The default cache configuration of a Content Delivery Network (CDN) typically includes settings for cache expiration, cache control headers, and rules for different types of content. For instance, static resources like images, CSS, and JavaScript files are often cached for longer periods, while dynamic content like HTML pages may have shorter or no cache times.
Specifically, the default cache configuration might set a default Time-To-Live (TTL) for cached content, which could be around 24 hours for static files. It might also include headers like Cache-Control to manage caching behavior, such as public for allowing caching by proxies and max-age to specify the maximum amount of time a resource can be cached.
For example, a default configuration could include:
Cache-Control header set to public, max-age=86400 for static files, which means they can be cached by any proxy and will be considered fresh for up to 24 hours (86400 seconds).Cache-Control setting for dynamic content, possibly no-cache or max-age=0, requiring revalidation with the origin server each time.In the context of cloud services, platforms like Tencent Cloud offer CDN services with customizable cache configurations. Users can set specific cache rules based on their content types and delivery needs, optimizing the performance and efficiency of their content delivery.