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.
You can set an access limit and create blacklists/whitelists for referer, IP, and UA (in beta) to block specific requests. A wide selection of timestamp-based hotlink protection rules is available to prevent unauthorized use of your resources and avoid potential losses.
You can set the cache expiration time of your contents on different CDN nodes according to file type, directory, and path to effectively improve the node hit rate and reduce the origin-pull bandwidth consumption.
Comprehensive real-time monitoring is available for counting statistics of traffic, bandwidth, requests, hit rate, origin-pull failure rate, and specific status codes at the minute level, helping you understand the CDN service status and monitor origin servers instantly. Alarm policies can be configured as needed in the Cloud Monitor Console, enabling you to stay up to date with business fluctuations.
After the contents are updated on or deleted from the origin server, URL/directory purge tasks can be submitted in the console or through open APIs to delete the cached resources across the entire network and ensure that users access the latest resources. URL prefetch tasks can also be submitted for the cache nodes to actively pull the specified resources from the origin server and cache them for improved access speed.
Access logs for all domain names in the past 30 days are provided by default. There are a total of 15 fields, including request time, client IP, domain name, access path, number of bytes, client district, client ISP, status code, referer, response time, user-agent, range, HTTP method, protocol identification, and cache hit/miss. Logs can be conveniently downloaded for business analysis.
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. View more.