 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 regions

Configure rate limiting

EdgeRoutine (ER)

EdgeRoutine (ER) is supported. ER is a computing environment that allows you to deploy JavaScript code on all POPs at the same time.

2020-03

All regions

What is EdgeRoutine?

2019

Feature

Description

Release date

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 it accesses your origin server.

2019-10

All regions

Configure IPv6

Audio and video preview

Audio and video preview is supported. A POP can return specific lengths of audio or video files to clients.

All regions

Audio and video preview

Audio extraction

Audio extraction is supported. After audio extraction is enabled, POPs extract audio data from a video file and then return the audio data to clients. This reduces data usage.

2019-09

All regions

Audio extraction

EdgeScript

EdgeScript is released. This feature allows you to specify custom Alibaba Cloud CDN and DCDN configurations by running scripts if the built-in configurations provided by Alibaba Cloud CDN or DCDN cannot meet your business requirements.

2019-07

All regions

EdgeScript overview

Rewrite

The URI rewrite feature is supported. This feature allows you to configure URI rewrite rules in the Alibaba Cloud CDN console to customize request processing.

2019-07

All regions

Create an access URL rewrite rule

Brotli compression

Brotli compression is supported. Brotli is a new open source compression algorithm that can improve download performance by approximately 15% to 25% compared with Gzip compression.

2019-05

All regions

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 regions

Configure a User-Agent blacklist or whitelist

Change the acceleration region

Switching between accelerated regions is supported. You can change the acceleration region for an accelerated domain name in the Alibaba Cloud CDN console.

2019-04

All regions

Change the acceleration region

Upgraded certificate center

The certificate center of Alibaba Cloud CDN is upgraded. You can configure SSL certificates for one or more accelerated domain names at the same time.

2019-03

All regions

Configure an SSL certificate for multiple domain names

SNI

Server Name Indication (SNI) is supported. SNI specifies the name of the requested domain name and enables the origin server to return the correct certificate for the specified domain name.

All regions

Configure SNI

2018

Feature

Description

Release date

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 regions

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 regions

Introduction to the API

Upgraded Alibaba Cloud CDN console

The Alibaba Cloud CDN console is upgraded to a later version. The new version supports basic operations, such as domain name configuration, and provides resource monitoring services for real-time data analytics. You can also view your billing information and change the billing method in the upgraded Alibaba Cloud CDN console.

2018-07

All regions

Features

2017

Feature

Description

Release date

Region

References

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 origin servers.

2017-08

All regions

What is DCDN?

2016

Feature

Description

Release date

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 complete. The amount of data transfer that exceeds the quota of the plan is billed based on the pay-as-you-go billing method.

2016-02

All regions

Alibaba Cloud CDN data transfer plans

2015

Feature

Description

Release date

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 directory. You can specify a time-to-live (TTL) value for cached resources and specify the priority of each cache rule.

2015-10

All regions

Create a cache rule for resources

Custom HTTP response headers

Ten types of HTTP response headers are supported by Alibaba Cloud CDN.

2015-08

All regions

Configure an HTTP response header

2014

Feature

Description

Release date

Region

References

Official release of Alibaba Cloud CDN

Alibaba Cloud CDN is officially released. Alibaba Cloud CDN is a distributed virtual network that consists of POPs that are 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 regions

What is Alibaba Cloud CDN?