Fastly’s edge cloud platform enhances web and mobile delivery by accelerating dynamic assets and caching unpredictably changing content.
Fastly’s world-class Dynamic Site Acceleration (DSA) speeds up requests and responses between cache nodes in our points of presence (POPs) and your origin server, so your web and mobile content is served faster. We keep connections between cache nodes and your origin open (or “hot”) so traffic can flow without incurring latency penalties for constantly setting up new connections. Our advanced algorithms route traffic along the optimal path between our POPs and your origin.
As your content catalogue expires or gets invalidated, all subsequent requests need to go back to origin to retrieve the latest version. This can significantly impact performance while adding to the computing resources needed to support these requests.
Fastly’s powerful Origin Shield feature addresses this challenge by designating a specific POP to serve as a “shield” for your origin servers. Using request collapsing, all cache miss requests are consolidated into a single request and held in queue while we fetch the new content. Once the Origin Shield has a copy of the content, it serves any additional requests.