This topic describes the release notes for Alibaba Cloud Dynamic Content Delivery Network (DCDN) and provides links to the relevant references.
2023
Feature | Description | Release date | References |
WAF IP address groups | Hundreds of IP addresses or CIDR blocks can be added to a group and then batch referenced in WAF rules, which improves configuration efficiency. By default, a maximum of 10 groups can be configured. Each group can contain a maximum of 5,000 IP addresses or CIDR blocks. | 2023-12 | |
Health status check for origin servers | Health check is available on the origin server configuration page. Intelligent algorithms and Layer 4 protocols are used to detect any possible unexpected behavior of origin servers and prompt you to handle the exception as soon as possible. | 2023-12 | |
Query of IPA-accelerated IP addresses | Querying whether an IP address is the IP address of a POP provided by DCDN IP Application Accelerator (IPA) is supported to help you troubleshoot Layer 4 acceleration issues. | 2023-11 | |
Waiting Room (beta) | Requests in traffic burst scenarios such as ticket grabbing can be added to a waiting room for queuing, which reduces the number of instantaneous back-to-origin requests and protects origin servers. This feature is a beta version. You must submit a ticket for a trial use. | 2023-10 | |
Commercial release of EdgeKV | Billing rules of EdgeKV are released. The billing is based on the storage size and the number of operations such as PUT, LIST, and DELETE. | 2023-10 | |
Support for non-standard ports in DDoS mitigation | An Anti-DDoS specification with best-effort protection that supports ports other than 80 and 443 is released. This specification can provide mitigation against Layer 7 attacks over up to 20 non-standard ports. | 2023-09 | |
Scenario-specific policies | Mitigation policies can be customized for major events. In the case of major events, the DDoS mitigation level can be reduced to prevent normal requests during traffic spikes from being blocked. This feature is often used for businesses that have already enabled DDoS mitigation but may have spiky workloads. | 2023-09 | |
Specified origin SNI | If multiple origin server addresses are configured for your domain name, the origin protocol is HTTPS, and the domain names that provide web services are different from each other, different Server Name Indication (SNI) values can be specified to redirect requests to different origin server addresses. This way, the origin servers return different SSL certificates to points of presence (POPs) based on the SNI value. This allows POPs to establish SSL connections with different origin server addresses. | 2023-09 | |
Configuration groups | Configurations in a configuration group can be modified, and a configuration group can be associated with one or more domain names. The configurations in a configuration group apply to the associated domain names. | 2023-06 | |
Resource refresh based on regular expressions | URLs that contain regular expressions can be submitted in a refresh task. DCDN refreshes resources from all URLs that match the regular expressions. This improves the efficiency of URL refresh. | 2023-05 | Configure URL refresh rules that contain regular expressions |
301/302 redirection | After 301/302 redirection is configured, the HTTP 301 or 302 status code that is returned by an origin server is processed by DCDN POPs instead of being returned to clients. This streamlines request processing and accelerates content delivery. | 2023-01 | |
Origin fetch over IPv6 | After origin fetch over IPv6 is configured, DCDN POPs can redirect requests to origin servers over IPv6 based on different back-to-origin policies. | 2023-01 | |
Online debugger for EdgeRoutine | Coding and debugging can be performed in the EdgeRoutine console, without requiring to modify the local hosts file. Online debugging greatly boosts development efficiency. | 2023-01 |
2022
Feature | Description | Release date | References |
Intelligent HTTP flood protection | Intelligent HTTP flood protection is added to DDoS mitigation. You can enable intelligent HTTP flood protection without complex configurations. | 2022-10 | |
Bot management | Bot management is added to Web Application Firewall (WAF) to block malicious crawlers. | 2022-09 | |
WAF security reports and real-time logs | Attacks blocked by WAF and block logs can be queried in real time. | 2022-07 | |
Intelligent Anti-DDoS features | Multiple Anti-DDoS specifications such as 10 Gbit/s, 100 Gbit/s, and best-offer protection for regions outside the Chinese mainland are added. | 2022-06 | |
WAF | WAF can be enabled on POPs close to clients to prevent crawling and injection attacks. This feature protects your services that are accelerated by DCDN. | 2022-05 | |
EdgeKV | Lightweight data can be stored on globally distributed POPs for EdgeRoutine to consume. The combination of EdgeKV and EdgeRoutine allows you to deploy lightweight applications to POPs and process client requests nearby. | 2022-03 | |
Health check URL for DDoS mitigation | The health check URL is added. Anti-DDoS accesses the specified URL at regular intervals to check whether the origin server can be accessed and then sends the result to DCDN. DCDN switches the traffic to Anti-DDoS only if the URL passes the health check and the threshold value of queries per second (QPS) is reached. | 2022-01 |
2021
Feature | Description | Release date | References |
TCP multiplexing | TCP multiplexing for IPA is supported If the average size of a response is less than 5 KB, you can enable TCP multiplexing for IPA to improve network performance. | 2021-12 | |
SM algorithms | SM algorithms are supported to provide more secure transmission over HTTPS. | ||
CNAME configuration wizard | The CNAME configuration wizard is added. If the CNAME Status parameter on the Domain Names page is Pending configuration, the CNAME Configuration Guide tooltip appears when you move the pointer over the CNAME Status column. You can follow the steps provided in the CNAME Configuration Guide panel to add the CNAME record for your domain name. | ||
