Fastly customers can use ESI to cache pages that contain both cacheable and uncacheable content (such as user-specific information).

Vary is one of the most powerful HTTP response headers. However, if used incorrectly, it can cause problems for developers. Understand vary header best practices to reduce mistakes and…

In this, our final API Caching installment, we're going to explore how to use Surrogate Keys to reduce the overall complexity of caching an API.

The web has come a long way since the 90s. In the past, sites were commonly driven by a single, monolithic application that acted as the only communication medium to a centralized database…

At Fastly, we’re constantly working to upgrade our network and expand global capacity. Last week, we built up capacity in our Ashburn, New York City, and Los Angeles POPs and brought a new…

Here at Fastly HQ, we want websites to be fast. Caching is commonly used to speed up websites. However, caching rapidly changing and unpredictably updated content can be difficult. To make…