DCDN

A content delivery acceleration service, which has been designed based on Alibaba Cloud CDN to accelerate content delivery for hybrid sites, dynamic sites, and applications.

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Dynamic Content Delivery Network (DCDN) is a high-performance, reliable, and secure whole site acceleration solution. This service aims to accelerate access to hybrid sites that use both dynamic and static resources. DCDN integrates with multiple products and services, such as dynamic acceleration systems, intelligent static content caching, HTTPS, and operations security. You can use DCDN to provide high-speed access to the whole site, and ensure the stability of the site.

Benefits

Fast access
Easy acceleration for the entire site without the need to accelerate static and dynamic content separately.
Global acceleration
Provides more than 1,300 nodes covering six continents and redirects user requests to the nearest node for high-performance data transmission through real-time optimal routing and protocol stack optimization.
Service reliability
Maximum bandwidth of 90 TB/s for content delivery with 7/24 service support to reduce costs of operations.
Content Security
Full link transmission encryption over HTTPS and integration with multiple types of access control technology, to guarantee the security of content delivery.

Features

Transmission acceleration

Full site acceleration, static and dynamic content separation, intelligent routing, protocol stack optimization, data compression and merging, and error code page customization.

Access to the nearest node

Global load balancing for dispatching user requests to the nearest node.

Static and dynamic content separation

Custom rules for accelerating static and dynamic content separately.

Static content caching

Intelligent static content caching on edge servers. Hierarchical and distributed caching to reduce origin fetches.

Intelligent routing

Real-time link quality detection and origin fetches through the optimal link.

Protocol stack optimization

Transport layer and application layer protocol stack optimization for fast and stable data transmission.

Data compression

Data compression before transmission.

High stability

Full site load balancing with multiple origin fetch policies, origin site health monitoring, and error code page customization.

Multiple origin site types

Support for multiple types of origin sites, including public IP addresses, Object Storage Service (OSS), and custom domain names.

Multiple-origin load balancing

Support for origin site weight setting, origin site priority setting, and primary and backup site setting.

Origin site health monitoring

Explicit health monitoring mechanism for promptly detecting and preventing access failures.

WaitingRoom mode

Traffic throttling and queuing policies to guarantee the stability of services on origin sites, when the sites experience burst traffic that is caused by sales promotion or ticket purchasing.

Auto-reconnect on failover

Dynamic content acceleration with session persistence and re-connection on failover, to ensure high-performance origin fetches and information synchronization.  

Response page customization

Response page customization for error codes such as 403, 404, 503, and 504.

Basic protection

Includes anti-leech, hijacking and tampering prevention, and access control.

Anti-leech basic

Includes referer and IP address whitelists, and blacklists to prevent leeches.

Anti-leech pro

Includes URL encryption and authentication.

Hijacking and tampering prevention

Includes HTTP DNS hijacking prevention, HTTPS encryption and authentication, and URL encryption and authentication.

Access Control

Includes IP address blacklists, region blacklists, and user agent (UA) blacklists.

HTTPS Acceleration

Supports certificate-based authentication on clients, free certificates, SSL optimization such as HTTP/2 and SNI, and acceleration schemas without private keys.

HTTP/2

Full link transmission over HTTP/2. Supports header compression, request priority setting, link multiplexing, and server push.

Shared IP addresses based on SNI

Access optimization, without restrictions to IP bindings.

Session resumption

Session resumption to reduce the SSL and TLS session negotiation time.

HSTS

Force HTTPS in web browsers to enhance access security.

HTTP and HTTPS redirecting

Redirection of HTTP requests to an HTTPS origin site or redirection of HTTPS requests to an HTTP origin site.

Certificate-based authentication on clients

Certificates provided by the clients are used in mutual authentication to authenticate the server.

Free certificates

Supports free DV and SSL certificates from Symantec, which is a leading SSL and TLS certificate provider.

Flexible management and control

Domain name configuration, billing management, and resource monitoring in the console are used to implement flexible management and control.

Resource Monitoring

Monitoring and displaying of the network traffic trends on dashboards.

Domain name management

Simple configuration of domain name-based origin sites, static and dynamic content acceleration rules, and access control.

URL refresh and content push

Uses URL refresh to ensure access to the latest content, and the content push function to cache the content updates on nodes to prevent a burst of origin fetch traffic.

Logs

User access log downloading to help website data analysis.

Billing Management

Simple modification of billing methods and purchasing of data transfer plans.

Scenarios

  • Social communications
E-business platforms

E-business platforms

Product presentation, online payment, and sales promotion.

E-business customers use hybrid sites with rich content. These sites provide services such as user registration, logon, product search, product preview, and online payment. Therefore, the performance of these sites has become an essential metric to evaluate the user experience.

Benefits

  • Low content loading latency

    Content loading acceleration for cross-ISP and multi-client access to origin sites.

  • Access stability

    Intelligent dispatching network for seamlessly resolving stability issues.

  • Sales promotion guarantee

    Multiple origin fetch policies, which support origin fetch queuing to offload the traffic on origin sites.

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Social communications

Social communications

Rich site content with frequent and dynamic updates.

Home pages that are used to access forums, interactive live streams, and news all require fast responses. Interactions on these pages also impose high demands on the access speed and effect the stability of the website.  Any burst traffic may cause website congestion.

Benefits

  • Dynamic acceleration

    Content loading acceleration for cross-ISP and multi-client access to origin sites.

  • Flexible dispatching

    Domain name-based real-time full data monitoring and service-based intelligent dispatching.

  • Hotspot protection

    Traffic throttling and queuing policies for hotspot protection in the event of burst traffic.

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