Much of the content served on websites and mobile apps is neither static nor fully dynamic. News headlines, stock prices, weather, and inventory remain static for some period of time and then change unpredictably. Traditional CDNs call this dynamic content and treat it as uncacheable, since they lack the ability to instantly purge stale content.
We consider this type of content “event-driven,” and we can cache it because it can be purged instantly. Our Instant Purge feature allows you to cache and invalidate content almost as soon as it’s updated on your origin server — within 150 milliseconds on average across our global network.