Tencent Cloud Content Delivery Network (CDN) is a new layer of network architecture added to the existing Internet comprised of Tencent Cloud high-performance cache nodes. These nodes store your business content according to a specified caching strategy, and when your end user makes a request for the content, the request is routed to the node closest to the user for fast response, effectively reducing user access latency and improving service availability.
Tencent Cloud boasts 1,100+ cache nodes across China deployed with China Mobile, China Unicom, China Telecom and more than a dozen small and medium-sized ISPs with a total of 100+ Tbps bandwidth, and 100+ nodes in over 50 countries and regions outside Mainland China, effectively solve issues with high cross-regional access latency.
CDN nodes deployed in each region with each ISP are monitored in real time by utilizing checkpoints throughout China to periodically access the monitoring files. Tencent Cloud's proprietary GSLB scheduling system, paired with network-wide real-time monitoring data, accurately routes user requests to the optimal access nodes.
CDN supports full-linkage HTTPS encrypted transfer. Further, you can apply for free certificates or purchase paid certificates in Tencent Cloud or upload your own certificates to CDN for deployment. HTTPS acceleration can ensure data security and prevent content hijacking.
CDN supports self-service configuration of access control policies through the console or API based on referer and client IP access control policies that can limit IP access frequency and bandwidth to effectively resist content hotlinking and CC attacks.
After adding a domain name, simply add the corresponding CNAME record at the domain name service provider to enable access, with no adjustments on the business side required. The console has more than a dozen self-service configuration items in the form of APIs for diversified management. Traffic, bandwidth, access counts and popular resources can be analyzed in real time to help you understand business fluctuations instantly.
CDN supports self-service configuration of access control policies, including blacklists/whitelists for referer, IP, UA (in trial) and IP access frequency limits, which help effectively resist hotlinking, malicious users and CC attacks.
The expiration policy of the origin server file cache can be customized based on actual business conditions to improve the cache hit rate and reduce origin-pull bandwidth consumption. Further, CDN supports multi-level cache route configuration, so the intermediate server can be activated as needed to converge origin-pull and relieve pressure on the source server.
The origin server can be configured with multiple IPs for polling and origin-pull or with other domain names as the origin server. Master-slave origin servers can be configured for disaster recovery and improved success rate of origin-pull. By default, CDN performs multipart origin-pull and does not follow 302 redirects and supports self-service adjustments based on origin server conditions.
Free certificates can be applied for and certificates from Symantec and GeoTrust can be purchased in Tencent Cloud. After successful application or purchase, the certificates can be deployed to CDN in one click for HTTPS access. Existing certificates can be uploaded to the cache node to support forced HTTPS redirects (301/302 modes available), forced HTTP origin-pull and protocol follows and HTTPS origin-pull.
Custom HTTP response/request headers can be added to meet cross-domain and other personalization requirements.
After a domain name is connected, CDN will dynamically schedule it to the optimal cache node based on the request conditions, causing the access IP to change frequently and affecting the weight of the domain name in search engines. After SEO is enabled, the access IP can be intelligently identified to ensure the stability of search engine weights.
Network-wide access logs can be downloaded to help analyze user behaviors.
Tencent's proprietary GSLB scheduling system precisely routes user requests to the optimal cache node with high-QPS clusters, allowing for fast response to massive volumes of requests made to static pages and images, reducing access latency and improving user experience.
Tencent's proprietary GSLB scheduling system precisely routes user requests to the optimal cache node, ensuring a fast and stable download experience by pushing the download resources to all nodes in advance.
CDN's powerful global acceleration capabilities help deliver video content on websites to all end users with speed, accuracy and reliability. Paired with Cloud Object Storage (COS) for storing massive amounts of image and video files, static CDN acceleration can effectively shorten content loading times and improve user experience.
CDN is postpaid based on the daily bandwidth or traffic, i.e. the total consumption generated between 00:00:00 and 23:59:59 on one day will be calculated and billed on the following day. You can choose the appropriate billing method according to your business needs.