Operations report |
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Real-time logs | The real-time log feature is supported. This feature allows you to collect logs that are generated by POPs in real time and deliver the collected logs to Simple Log Service for storage and consumption. This helps you monitor your business and identify service issues in an efficient manner. | 2021-11 | |
Console layout | A new console layout is provided to help you manage and quickly access feature modules. | 2021-10 | / |
EdgeScript | EdgeScript (ES) is supported. This feature allows you to customize DCDN configurations by running scripts if the standard configurations in the DCDN console cannot meet your business requirements. | 2021-09 | |
Region blacklist | The region blacklist feature is added. This feature allows you to block malicious requests that are frequently initiated from specific regions. | ||
Rate limiting | The rate limiting feature is used to block malicious requests and improve the security of your website. This feature helps you protect your website from HTTP flood attacks. | ||
IP address check | The IP address check feature is supported. This feature allows you to query whether an IP address belongs to a DCDN POP, and to query the region and the Internet service provider (ISP) to which an IP address belongs. | 2021-08 | |
DDoS mitigation | Alibaba Cloud DCDN POPs are integrated with Anti-DDoS to scrub network traffic. This way, DCDN can protect your website and accelerate content delivery. | 2021-07 | |
EdgeRoutine | EdgeRoutine is supported. EdgeRoutine is a computing environment that allows you to deploy JavaScript code on all DCDN POPs at a time. | 2021-06 | |
Load balancing | Requests are redirected to origin servers based on the performance of origin servers. If you want requests to be redirected based on the weights of origin servers, enable load balancing. This way, requests are redirected to origin servers based on the specified weights. | 2021-05 | |
Origin server weights | Origin server weights are supported. If you specify multiple origin servers, you can configure the weight of each origin server. Requests are redirected to the origin servers based on weighted round robin scheduling. | 2021-04 | |
Retain Specified Parameters | Retain Specified Parameters is added to the parameter filtering feature. You can enable Retain Parameters in Back-to-origin Parameters to manage origin parameters in a precise manner. | 2021-03 | |
Optimization of CSS and JavaScript code for web pages | Redundant content such as comments and additional whitespace characters in HTML pages and CSS or JavaScript code can be removed. This helps reduce file sizes and accelerate content delivery. | ||
Operations reports | The tracking task feature is added to allow you to obtain daily, weekly, or monthly reports. You can create custom tracking tasks for domain names for daily analysis based on your business requirements. This way, you can check the status of your business, simplify data processing, and improve service efficiency. | 2021-02 | |
DCDN WAF | DCDN is integrated with WAF to identify and filter out malicious requests. Only trusted requests can be redirected to origin servers. WAF can protect web servers against intrusions, secure important business data, and prevent server anomalies caused by attacks. | 2021-01 | |
Tag management | Tag management is supported. You can use tags to mark and group domain names. This way, you can search for and manage domain names by tag. |
2020
Feature | Description | Release date | References |
OCSP Stapling | Online Certificate Status Protocol (OCSP) stapling is supported. OCSP stapling allows DCDN to obtain OCSP information. This reduces the latency when clients send requests to validate digital certificates, and reduces the period of time that is required to receive the validation responses. | 2020-12 | |
Brotli compression | Brotli compression is added. After Brotli compression is enabled, DCDN POPs can compress text files in formats such as HTML, JavaScript, and CSS when the POPs return the requested resources. The performance of Brotli compression is approximately 15% to 25% higher than Gzip compression when you compress text files. | 2020-12 | |
Image editing | Image editing is supported. You can resize, crop, sharpen, and rotate images, and convert image formats on DCDN POPs. | 2020-11 | |
SSL certificate management | SSL certificate management is supported. You can update and query multiple SSL certificates at a time. You can also manage the mappings between SSL certificates and domain names, expiration time, and certificate sources. | 2020-09 | |
IPv6 | IPv6 can be enabled in the DCDN console. You can enable dual-stack access for domain names over the IPv4 and IPv6 protocols. An IPv6 client can access DCDN over the IPv6 protocol. | 2020-06 |
2018
Feature | Description | Release date | References |
Real-time monitoring | Performance metrics are supported. You can select important performance metrics to view monitoring charts and configure alerts. | 2018-10 | |
Websocket | WebSocket is supported. WebSocket is a new TCP-based network protocol that allows the server to send data to the client. | ||
New acceleration region | The Global acceleration region can be selected when you add a domain name. | 2018-09 | |
Official release on the International site | DCDN is launched on the International site of Alibaba Cloud. | 2018-08 | |
Sequential processing of back-to-origin requests | Sequential processing of back-to-origin requests is supported. You can use DCDN to retrieve resources from multiple origin servers based on the preset priorities to ensure the smooth transition across origin servers. | 2018-07 | None |
Official release | Alibaba Cloud DCDN is available for commercial use. | 2018-04 |
2017
Feature | Description | Release date | References |
Public preview | Alibaba Cloud DCDN is in public preview. | 2017-12 | None |